JPH0241580A - Analysis program execution method - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] 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 relates to an analysis program execution method when each analysis program is executed. teeth,
This relates to an analysis program execution method in which the boundary values required for the execution are converted to data on the program calculation area before execution, and the program execution results are converted to data on the shape area. .

[Conventional technology]

Until now, the programs required to analyze the analysis target have been developed exclusively for each analysis item, but according to the latest CAE systems, program libraries and database management systems (DBM
S) makes continuous analysis possible in principle for the analysis target. When performing continuous analysis, the conversion of input and 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 are specified, analysis is basically possible using the functions of the DBMS, as shown in Japanese Patent Laid-Open No. 58-169265.

In addition, when the analysis content belongs to a nonlinear initial value problem,
Japanese Patent Laid-Open No. 165271/1983 discloses a technique for efficiently performing analysis after setting initial values for each decomposition region.

[Problem to be solved by the invention]

However, although continuous analysis is possible in principle in the case of JP-A No. 58-169265, it does not indicate how the analysis should be carried out specifically; In the case of Publication No. 165271, there is no disclosure about data conversion that enables combinational execution of programs.

As mentioned above, in order to perform complex analysis by combining various analysis programs, there is a function that automatically adjusts the input and output data of the combined programs, taking into account the differences in input and output data between each analysis program. The same consideration is not given to these issues. 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 convert data between each program. Not only does it require specialized knowledge for each program, but it also requires a lot of time.

An object of the present invention is to easily perform analysis without requiring specialized knowledge of each analysis program and without requiring much time when multiple analysis programs are combined according to the analysis purpose to perform complex analysis. The purpose of this invention is to provide an analysis program execution method that can be used.

[Means to solve the problem]

For the above purpose, the analysis programs to be combined are determined from the shape of the analysis target and executed sequentially, but when each analysis program is executed, the analysis programs are determined from the relationship between the shape area and the calculation area before the program execution. The data on the shape domain is converted into data on the calculation domain by the mapping, and the program execution result is achieved by being converted into the data on the shape domain by the inverse mapping determined in advance from the above relationship.

[Effect]

Before executing an analysis program, the boundary values or intermediate results on the shape area are determined from the shape region of the analysis target required for analysis and the information about the analysis program calculation region registered with the analysis program. A mapping for converting data on the calculation domain and, conversely, an inverse mapping for converting data on the calculation domain into data on the shape domain are determined in advance. Before executing an analysis program, the boundary values necessary to execute the analysis program are converted into data on the analysis program calculation domain by mapping, and the output results on the analysis program execution calculation domain are inversely mapped onto the shape domain. If processing such as conversion into data is performed for each analysis program, a plurality of analysis programs related to the combination can be automatically and consecutively executed.

〔Example〕

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

First, the CAE system according to the present invention will be explained.
FIGS. 2 and 3 each show an example of the hardware configuration and software configuration. As shown in FIG.
3, the disk device 18 via the disk controller 17
The central processing unit 13 also houses a main storage device 14, a display device 16, and a keyboard 15. This will cause keyboard 1
5 is stored in the main storage device 14 by the central processing unit 13 and displayed on the display device 16, and the data on the main storage device 14 is stored by the central processing unit 13 in the multipath 11, disk IIJ, etc.
Data is exchanged and transferred, such as being stored in a disk device 18 via a control device 17.

In addition, as shown in Figure 3, due to the software configuration, CAE
The system is composed of a control section 20, a human power section 22, an output section 24, a combination setting section 26, an execution section 28, a transformation mapping generation section 30, a data conversion section 32, and the like.

Now, to explain the case where the analysis program execution method according to the present invention is applied to plastic flow analysis of a molding die, the processing procedure is as shown in FIG. 1. When designing a molding die, the filling situation can be 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. (process 100). Thereafter, data such as molding conditions is input from the terminal 19, and this is similarly imported into the CAE system as data such as 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, but the combination is based on 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 abstractability. For example, Fig. 4(b)
As shown in , if the mold cavity shape is divided into three analyzable shape parts a, b, and c, shape parts a, c
By assigning analysis program A to the shape part and analysis program B to the shape part, the combinations of analysis programs are set as A, B, A, etc.
Process 104).

When the combination setting of the analysis program is completed in this way, the conversion map generation unit 30 generates a data conversion mapping between the shape domain and the calculation domain and its inverse mapping under the control of the control unit 20. The data conversion mapping and its mapping are required (processing 106) for the following reasons.

That is, FIG. 5 shows the concept of mapping and inverse mapping for the shape portion a of the mold cavity shapes shown in FIGS. 4(a) and 4(b). Although the shape part a is a rectangular parallelepiped, the analysis program A assigned to it performs analysis on a cylindrical model shape, and the amount of calculation is reduced by taking advantage of the symmetry in the radial direction. It has become. Therefore, as shown in Figure 5, since the shape region is a rectangular parallelepiped and the calculation region is a rectangle, a transformation mapping from the shape region to the calculation region and an inverse transformation mapping from the calculation region to the shape region are required. It is.

Now, when the generation of the mapping and inverse mapping is completed as described above, the data conversion section 32 uses the mapping under the control of the control section 20 to convert the data inputted as a boundary condition onto the shape region into the analysis program A. (processing 108). When this data conversion is completed, the control unit 20 starts the execution unit 28 to execute the analysis program A on the calculation domain, and the calculation result is transferred to the calculation domain. (process 110). When the execution of this analysis program A is completed, the data conversion unit 32 uses inverse mapping under the control of the control unit 20 to convert the results in the calculation domain to the shape domain (processing 112).

After that, the control unit 20 judges whether all the combined analysis programs have been executed (114), but in this example, the analysis programs B and A assigned to the shape parts A and C have not yet been executed. Therefore, the control unit 20 controls the conversion mapping generation unit 30. Commands are sequentially issued to the data conversion section 32 and the execution section 28, so that similar processing is performed.

Once all programs have finished running in this way,
Under the control of the control unit 20, the output unit 24 graphically displays the analysis results in the shape area on the terminal 19 (processing 116).

As described above, even if the analysis is complicated, it is possible to efficiently perform the analysis by sequentially executing the combined analysis programs.

〔Effect of the invention〕

As explained above, in order to automatically analyze the analysis target according to the combination of analysis programs, the input/output data of the program is converted into a format suitable for the program, so specialized knowledge of analysis programs is not required. Not only can analysis be performed by combining programs, but data conversion between analysis programs is also performed automatically.
The time required for analysis will be significantly reduced.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the flow of the processing procedure of the analysis program execution method according to the present invention, and FIGS. 2 and 3 are diagrams respectively showing the hardware configuration and software configuration of an example of the CAE system according to the present invention. , Figure 4(a),(b)
1 is a diagram showing the external appearance and cross section of a molding die as an example for explaining plastic flow analysis of a molding die, and FIG. 5 is a diagram showing a mapping and its inverse mapping as a concept related to the present invention. It is a figure for explaining the necessity of. 11... Multipath, 12... Bus control device, 13
...Central processing unit, 14...Main storage device, 15...
・Keyboard, 16...Display device, 17...
- Disk control device, 18... Disk device, 19.
...Terminal, 20...Control section, 22...Input section, 24
... Output unit, 26... Combination setting unit, 28... Execution unit, 30... Conversion mapping generation unit, 32... Data conversion unit. Agent Patent Attorney Tadashi Akimoto Business Diagram Diagram (a) Diagram

Claims (1)

[Claims] 1. An analysis program execution method when a plurality of analysis programs that are combined based on the shape of the analysis target are sequentially executed, and when each analysis program is executed,
Before program execution, data on the shape area is converted to data on the calculation domain by mapping determined from the relationship between the shape domain and the calculation domain, and the program execution result is converted into data on the shape domain by inverse mapping determined from the above relationship. An analysis program execution method characterized by converting data into data.