JP2527217B2 - Analysis program execution method - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an analysis program execution method when an analysis target is analyzed by a plurality of combined analysis programs, and particularly when each analysis program is executed. Relates to a method of executing an analysis program in which the boundary values required for the execution are converted into data in the program calculation area before the execution, and the program execution results are converted into data in the shape area. Is.

[Conventional technology]

Until now, the program required to analyze the analysis target has been developed for each analysis item, but according to the latest CAE system, the program library and database management system (DBMS)
In principle, continuous analysis is possible for the analysis target. When performing continuous analysis, the conversion of input / output data required for the analysis is performed by the analyst while determining the meaning and structure of the data. If the meaning and structure of the data is specified, as shown in Japanese Patent Laid-Open No. 169265/1983, basically, the function of the DBMS enables analysis.

Further, when the analysis contents belong to a non-linear initial value problem, the method disclosed in JP-A-62-165271 is known for efficiently performing the analysis by setting the initial value for each decomposition area. Has been.

[Problems to be Solved by the Invention]

However, in the case of JP-A-58-169265, continuous analysis is possible in principle, but it is not shown how the analysis is specifically carried out. In the case of Japanese Patent No. -165271, no data conversion is shown which enables combination execution of programs.

As described above, the function that automatically adjusts the input / output data of the combined program in consideration of the difference in the input / output data of each analysis program so as to perform complicated analysis by combining various analysis programs. No consideration has been given to the above. Therefore,
When analyzing a problem that cannot be solved without combining multiple programs, the operator must understand the input / output information of each program and then convert the data between the programs. Not only does it require expertise, it is also time consuming.

An object of the present invention is to easily analyze an analysis program without requiring specialized knowledge for each analysis program and a lot of time when a plurality of analysis programs are combined according to the analysis purpose to perform a complicated analysis. It provides a method of executing an analysis program that can be performed.

[Means for solving the problem]

The above-mentioned purpose is executed sequentially after the analysis program to be combined is determined from the shape of the analysis target, but when each analysis program is executed, it is obtained from the relationship between the shape area and the calculation area before executing the program. The data on the shape region is converted into the data on the calculation region by the mapping described above, and the program execution result is converted into the data on the shape region by the inverse mapping previously obtained from the above relationship.

[Action]

When executing the analysis program, the boundary value or the intermediate result on the shape area is calculated from the shape area of the analysis target required for the analysis before the execution and the information on the analysis program calculation area registered with the analysis program. A map for converting data in the calculation area and, conversely, a reverse mapping for converting data in the calculation area into data in the shape area are obtained in advance. Before executing the analysis program, the boundary values necessary for executing the analysis program are converted into data on the analysis program calculation area by mapping, and the output result on the analysis program execution calculation area is converted by the inverse mapping on the shape area. In the case where the processing such as conversion into data is performed for each analysis program, a plurality of analysis programs related to the combination can be automatically continuously executed.

〔Example〕

 The present invention will be described below with reference to FIGS. 1 to 5.

First, the CAE system according to the present invention will be described. FIG. 2 and FIG. 3 respectively show the hardware configuration and the software configuration thereof as an example. As shown in FIG. 2, in the CAE system, the multi-bus 11 under the control of the bus control unit 12 is connected to the central processing unit 13 and the disk unit 18 via the disk control unit 17, The central processing unit 13 also contains a main storage device 14, a display device 16 and a keyboard 15. As a result, the data input from the keyboard 15 is stored in the main memory 14 by the central processing unit 13 and, at the same time, is displayed on the display unit 16 and the data on the main memory 14 is processed by the central processing unit 13 in the multi-bus 11. Data is transferred and received by being stored in the disk device 18 via the disk control device 17.

Moreover, as shown in FIG.
The system includes a control unit 20, an input unit 22, an output unit 24, a combination setting unit 26, an execution unit 28, a conversion mapping generation unit 30, a data conversion unit 32, and the like.

Now, taking as an example the case where the analysis program execution method according to the present invention is applied to the plastic flow analysis of a molding die, the processing procedure is as shown in FIG. When designing a molding die, the filling condition is evaluated by analyzing the flow state of the plastic during molding in advance.

In the flow analysis, first, the shape of the molded product shown in FIG. 4 (a), that is, the shape of the mold cavity, which is input from the terminal 19 by the analyst, is controlled by the control unit 20 under the control of the input unit 22.
It is designed to be taken into the CAE system via (process 100). After that, the data such as the molding conditions is input from the terminal 19, which is also taken in the CAE system as the data such as the molding conditions (process 102). When these inputs are completed, a combination of analysis programs is generated in the combination setting section 26 under the control of the control section 20, and the combination is the shape of the mold cavity and the analysis program registered in advance in the disk device 18. It is designed to be generated based on the evaluation results of the applicability of and. For example, as shown in FIG. 4 (b), if the mold cavity shape is divided into three shape parts a, b, c that can be analyzed, the analysis program A is applied to the shape parts a, c.
By assigning the analysis program B to the shape portion b, the analysis program combination is set to A, B, A (step 104). When the combination setting of the analysis programs is completed in this way, the conversion mapping generation unit 30 is controlled by the control unit 20 to generate the data conversion mapping between the shape region and the calculation region and its inverse mapping. (Process 106). The reason why the data conversion map and its inverse map are required is as follows.

That is, FIG. 5 shows the concept of mapping and inverse mapping of the shape part a in the mold cavity shape shown in FIGS. 4 (a) and 4 (b). Although the shape part a is a rectangular parallelepiped, the analysis program A assigned thereto analyzes the cylindrical model shape, and the calculation amount is reduced by utilizing the radial symmetry. Has become. Therefore, as shown in FIG. 5, since the shape area is a rectangular parallelepiped and the calculation area is a rectangle, a transformation mapping from the shape area to the calculation area and an inverse transformation mapping from the calculation area to the shape area are required. Is.

Now, when the generation of the mapping and the inverse mapping is completed as described above, under the control of the control unit 20, the data conversion unit 32 uses the mapping to convert the data input as the boundary condition on the shape region into the analysis program A. When the data conversion is completed, the control unit 20 activates the execution unit 28 to execute the analysis program A on the calculation area, and the calculation result is calculated on the calculation area. Is output to (process 110). When the execution of the analysis program A is completed, the result in the calculation area is converted into the shape area by using the inverse mapping in the data conversion section 32 under the control of the control section 20 (processing. 112).

Thereafter, the control unit 20 determines whether or not all the combined analysis programs have been executed (114), but in the case of this example, the analysis programs B and A assigned to the shape parts b and c are still executed. Since it is not, the conversion mapping generator from the controller 20
30, commands are sequentially issued to the data conversion unit 32 and the execution unit 28,
Similar processing is performed.

When the execution of all the programs is completed in this manner, the analysis result in the shape area is graphically displayed on the terminal 19 by the output unit 24 under the control of the control unit 20 (process 116).

As described above, even a complicated analysis can be efficiently performed by sequentially executing the combined analysis programs.

〔The invention's effect〕

As explained above, since the input / output data of the program is converted into a form suitable for the program in order to automatically analyze the analysis target according to the combination of the analysis programs, no complicated knowledge is required for the analysis program. Not only can various analyzes be performed with a combination of programs, but data conversion between analysis programs is also performed automatically.
The time required for analysis will be greatly reduced.

[Brief description of drawings]

FIG. 1 is a diagram showing a flow of a processing procedure of an analysis program executing method according to the present invention, and FIGS. 2 and 3 are diagrams showing a hardware configuration and a software configuration respectively in an example of a CAE system according to the present invention. , (A) and (b) of FIG.
FIG. 1 is a diagram showing the appearance and cross section of the mold in one example for explaining the plastic flow analysis of the mold for molding, and FIG. 5 is a diagram showing the concept of the present invention and the need for the reverse mapping. It is a figure for explaining sex. 11 …… Multi-bus, 12 …… Bus controller, 13 …… Central processing unit, 14 …… Main memory, 15 …… Keyboard, 16 ……
Display device, 17 ... Disk control device, 18 ... Disk device, 19 ... Terminal, 20 ... Control unit, 22 ... Input unit, 24 ... Output unit, 26 ... Combination setting unit, 28 ... Execution Section, 30 ... conversion mapping generation section, 32 ... data conversion section.

Claims (1)

(57) [Claims] 1. A method for executing an analysis program when a plurality of analysis programs to be combined are determined from the shape of an analysis target and sequentially executed, each time the analysis program is executed, Prior to the execution, after the mapping and the inverse mapping are generated from the relationship between the shape region and the calculation region, the data input as the boundary condition on the shape region by the mapping is converted into the data on the calculation region. Above,
An analysis program execution method, wherein the analysis program is executed for the first time, and the execution result by the analysis program is converted into data on a shape region by the inverse mapping.