JP3644291B2

JP3644291B2 - Vibration test monitoring system

Info

Publication number: JP3644291B2
Application number: JP05662099A
Authority: JP
Inventors: 満由美福山
Original assignee: Hitachi Ltd
Current assignee: Hitachi Ltd
Priority date: 1999-03-04
Filing date: 1999-03-04
Publication date: 2005-04-27
Anticipated expiration: 2019-03-04
Also published as: JP2000258287A

Description

【０００１】
【発明の属する技術分野】
本発明は、振動試験での振動応答のモニタリングシステムに係り、特に部分構造物や縮小模型の耐震試験や、部分構造物の振動試験と全体構造物の数値実験をオンラインで行う仮動試験等に好適な振動モニタリングシステムに関する。
【０００２】
【従来の技術】
従来の振動試験での計測データ表示には、計測された振動応答の時刻歴波形表示または２つの異なる計測データ間の相関関係（例えば荷重変位関係の履歴線図等）の逐次表示が用いられる。また、例えば「ME'SCOPE OPERATING MANUAL」（Vibrant Technology，Inc社）等に示されるように、供試体を模擬する数値図形データ，計測された振動応答と図形データの位置対応に関するデータ、及び、非計測点の振動応答を計測された振動応答により補間する方法に関するデータをあらかじめ入力しておいて、これらを基に計測された振動応答を加工して、供試体の振動応答を動画表示させるのが一般的であった。
【０００３】
【発明が解決しようとする課題】
上記の従来の振動試験のモニタリング方法における動画表示方法では、供試体部分のみを対象に振動応答を表示していたため、部分構造試験や縮尺模型試験では、供試体が支持または被支持される構造物へ与える影響等実環境との相互作用を考慮した振動応答を把握できない。
【０００４】
このため振動試験終了後に計測データをディジタル化して計算機へ入力し、供試体が実環境で使用される状況を考慮した解析または演算を行う必要があり、実験による現象解明のための作業が煩雑であった。
【０００５】
特に、地震等の外力が加わる構造物の振動応答を調べる方法のひとつである、構造物の一部分のみを供試体とし、他の部分は計算機内に数値モデル化し、供試体の加振実験と他の部分の数値実験をオンラインで行う仮動実験においては、供試体の振動応答のみを表示するだけでは、全体構造系の振動変形が把握しづらく、実験終了後に、加振データ，計測データ、及び、数値実験結果データなどを参照して検証を行うなど作業が煩雑であった。
【０００６】
さらに、部分構造である供試体の減衰を変化させたり、あるいはウエイトを付加する等の構造変更により全体系の応答の変化を調べるパラメータ実験を行う場合でも、各実験ごとに全体構造系の変位，応力などを実験を行いながら瞬時に応答を把握すれば、開発の効率化を図ることができる。
【０００７】
また、大型振動台等による耐震実験などでは、入力波形として実際の地震波形を用いる場合のみならず、あらかじめ数値シミュレーションにより求めた供試体のすえつけ位置での地震応答波形を用いる場合がある。
【０００８】
従来の試験結果表示手法では、振動台の揺れと供試体の揺れの表示であり、地震波がどのようにすえつけ構造物を介して供試体を揺らせているかを把握しづらかったり、すえつけ位置での揺れが地面の揺れと性質が大きく異なる場合に、実験終了後のデータ加工作業が必要であった。
【０００９】
本発明の目的は、上記問題を解決し、振動実験と、実験データ加工及び表示を同時に行う振動モニタリングシステムを提供することにある。
【００１０】
【課題を解決するための手段】
上記目的は、供試体を時間とともに変化する外力で加振する振動試験に使用され、時間とともに変化する供試体の振動応答を計測する計測手段と、この計測手段が計測した供試体の実測振動応答を加工する加工手段と、計測手段が計測した供試体の実測振動応答を前記加工手段へ逐次オンライン転送する転送手段と、加工手段が加工した供試体の振動応答に基づいて供試体の振動変形挙動を逐次表示する表示装置とを備える振動モニタリングシステムにおいて、加工手段には、仮想的な環境の力学モデルデータベースと、供試体に外力が作用したときの仮想的な環境の振動応答データベースと、供試体と仮想的な環境の形状に関する形状モデルデータベースが接続されており、加工手段は、仮想的な環境の力学モデルデータベースを用いて仮想的な環境の振動応答データベースから、供試体の振動応答を計測した計測時刻と同時刻における仮想的な環境の振動応答を取り込む仮想環境の振動応答の定義手段と、供試体の実測振動応答と定義手段が取り込んだ仮想環境の振動応答とを合成する合成手段と、合成手段が合成した振動応答および形状モデルデータベースから供試体を含む仮想的な環境の振動応答を作画する作画手段とを備え、表示装置は作画手段が作画した画像を逐次表示可能であることにより、達成される。
【００１１】
【発明の実施の形態】
図１に本発明による振動モニタリングシステムの一実施例を示す。図において、１は加振機、２は供試体、３は振動応答の計測手段、４は振動応答の転送手段、５は供試体の実測振動応答の計測時刻と同時刻の仮想環境の振動応答の定義手段、６は供試体の実測振動応答と仮想環境の振動応答の合成手段、７は供試体と仮想環境の作画手段、８は表示装置、９は仮想環境の力学データベース、１０は仮想環境の振動応答データベース、１１は供試体と仮想環境の形状データベースであり、１０２は加工手段であり、仮想環境の振動応答の定義手段５，供試体の実測振動応答と仮想環境の振動応答の合成手段６，供試体と仮想環境の作画手段７が装備されている、例えば計算機等の処理装置である。
【００１２】
図１において、加振機１はあらかじめ加振機の制御装置１０１に入力された加振波形を再現するように作動するものである。振動応答の計測装置３は変位や加速度などの振動応答を電気信号として感知するものである。振動応答の転送手段４は、電気信号としてとりこまれた振動応答を数値データとして加工手段１０２に転送するものである。
【００１３】
供試体の実測振動応答の計測時刻と同時刻の仮想環境の振動応答の定義手段５，供試体の実測振動応答と仮想環境の振動応答の合成手段６，供試体と仮想環境の作画手段７は具体的には加工手段１０２内部に備えられたデータ処理手順のプログラムであり、仮想環境の力学データベース９，仮想環境の振動応答データベース１０，供試体と仮想環境の形状データベース１１は例えば前記加工手段102に接続された外部記憶装置上のデータファイルである。表示装置８は前記加工手段１０２に接続された具体的にはＣＲＴディスプレイ等である。
【００１４】
本実施例において、供試体の実測振動応答の計測時刻と同時刻の仮想環境の振動応答の定義手段５は、仮想環境の力学データベース９と仮想環境の振動応答データベース１０より必要なデータをとりこみ、あらかじめ定めた方法に従って供試体の振動応答が計測されたのとほぼ同時刻の仮想環境の振動応答を決定するものであり、例えば計測された供試体の振動応答を入力として仮想環境の振動応答を数値シミュレーションにより算出するものでもよい。
【００１５】
供試体の実測振動応答と仮想環境の振動応答の合成手段６は、ある時刻での供試体の実測振動応答と、その時刻での仮想環境の振動応答とを例えば変形データ等のあらかじめ選択した物理量に関する作画用の振動応答データとして作成するプログラムであり、具体的には表示時刻の選択，表示する物理量の選択された時刻での値の読み込み、あらかじめ定められた画面の視点に応じた前記選択された物理量の演算，画面情報への変換という手段がとられる。
【００１６】
供試体と仮想環境の画像手段７は、供試体と仮想環境の形状データベース１１より必要なデータをとりこみ、前記振動応答の合成手段６により作成された作画用の振動応答データを用いて、供試体及び仮想的な環境の例えば変形図等の振動応答状態を表す図として図化する。作図情報は、表示装置８により表示される。
【００１７】
本実施例によれば、供試体の加振実験を行い、実測振動応答と、定めた方法に従って加工されたその時刻での仮想的な環境の振動応答とを、逐次同一画面で表示するために、振動実験を行いながら供試体を支持または非支持される構造物へ与える影響等を把握でき、現象の理解を促し、また、実験データの後処理の作業を省くことができる。
【００１８】
図２には、本発明の別の実施例である耐震試験の振動モニタリングへの適用例を示す。供試体２は加振機１に連結された振動台２０１に搭載され、振動台201を介して加振機１により加振機の制御装置１０１に入力されている地震波で加振される。加振による供試体の振動応答は振動応答の計測装置３で計測され、振動応答の転送手段４により加工手段１０２へ転送される。
【００１９】
加工手段１０２に装備された供試体の実測振動応答の計測時刻と同時刻の仮想環境の振動応答の定義手段５は、あらかじめ実物あるいは仮想環境の力学的モデルを用いた数値シミュレーション等により試験で用いているものと同じ地震波波形に対する地震応答を仮想環境の振動応答データベース１０として準備しておき、その中から必要な時刻の地震応答データをとりこむ。
【００２０】
供試体の実測振動応答と仮想環境の振動応答の合成手段６は、供試体の実測振動応答と仮想環境の振動応答を用いて定められた視点からの例えば変形挙動等の振動応答を表すように変換及び合成を行い作画用の振動応答データを作成する。
【００２１】
供試体と仮想環境の作画手段７は、供試体及び仮想環境の形状データベース
１１と、振動応答の合成手段６より得られた作画用の振動応答データとを用いて、供試体及び仮想環境の例えば変形図等の振動応答状態に関する図を作図する。供試体及び仮想環境の振動応答挙動として作成された作図情報は、表示装置８により逐次表示される。
【００２２】
図３は、表示画面３０１の静止時の表示例であり、図４は表示画面３０１のある時刻での変形図の表示例であり、それぞれ供試体３０２と仮想環境３０３が同一画面で、同一の地震波に対する同一時刻の振動変形挙動として図化されている。表示においては、図４に示すように、地震入力波形または選択した点の選択した物理量の時刻歴波形などを同時に表示してもよい。
【００２３】
本実施例によれば、供試体の地震波加振実験結果を、同一地震波による仮想環境の振動応答と逐次同一画面で表示できるため、構造諸元の異なる構造物の地震応答との比較が容易になる。または、加振波形が供試体のすえつけ位置での地震応答波形である場合では、供試体と供試体がすえつけられている構造物の地震応答を同時に表示でき、地面の揺れがどのように供試体に伝わるか容易に把握できる。このため、実験データの後処理を省くことができる効果がある。
【００２４】
図５は、本発明のさらに別の実施例であり、本発明の仮動実験への一適用例を示す。例えば、図６に示すような多層の全体構造物６０１の最下層６０２を供試体としてとりだし、全体構造物と基礎との境界より地震波等で加振される場合の振動応答を調べることを考える。
【００２５】
図５において、部分構造供試体５０１は加振機で加振し、他の部分は加振機１に接続された制御用計算機１０１内の数値モデルに時々刻々の部分構造供試体５０１の実測振動応答と入力地震波データを作用させて数値シミュレーション解析を行い、その結果をもとに加振機の加振条件を定める仮動実験を行う。加振による部分構造供試体５０１の振動応答は振動応答の計測装置３で計測され、振動応答の転送手段４により加工手段１０２へ転送される。
【００２６】
加工手段１０２に装備された供試体の実測振動応答の計測時刻と同時刻の仮想環境の振動応答の定義手段５は、供試体の計測された振動応答の変位，加速度，反力等と入力地震波データより、供試体以外の部分の振動応答を数値シミュレーションする手段５０２により供試体の実測振動応答の計測時刻とほぼ同時刻での仮想的な全体構造物の振動応答を計算する。
【００２７】
供試体の実測振動応答と仮想環境の振動応答の合成手段６は、ある時刻での供試体の計測された振動応答と、その時刻での仮想環境の振動応答より定められた物理量を選び、定められた視点からの例えば変形挙動を表すように振動応答の変換及び合成を行い作画用の振動応答データを作成する。
【００２８】
供試体と仮想環境の作画手段７は、供試体と仮想的な全体構造物の形状データを備える仮想環境の形状データベース１１，振動応答の合成手段７より得られた作画用の振動応答データとを用いて、供試体を含む仮想的な全体構造物の例えば振動変形図等の振動応答状態に関する図を作図する。
【００２９】
実物大の仮想構造物の例えば振動変形挙動として作成された作図情報は、表示装置８により逐次表示される。供試体の計測された振動応答の変位，加速度，反力等と地震入力波形とより供試体以外の部分の振動応答を数値シミュレーションする手段５０２は例えば運動方程式数１に従い供試体以外の部分の加速度，速度，変位等を求めてもよい。
【００３０】
【数１】

【００３１】
ここで、［Ｍ］は仮想全体構造の供試体以外の部分についての質量マトリクス
［Ｃ］は仮想全体構造の供試体以外の部分についての質量マトリクス
［Ｋ］は仮想全体構造の供試体以外の部分についての剛性マトリクス
［ｘ］は仮想全体構造の供試体以外の部分についての変位ベクトル・は時間微分
｛ｆ｝は地震等により仮想全体構造の供試体以外の部分に加わる外力ベクトル
｛ｑ｝は供試体より仮想全体構造の供試体以外の部分に加わる反力ベクトル
また、加振機１に接続された制御用計算機１０１は、供試体の計測された振動応答の変位，加速度，反力等と地震入力波形を用いて供試体以外の部分の振動応答を数値シミュレーションする手段５０２と同じ働きをすることより、制御用計算機１０１より仮想的な全体構造系の振動応答数値シミュレーション結果を転送手段５０３により加工手段１０２へ転送してもよい。
【００３２】
図７は、図５の仮動実験の従来の振動実験結果の表示方法に従う供試体部分６０２だけの変形図の表示画面であり、図８は、本発明を実施した場合の仮想的な全体構造系６０１の変形図の表示画面の例である。
【００３３】
本実施例によれば、部分構造試験を行いながら全体構造物の応答が把握できるため、実験データの後処理の手間が省けるとともに、部分構造の変更による全体応答の変化が実験を行いながら把握できるため、構造改良に費やす時間が短縮される。
【００３４】
図９は、本発明のさらに別の一実施例である。供試体２は加振機１によりあらかじめ加振機の制御装置１０１に入力された加振波形により載荷される。振動応答の計測装置３により計測された供試体の実測振動応答は、振動応答の転送手段４により電気信号として加工手段１０２に転送される。
【００３５】
加工手段１０２に装備された供試体の実測振動応答の計測時刻と同時刻の仮想環境の振動応答の定義手段５は、仮想環境の力学データベース９と仮想環境の振動応答データベース１０より必要なデータをとりこみ、あらかじめ定めた方法に従って供試体の振動応答が計測されたのとほぼ同時刻の仮想環境の振動応答を決定するものである。
【００３６】
また、供試体の実測振動応答及び前記定義手段５により定義された仮想環境の振動応答は、定義後振動応答の記憶手段９０１により定義後の振動応答データファイル９０２に記憶される。定義後の振動応答データファイル９０２は、実験終了後に参照可能なデータファイルであり、加工手段１０２に接続された外部記憶装置であってもよい。
【００３７】
また、供試体の実測振動応答と仮想環境の振動応答の合成手段６は、ある時刻での供試体の実測振動応答と、その時刻での仮想環境の振動応答とを例えば変形データ等の作画用の振動応答データとして作成する。
【００３８】
供試体と仮想環境の作画手段７は、供試体と仮想環境の形状データベース１１より必要なデータをとりこみ、前記合成手段６により作成された作画用の振動応答データを用いて、供試体及び仮想的な環境の例えば変形図等の振動応答状態を図化する。作図情報は、表示装置８により表示される。
【００３９】
本実施例によれば、供試体の加振実験を行い、計測された振動応答と、定めた方法に従って加工されたその時刻での仮想的な環境の振動応答とを、逐次同一画面で表示するとともに、振動応答に関するデータを記憶し、実験終了後に参照可能としているために、実験データの後処理を合理化できる。
【００４０】
図１０は、本発明のさらに別の一実施例である。供試体２は加振機１によりあらかじめ加振機の制御装置１０１に入力された加振波形により載荷される。振動応答の計測装置３により計測された供試体の実測振動応答は、振動応答の転送手段４により電気信号として加工手段１０２に転送される。
【００４１】
加工手段１０２に装備された供試体の実測振動応答の計測時刻と同時刻の仮想環境の振動応答の定義手段５は、仮想環境の力学データベース９と仮想環境の振動応答データベース１０より必要なデータをとりこみ、あらかじめ定めた方法に従って供試体の振動応答が計測されたのとほぼ同時刻の仮想環境の振動応答を決定するものである。
【００４２】
また、供試体の実測振動応答と仮想環境の振動応答の合成手段６は、ある時刻での供試体の実測振動応答と、その時刻での仮想環境の振動応答とを作画用の振動応答データとして合成及び変換等により作成する。
【００４３】
供試体と仮想環境の作画手段７は、供試体と仮想環境の形状データベース１１より必要なデータをとりこみ、前記合成手段６により作成された作画用の振動応答データを用いて、供試体及び仮想的な環境の振動応答に関する作画情報を作成して図化する。作画情報は例えば変形図等であってもよい。
【００４４】
作画手段７により作成された供試体及び仮想的な環境の振動応答に関する作画情報は、作画情報記憶手段１００１により、画像データファイル１００２に記憶される。画像データファイル１００２は、実験終了後に参照可能なデータファイルであり、加工手段１０２に接続された外部記憶装置であってもよい。作画手段７により作成された作図情報は、表示装置８により表示される。
【００４５】
本実施例によれば、供試体の加振実験を行い、計測された振動応答と、定めた方法に従って加工されたその時刻での仮想的な環境の振動応答とを、逐次同一画面で表示するとともに、画像データを記憶し、実験終了後に参照可能としているために、実験データの後処理における図化作業を合理化できる。
【００４６】
図１１は、本発明のさらに別の一実施例である。加振機１に接続される振動台２０１上に、大型構造物の縮尺模型供試体１１０１が搭載されている。加振による供試体の振動応答は振動応答の計測装置３で計測され、振動応答の転送手段４により加工手段１０２へ転送される。
【００４７】
加工手段１０２に装備された仮想環境の振動応答の定義手段５は、供試体の計測された振動応答の変位，加速度等の各物理量に対して、縮尺模型と実物大の仮想構造物との間の力学的相似則に従う変換手段１１０２により、実物大の仮想構造物の振動応答に変換する。
【００４８】
供試体の振動応答計測点に対応する実物大の仮想構造物の点についての振動データは得られているが、供試体の振動応答計測点に対応しない実物大の仮想構造物の点の振動応答は、非計測点対応点振動データ作成手段１１０３により振動データが得られている点の振動応答に基づき補間して求めてもよいし、あらかじめ実物大の仮想構造物の振動応答計算等を行った結果の振動データを仮想環境の振動応答データベース１０として準備しておきその中から必要に応じてとりこんでもよい。
【００４９】
また、本実施例では供試体の実測振動応答と仮想環境の振動応答の合成手段６は、ある時刻での供試体の実測振動応答と、その時刻での仮想環境の振動応答より定められた物理量を選び、定められた視点からの振動応答を表すように振動応答の変換及び合成を行って作画用の振動応答データを作成する。
【００５０】
供試体と仮想環境の作画手段７は、実物大の仮想構造物の形状データを備える仮想環境の形状データベース１１と、振動応答の定義手段５より得られた実物大の仮想構造物の作画用の振動応答データとを用いて、実物大の仮想構造物の振動応答を作図する。
【００５１】
実物大の仮想構造物の例えば変形図等の振動応答として作成された作図情報は、表示装置８により逐次表示される。縮尺模型と実物大の仮想構造物との間の力学的相似則に従う変換手段１１０２では、供試体と実物大の仮想構造物の長さをそれぞれＬｍ，Ｌｐとすると実物大の仮想構造物の変位δｐは、計測された変位δｍにＬｍ／Ｌｐを乗じて求めたり、実物大の仮想構造物の応力σｐは計測された応力σｍに実物大の仮想構造物の縦弾性係数Ｅｐを供試体の縦弾性係数Ｅｍで除したものを乗じて求めてもよい。
【００５２】
本実施例によれば、縮尺模型の振動試験を行うと同時に、実物の振動応答が把握できるために、実験データの後処理の手間が短縮される効果がある。
【００５３】
図１２は、本発明の振動モニタリングシステムの表示画面の一例である。これは、加振実験の対象の供試体の振動による変形図３０２と、仮想環境として供試体の振動による音圧を数値シミュレーションにより求めた結果を同一画像で示すものである。
【００５４】
音圧をある定めた数値範囲に応じてレベル分けし、図１２では例えばレベル１の音圧を１２０１，レベル２の音圧を１２０２，レベル３の音圧を１２０３，レベル４の音圧を１２０４とし、それぞれの線分で囲まれる範囲をそれぞれの音圧レベルに対応する色で塗りつぶして表示する。
【００５５】
本実施例によれば、供試体の振動試験を行いながら、供試体の振動応答が仮想的な環境へ与える影響を変形と応力など複数の物理量により把握でき、現象の理解を促し、実験データの後処理に費やす時間を短縮でき試験及び解析コスト，構造改良に伴うコストの低減を図ることができる効果がある。
【００５６】
【発明の効果】
本発明の振動モニタリングシステムによれば、従来の動画表示方法では，供試体のみを対象とする動画表示であるため、部分構造試験や縮尺模型試験等での供試体に支持または被支持される構造物との動的な相互作用を考慮した振動応答を振動試験を行いながら把握できるため、実験データの後処理に費やす時間を短縮でき試験及び解析コストの低減を図ることができる．
【図面の簡単な説明】
【図１】本発明による振動モニタリングシステムの一実施例の構成を示す図である。
【図２】本発明による振動モニタリングシステムの一実施例を示す図である。
【図３】図２の振動モニタリングシステムの静止時の表示画面を示す図である。
【図４】図２の振動モニタリングシステムのある時刻の表示画面を示す図である。
【図５】本発明による振動モニタリングシステムの一実施例を示す図である。
【図６】図５の振動モニタリングシステムを適用する構造物の図である。
【図７】従来の仮動実験での変形の表示例を示す図である。
【図８】図５の振動モニタリングシステムの変形の一表示例を示す図である。
【図９】本発明による振動モニタリングシステムの一実施例を示す図である。
【図１０】本発明による振動モニタリングシステムの一実施例を示す図である。
【図１１】本発明による振動モニタリングシステムの一実施例を示す図である。
【図１２】本発明の振動モニタリングシステムの一表示例を示す図である。
【符号の説明】
１…加振機、２…供試体、３…計測装置、４…転送手段、５…実測振動応答の計測時刻と同時刻の仮想環境の振動応答の定義手段、６…供試体の実測振動応答と仮想環境の振動応答の合成手段、７…供試体と仮想環境の作画手段、８…表示装置、９…仮想環境の力学データベース、１０…仮想環境の振動応答データベース、１１…供試体と仮想環境の形状データベース、１０１…加振機の制御装置、１０２…加工手段、２０１…振動台、３０１…表示画面、３０２…表示された供試体、３０３…表示された仮想環境、５０１…部分構造供試体、５０２…供試体以外の部分の振動応答を数値シミュレーションする手段、５０３…振動応答数値シミュレーション結果の転送手段、６０１…多層の全体構造物、６０２…多層の全体構造物の最下層、９０１…同時刻の供試体の実測振動応答と仮想環境の定義された振動応答の記憶手段、９０２…定義後の振動応答データファイル、1001…作画情報の記憶手段、１００２…画像データファイル、１１０１…大型構造物の縮尺模型供試体、１１０２…縮尺模型と実物大の仮想構造物との間の力学的相似則に従う変換手段、１１０３…非計測点対応点振動データ作成手段、１２０１…仮想環境の音圧表示におけるレベル１の音圧範囲、１２０２…仮想環境の音圧表示におけるレベル２の音圧範囲、１２０３…仮想環境の音圧表示におけるレベル３の音圧範囲、１２０４…仮想環境の音圧表示におけるレベル４の音圧範囲。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vibration response monitoring system in a vibration test, particularly for seismic tests of substructures and reduced models, and for subsistence tests that perform on-line vibration tests of substructures and numerical experiments of the entire structure. The present invention relates to a suitable vibration monitoring system.
[0002]
[Prior art]
For the measurement data display in the conventional vibration test, a time history waveform display of the measured vibration response or a sequential display of a correlation between two different measurement data (for example, a history diagram of a load displacement relationship) is used. In addition, as shown in “ME'SCOPE OPERATING MANUAL” (Vibrant Technology, Inc.), etc., numerical figure data that simulates a specimen, data on the positional correspondence between measured vibration response and figure data, and non- It is possible to input in advance data related to the method of interpolating the vibration response of the measurement point based on the measured vibration response, process the vibration response measured based on these data, and display the vibration response of the specimen as a movie. It was general.
[0003]
[Problems to be solved by the invention]
In the moving image display method in the conventional vibration test monitoring method described above, the vibration response is displayed only for the specimen part. Therefore, in the partial structure test and the scale model test, the structure in which the specimen is supported or supported. It is impossible to grasp the vibration response considering the interaction with the real environment such as the influence on the environment.
[0004]
For this reason, it is necessary to digitize the measurement data after the vibration test and input it to the computer to perform analysis or calculation taking into account the situation in which the specimen is used in the actual environment. there were.
[0005]
In particular, one of the methods for examining the vibration response of a structure to which an external force such as an earthquake is applied, only a part of the structure is used as a specimen, and the other part is numerically modeled in a computer to perform vibration tests on the specimen and others. In the temporary motion experiment in which the numerical experiment of this part is performed online, it is difficult to grasp the vibration deformation of the entire structural system only by displaying only the vibration response of the specimen. After the experiment is completed, the excitation data, measurement data, and The work was complicated, for example, verification was performed with reference to numerical experiment result data.
[0006]
Furthermore, even when conducting parametric experiments to investigate changes in the response of the entire system by changing the structure of the test specimen, which is a partial structure, or adding weights, the displacement of the entire structure system, If the response is grasped instantaneously while conducting experiments on stress, etc., development efficiency can be improved.
[0007]
In addition, in an earthquake resistance test using a large shaking table or the like, not only an actual earthquake waveform is used as an input waveform, but also an earthquake response waveform at a mounting position of a specimen obtained in advance by numerical simulation may be used.
[0008]
The conventional test result display method is a display of shaking of the shaking table and shaking of the specimen, and it is difficult to grasp how the seismic wave is shaking the mounting structure, or at the setting position. Data processing work after the end of the experiment was necessary when the swaying of the rock was significantly different from the ground swaying.
[0009]
An object of the present invention is to provide a vibration monitoring system that solves the above-described problems and simultaneously performs vibration experiments and experiment data processing and display.
[0010]
[Means for Solving the Problems]
The above-mentioned purpose is used for a vibration test in which a specimen is vibrated with an external force that changes with time. A measuring means for measuring a vibration response of the specimen that changes with time, and an actual vibration response of the specimen measured by the measuring means. Processing means for processing the specimen, transfer means for sequentially transferring the measured vibration response of the specimen measured by the measuring means to the processing means, and vibration deformation behavior of the specimen based on the vibration response of the specimen processed by the processing means In the vibration monitoring system comprising a display device for sequentially displaying a virtual environment dynamic model database, a virtual environment vibration response database when an external force acts on the specimen, and a specimen And a shape model database related to the shape of the virtual environment are connected to each other. A virtual environment vibration response that captures the virtual environment vibration response at the same time as the measurement time when the vibration response of the specimen was measured from the vibration response database of the typical environment, and the measured vibration response of the specimen comprising synthesizing means for synthesizing the vibration response of the virtual environment captured by the means, and create image means combining means for drawing a vibrational response of the virtual environment that contains the specimen from the vibration response and the shape model database were synthesized, The display device is achieved by being able to sequentially display images drawn by the drawing means.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows an embodiment of a vibration monitoring system according to the present invention. In the figure, 1 is a vibrator, 2 is a specimen, 3 is a vibration response measuring means, 4 is a vibration response transferring means, and 5 is a vibration response of the virtual environment at the same time as the measurement time of the measured vibration response of the specimen. 6 is a synthesizing means for the measured vibration response of the specimen and the vibration response of the virtual environment, 7 is a drawing means for the specimen and the virtual environment, 8 is a display device, 9 is a dynamic database of the virtual environment, and 10 is a virtual environment. , 11 is a shape database of the specimen and the virtual environment, 102 is a processing means, definition means 5 for the vibration response of the virtual environment 5, and a means for synthesizing the measured vibration response of the specimen and the vibration response of the virtual environment 6, a processing device such as a computer equipped with a specimen and a virtual environment drawing means 7.
[0012]
In FIG. 1, a vibrator 1 operates so as to reproduce a vibration waveform input in advance to a control device 101 of the vibrator. The vibration response measuring device 3 senses vibration response such as displacement and acceleration as an electrical signal. The vibration response transfer means 4 transfers the vibration response incorporated as an electrical signal to the processing means 102 as numerical data.
[0013]
The means for defining the vibration response of the virtual environment at the same time as the measurement time of the measured vibration response of the specimen, the means for synthesizing the measured vibration response of the specimen and the vibration response of the virtual environment 6, and the means for drawing the specimen and virtual environment 7 Specifically, it is a data processing procedure program provided inside the processing means 102. The virtual environment dynamics database 9, the virtual environment vibration response database 10, and the specimen and virtual environment shape database 11 are, for example, the processing means 102. Is a data file on an external storage device connected to the. The display device 8 is specifically a CRT display or the like connected to the processing means 102.
[0014]
In this embodiment, the virtual environment vibration response defining means 5 at the same time as the measurement time of the measured vibration response of the specimen takes in necessary data from the dynamic environment dynamic database 9 and the virtual environment vibration response database 10. The vibration response of the virtual environment is determined at almost the same time as the vibration response of the specimen is measured according to a predetermined method. For example, the vibration response of the virtual environment is obtained by inputting the measured vibration response of the specimen. It may be calculated by numerical simulation.
[0015]
The synthesizing means 6 of the measured vibration response of the specimen and the vibration response of the virtual environment is a physical quantity selected in advance, such as deformation data, from the measured vibration response of the specimen at a certain time and the vibration response of the virtual environment at the time. Is generated as vibration response data for drawing, specifically, selection of a display time, reading of a value of a physical quantity to be displayed at a selected time, and the selection according to a predetermined screen viewpoint Means of calculating physical quantities and converting to screen information are taken.
[0016]
The specimen and virtual environment image means 7 fetches necessary data from the specimen and virtual environment shape database 11 and uses the vibration response data for drawing created by the vibration response synthesis means 6 to use the specimen. And a diagram representing a vibration response state of a virtual environment such as a deformation diagram. The drawing information is displayed by the display device 8.
[0017]
According to the present embodiment, the vibration test of the specimen is performed, and the actual vibration response and the vibration response of the virtual environment at that time processed according to the defined method are sequentially displayed on the same screen. It is possible to grasp the influence of the specimen on the structure that is supported or unsupported while conducting the vibration experiment, to facilitate understanding of the phenomenon, and to omit the post-processing work of the experimental data.
[0018]
In FIG. 2, the example of application to the vibration monitoring of the seismic test which is another Example of this invention is shown. The specimen 2 is mounted on a vibration table 201 connected to the shaker 1, and is vibrated with the seismic wave input to the vibration control device 101 by the shaker 1 through the vibration table 201. The vibration response of the specimen due to vibration is measured by the vibration response measuring device 3 and transferred to the processing means 102 by the vibration response transfer means 4.
[0019]
The virtual environment vibration response defining means 5 at the same time as the measurement time of the measured vibration response of the specimen mounted on the processing means 102 is used in a test by numerical simulation using a mechanical model of the real or virtual environment in advance. An earthquake response to the same seismic wave waveform is prepared as a vibration response database 10 in a virtual environment, and earthquake response data at a required time is taken from the earthquake response database 10.
[0020]
The synthesizing means 6 of the measured vibration response of the specimen and the vibration response of the virtual environment represents a vibration response such as a deformation behavior from a viewpoint determined by using the measured vibration response of the specimen and the vibration response of the virtual environment. Convert and combine to create vibration response data for drawing.
[0021]
The specimen and virtual environment drawing means 7 uses, for example, the specimen and virtual environment shape database 11 and the vibration response data for drawing obtained from the vibration response synthesizing means 6. Drawings related to vibration response states such as deformation diagrams. The drawing information created as the vibration response behavior of the specimen and the virtual environment is sequentially displayed by the display device 8.
[0022]
3 is a display example when the display screen 301 is stationary, and FIG. 4 is a display example of a modified view at a certain time on the display screen 301. The specimen 302 and the virtual environment 303 are the same screen, and the same It is illustrated as vibration deformation behavior at the same time for seismic waves. In the display, as shown in FIG. 4, an earthquake input waveform or a time history waveform of a selected physical quantity at a selected point may be displayed at the same time.
[0023]
According to this embodiment, the seismic excitation test result of the specimen can be displayed on the same screen sequentially with the vibration response of the virtual environment due to the same seismic wave, so it is easy to compare with the seismic response of structures with different structural specifications. Become. Or, if the excitation waveform is the seismic response waveform at the mounting position of the specimen, the seismic response of the specimen and the structure where the specimen is installed can be displayed at the same time, and how the ground shaking You can easily grasp whether it is transmitted to the specimen. For this reason, there is an effect that post-processing of experimental data can be omitted.
[0024]
FIG. 5 shows still another embodiment of the present invention and shows an application example of the present invention to a temporary motion experiment. For example, consider the case where a lowermost layer 602 of a multi-layered overall structure 601 as shown in FIG. 6 is taken out as a specimen, and the vibration response when excited by an earthquake wave or the like from the boundary between the whole structure and the foundation is considered.
[0025]
In FIG. 5, the partial structure specimen 501 is vibrated with a vibration exciter, and the other parts are measured vibration of the partial structure specimen 501 every moment in the numerical model in the control computer 101 connected to the vibration exciter 1. A numerical simulation analysis is performed by applying the response and input seismic wave data, and a temporary motion experiment is performed to determine the excitation condition of the shaker based on the result. The vibration response of the partial structure specimen 501 due to the vibration is measured by the vibration response measuring device 3 and transferred to the processing means 102 by the vibration response transfer means 4.
[0026]
The means 5 for defining the vibration response of the virtual environment at the same time as the measurement time of the measured vibration response of the specimen mounted on the processing means 102 is the displacement, acceleration, reaction force, etc. of the measured vibration response of the specimen and the input seismic wave. Based on the data, the vibration response of the virtual entire structure at the same time as the measurement time of the actual vibration response of the specimen is calculated by means 502 for numerically simulating the vibration response of the part other than the specimen.
[0027]
The synthesis means 6 for the measured vibration response of the specimen and the vibration response of the virtual environment selects a physical quantity determined from the measured vibration response of the specimen at a certain time and the vibration response of the virtual environment at that time, For example, vibration response data for drawing is generated by converting and synthesizing the vibration response so as to represent, for example, the deformation behavior from the given viewpoint.
[0028]
The specimen and virtual environment drawing means 7 includes the virtual environment shape database 11 including shape data of the specimen and the virtual entire structure, and the vibration response data for drawing obtained from the vibration response synthesizing means 7. By using this, a diagram relating to a vibration response state such as a vibration deformation diagram of a virtual entire structure including the specimen is drawn.
[0029]
Drawing information created as, for example, vibration deformation behavior of a full-scale virtual structure is sequentially displayed by the display device 8. The means 502 for numerically simulating the vibration response of the part other than the specimen based on the displacement, acceleration, reaction force, etc. of the measured vibration response of the specimen and the seismic input waveform is, for example, the acceleration of the part other than the specimen according to the equation of motion 1 , Speed, displacement, etc. may be obtained.
[0030]
[Expression 1]

[0031]
Here, [M] is a mass matrix [C] for a part other than the virtual whole structure specimen, and [C] is a mass matrix [K] for a part other than the virtual whole structure specimen, except for the virtual whole structure specimen. The stiffness matrix [x] is the displacement vector for the part other than the specimen of the virtual whole structure, and is the time derivative {f} is the external force vector {q} applied to the part other than the specimen of the virtual whole structure due to an earthquake or the like. The reaction force vector applied to the part other than the specimen of the virtual whole structure from the specimen, and the control computer 101 connected to the vibration exciter 1 includes the displacement, acceleration, reaction force, etc. of the measured vibration response of the specimen and the earthquake. By performing the same function as the means 502 for numerically simulating the vibration response of the part other than the specimen using the input waveform, the vibration response numerical system of the virtual entire structure system is controlled by the control computer 101. The simulation result may be transferred to the processing means 102 by the transfer means 503.
[0032]
FIG. 7 is a display screen of a modified view of only the specimen portion 602 according to the conventional vibration experiment result display method of the temporary motion experiment of FIG. 5, and FIG. 8 is a virtual overall structure when the present invention is implemented. It is an example of a display screen of a modified view of the system 601.
[0033]
According to this embodiment, since the response of the whole structure can be grasped while performing the partial structure test, the labor of post-processing of the experimental data can be saved, and the change of the whole response due to the change of the partial structure can be grasped while performing the experiment. Therefore, the time spent for structural improvement is shortened.
[0034]
FIG. 9 shows still another embodiment of the present invention. The specimen 2 is loaded by the vibration generator 1 according to the vibration waveform previously input to the vibration control device 101. The measured vibration response of the specimen measured by the vibration response measuring device 3 is transferred to the processing means 102 as an electrical signal by the vibration response transfer means 4.
[0035]
The virtual environment vibration response defining means 5 at the same time as the measurement time of the measured vibration response of the specimen mounted on the processing means 102 receives necessary data from the dynamic environment dynamic database 9 and the virtual environment vibration response database 10. In this method, the vibration response of the virtual environment is determined at approximately the same time as the vibration response of the specimen was measured according to a predetermined method.
[0036]
Further, the actual vibration response of the specimen and the vibration response of the virtual environment defined by the definition means 5 are stored in the vibration response data file 902 after definition by the storage means 901 of the post-definition vibration response. The vibration response data file 902 after the definition is a data file that can be referred to after the end of the experiment, and may be an external storage device connected to the processing means 102.
[0037]
Further, the synthesizing means 6 of the measured vibration response of the specimen and the vibration response of the virtual environment is used to draw the measured vibration response of the specimen at a certain time and the vibration response of the virtual environment at that time, for example, for drawing deformation data or the like. Created as vibration response data.
[0038]
The specimen and virtual environment drawing means 7 fetches necessary data from the specimen and virtual environment shape database 11, and uses the vibration response data for drawing created by the synthesis means 6. A vibration response state such as a deformation diagram of a simple environment is illustrated. The drawing information is displayed by the display device 8.
[0039]
According to the present embodiment, the vibration test of the specimen is performed, and the measured vibration response and the vibration response of the virtual environment at that time processed according to the defined method are sequentially displayed on the same screen. At the same time, since data related to vibration response is stored and can be referred to after the experiment is completed, post-processing of the experiment data can be streamlined.
[0040]
FIG. 10 shows still another embodiment of the present invention. The specimen 2 is loaded by the vibration generator 1 according to the vibration waveform previously input to the vibration control device 101. The measured vibration response of the specimen measured by the vibration response measuring device 3 is transferred to the processing means 102 as an electrical signal by the vibration response transfer means 4.
[0041]
The virtual environment vibration response defining means 5 at the same time as the measurement time of the measured vibration response of the specimen mounted on the processing means 102 receives necessary data from the dynamic environment dynamic database 9 and the virtual environment vibration response database 10. In this method, the vibration response of the virtual environment is determined at approximately the same time as the vibration response of the specimen was measured according to a predetermined method.
[0042]
The synthesizing means 6 for the measured vibration response of the specimen and the vibration response of the virtual environment uses the measured vibration response of the specimen at a certain time and the vibration response of the virtual environment at that time as vibration response data for drawing. Created by synthesis and conversion.
[0043]
The specimen and virtual environment drawing means 7 fetches necessary data from the specimen and virtual environment shape database 11, and uses the vibration response data for drawing created by the synthesis means 6. Create and plot drawing information related to vibration response of various environments. The drawing information may be a modified drawing, for example.
[0044]
The drawing information relating to the vibration response of the specimen and the virtual environment created by the drawing means 7 is stored in the image data file 1002 by the drawing information storage means 1001. The image data file 1002 is a data file that can be referred to after the end of the experiment, and may be an external storage device connected to the processing unit 102. The drawing information created by the drawing means 7 is displayed by the display device 8.
[0045]
According to the present embodiment, the vibration test of the specimen is performed, and the measured vibration response and the vibration response of the virtual environment at that time processed according to the defined method are sequentially displayed on the same screen. In addition, since the image data is stored and can be referred to after the experiment is completed, the plotting work in the post-processing of the experiment data can be rationalized.
[0046]
FIG. 11 shows still another embodiment of the present invention. On a shaking table 201 connected to the shaker 1, a scale model specimen 1101 of a large structure is mounted. The vibration response of the specimen due to vibration is measured by the vibration response measuring device 3 and transferred to the processing means 102 by the vibration response transfer means 4.
[0047]
The virtual environment vibration response defining means 5 provided in the processing means 102 is provided between the scale model and the actual virtual structure for each physical quantity such as displacement and acceleration of the measured vibration response of the specimen. Are converted into vibration responses of a full-scale virtual structure.
[0048]
Vibration data is obtained for the point of the full-scale virtual structure corresponding to the vibration response measurement point of the specimen, but the vibration response of the point of the full-scale virtual structure that does not correspond to the vibration response measurement point of the specimen May be obtained by interpolation based on the vibration response of the point for which vibration data is obtained by the non-measurement point corresponding point vibration data creating means 1103, or the vibration response calculation of a full-scale virtual structure was performed in advance. The resulting vibration data may be prepared as a virtual environment vibration response database 10 and loaded from there as needed.
[0049]
In this embodiment, the synthesis means 6 for the measured vibration response of the specimen and the vibration response of the virtual environment is a physical quantity determined from the measured vibration response of the specimen at a certain time and the vibration response of the virtual environment at that time. The vibration response data for drawing is generated by converting and synthesizing the vibration response so as to represent the vibration response from a predetermined viewpoint.
[0050]
The specimen and virtual environment drawing means 7 are used for drawing the virtual environment shape database 11 including the shape data of the real size virtual structure and the real size virtual structure obtained from the vibration response definition means 5. Using the vibration response data, the vibration response of a full-scale virtual structure is plotted.
[0051]
Drawing information created as a vibration response such as a deformation drawing of a full-sized virtual structure is sequentially displayed by the display device 8. In the conversion means 1102 that follows the mechanical similarity between the scale model and the full-scale virtual structure, the length of the specimen and the full-scale virtual structure is Lm and Lp, respectively. δp can be obtained by multiplying the measured displacement δm by Lm / Lp, or the stress σp of the full-scale virtual structure can be obtained by multiplying the measured stress σm by the longitudinal elastic modulus Ep of the full-scale virtual structure. You may obtain | require by multiplying what was remove | divided with the elastic modulus Em.
[0052]
According to the present embodiment, since the vibration response of the real object can be grasped simultaneously with the vibration test of the scale model, the labor of post-processing of the experimental data is shortened.
[0053]
FIG. 12 is an example of a display screen of the vibration monitoring system of the present invention. This shows the deformation image 302 due to the vibration of the specimen to be subjected to the vibration experiment and the result obtained by numerical simulation of the sound pressure due to the vibration of the specimen as a virtual environment in the same image.
[0054]
In FIG. 12, for example, the sound pressure of level 1 is 1201, the sound pressure of level 2 is 1202, the sound pressure of level 3 is 1202, the sound pressure of level 4 is 1204. And the range enclosed by each line segment is displayed with a color corresponding to each sound pressure level.
[0055]
According to this example, while performing a vibration test of the specimen, the influence of the vibration response of the specimen on the virtual environment can be grasped by a plurality of physical quantities such as deformation and stress, and the understanding of the phenomenon is promoted. The time spent on post-processing can be shortened, and the test and analysis costs can be reduced, and the costs associated with structural improvements can be reduced.
[0056]
【The invention's effect】
According to the vibration monitoring system of the present invention, in the conventional moving image display method, since the moving image is displayed only for the specimen, the structure supported or supported by the specimen in a partial structure test, a scale model test, or the like. The vibration response considering the dynamic interaction with the object can be grasped while performing the vibration test, so the time spent on the post-processing of the experimental data can be shortened and the test and analysis costs can be reduced.
[Brief description of the drawings]
FIG. 1 is a diagram showing a configuration of an embodiment of a vibration monitoring system according to the present invention.
FIG. 2 is a diagram showing an embodiment of a vibration monitoring system according to the present invention.
3 is a diagram showing a display screen when the vibration monitoring system of FIG. 2 is stationary. FIG.
4 is a diagram showing a display screen at a certain time in the vibration monitoring system of FIG. 2;
FIG. 5 is a diagram showing an embodiment of a vibration monitoring system according to the present invention.
6 is a diagram of a structure to which the vibration monitoring system of FIG. 5 is applied.
FIG. 7 is a diagram showing a display example of deformation in a conventional temporary motion experiment.
FIG. 8 is a diagram showing a display example of a modification of the vibration monitoring system of FIG.
FIG. 9 is a diagram showing an example of a vibration monitoring system according to the present invention.
FIG. 10 is a diagram showing an example of a vibration monitoring system according to the present invention.
FIG. 11 is a diagram showing an example of a vibration monitoring system according to the present invention.
FIG. 12 is a diagram showing a display example of the vibration monitoring system of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Exciter, 2 ... Specimen, 3 ... Measuring device, 4 ... Transfer means, 5 ... Definition means of vibration response of virtual environment at the same time as measurement time of measured vibration response, 6 ... Measured vibration response of specimen And a virtual environment vibration response synthesizing means, 7 ... a specimen and a virtual environment drawing means, 8 ... a display device, 9 ... a virtual environment dynamics database, 10 ... a virtual environment vibration response database, 11 ... a specimen and a virtual environment , Shape control database, 101 ... vibrator control device, 102 ... machining means, 201 ... shaking table, 301 ... display screen, 302 ... displayed specimen, 303 ... displayed virtual environment, 501 ... partial structure specimen , 502 ... Means for numerical simulation of vibration response of parts other than the specimen, 503 ... Transfer means for vibration response numerical simulation results, 601 ... Multi-layer whole structure, 602 ... Bottom layer of multi-layer whole structure, 01: Measured vibration response of test specimen at the same time and vibration response storage means defined in virtual environment, 902 ... Vibration response data file after definition, 1001 ... Screening information storage means, 1002 ... Image data file, 1101 ... Scale model specimen of large structure, 1102 ... Conversion means according to mechanical similarity between scale model and full-scale virtual structure, 1103 ... non-measurement point corresponding point vibration data creation means, 1201 ... virtual environment sound Sound pressure range of level 1 in pressure display, 1202 ... Sound pressure range of level 2 in sound pressure display of virtual environment, 1203 ... Sound pressure range of level 3 in sound pressure display of virtual environment, 1204 ... Sound pressure display of virtual environment Level 4 sound pressure range at.

Claims

Used for vibration tests in which a specimen is vibrated with an external force that changes with time, measuring means that measures the vibration response of the specimen that changes with time, and machining that processes the measured vibration response of the specimen measured by this measuring means Means, transfer means for sequentially transferring the measured vibration response of the specimen measured by the measuring means to the processing means, and the vibration deformation behavior of the specimen sequentially based on the vibration response of the specimen processed by the processing means. In a vibration monitoring system comprising a display device for displaying,
A virtual environment dynamic model database, a virtual environment vibration response database when an external force is applied to the specimen, and a shape model database relating to the shape of the specimen and the virtual environment are connected to the processing means. The processing means uses a virtual environment dynamic model database to create a virtual environment vibration at the same time as the measurement time when the vibration response of the specimen is measured from the virtual environment vibration response database. A virtual environment vibration response defining means for capturing a response; a combining means for combining the measured vibration response of the specimen and the vibration response of the virtual environment captured by the defining means; a vibration response synthesized by the combining means; and Drawing means for drawing a vibration response of a virtual environment including a specimen from a shape model database, and the display device draws the drawing means. Monitoring system vibration test, characterized in that the image is sequential can be displayed.

The defining means for capturing the vibration response of the virtual environment uses the measured vibration response of the specimen measured by the measurement means to provide the vibration response of the virtual environment at the time when the vibration response of the specimen is measured. The vibration test monitoring system according to claim 1, wherein a numerical simulation is performed including a dynamic interaction between a specimen and a virtual environment .

The processing means further includes storage means, and the storage means stores the measured vibration response of the specimen and the vibration response of the virtual environment captured by the definition means in a referenceable vibration response data file. The vibration test monitoring system according to claim 1 .

The processing means further has a storage means, and the storage means stores the specimen created by the drawing means and the virtual environment vibration response drawing information in a referenceable image data file. The vibration test monitoring system according to claim 1, wherein:

2. The vibration test monitoring system according to claim 1, wherein the defining means converts the measured vibration response of the specimen according to a dynamic similarity law between the specimen and a virtual environment .

The vibration response database of the virtual environment stores the vibration response for the virtual environment, and the stored vibration response includes the time, the type of physical quantity of the vibration response, the direction component, the value of the physical quantity, and the virtual response. The vibration test monitoring system according to claim 1, further comprising position information of a typical environment .