JPH02306373A - Post-processor for finite-element analysis - Google Patents

Abstract

PURPOSE:To display each analyzed result by a finite-element method about plural objects successively and alternately on a picture through small capacity and in addition, as switching them smoothly by providing one program area to switch and program-control plural data of each data area. CONSTITUTION:The program area 15 is provided with a reading part 16, a data managing part 17, a working parameter area 18, a processing (calculation) part 19 and a displaying work area 20, and reads in the data to identify the objects A, B analyzed by the finite-element method and the data of their analyzed results (a), (b), and stores the data of the objects A, B and the data of the analyzed results (a), (b) in the areas 11a, 11b and external files 21a, 21b respectively. Then, they are taken out by one program area, and each analyzed result is displayed on the picture. Accordingly, it becomes unnecessary to read the data of the object from an external part and store it every time display is changed. Thus, the display of the picture can be switched quickly, and one program area is enough, and storage capacity can be made small.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a finite element method post-processor for displaying on a screen an object analyzed by the finite element method using a computer and the analysis results.

<Prior art> When displaying the analysis results of multiple objects using the finite element method on a CRT screen and comparing the two analysis results, the CRT screen is divided into multiple sections and the analysis results of the multiple objects are displayed on a CRT screen. be displayed sequentially on each divided screen, or
It has been considered to alternately display the analysis results of a plurality of objects on the RT screen at any time to make it easier to compare the analysis results.

By the way, this kind of conventional finite element method post-processor has a memory 1 which stores data for specifying one object ^ analyzed by the finite element method, as shown in Fig. 9.
Some devices include one data area 1 and one program area 2 for programmatically controlling the data in the data area 1 in order to display on screen the analysis result a by the finite element method for the object A. In this case, the reading unit 3 of the program area 2 reads data for specifying the object and its analysis result a, and the data of the object A is transferred to the data area 1.
At the same time, the analysis result a is stored in the external file 4, and the operating functions of the data management section 5 and the processing section 6 in the program area 2 display the object A and the analysis result a on the CRT display device 7. It is displayed on the screen.

Additionally, other traditional finite element method post-processors include:
As shown in FIG. 10, there are a plurality of data areas 1a and lb each storing data for specifying a plurality of objects A and B analyzed by the finite element method, and each data area 1.
Some devices include a plurality of program areas 2a and 2b for program-controlling data a and lb, respectively.

In this case, the reading section 3a of each program area 2a, 2b.

3b, the data for specifying objects A and B analyzed by the finite element method and the data of the analysis results a and b are read, and the data of multiple objects ^ and B are transferred to another data area 1a. , lb, respectively, and the corresponding analysis results a and b are stored in the external file 4a.

4b, and each program area 2a, 2b.
The objects A and B and their analysis results a and b are CR
It is designed to be displayed on the CRT screen of the T display device 7.

<Problem to be solved by the invention> However, in the conventional method shown in FIG. 9, a plurality of objects A,
When displaying the analysis results a and b of object B on the CRT screen, first read the data of object A using the reading unit 3, and
and store it in the external file 4, and by the operation of the data management unit 5 and processing unit 6, the object ^ and its analysis result a are converted to C.
To display the analysis results for object B on the RT screen and then display the analysis results for object B, read the data for object B using the reading unit 3, and import the data in data area 1 and external file 4 into the data for object B. After changing to Object B, it is necessary to display the analysis results for object B on the CRT screen, and each time the object to be displayed on the CRT screen is changed, the data for the object must be read, and the display on the CRT screen has to be read. There was a problem in that it took time to switch, and analysis results for multiple objects could not be smoothly compared.

Moreover, in the conventional one shown in FIG. 10, a plurality of objects A, B
When displaying analysis results a and b sequentially on a CRT screen, data stored in each data area 1a, lb and external files 4a, 4b are displayed in respective program areas 2a, 2.
It is only necessary to perform program control on the CRT screen and display the data alternately on the CRT screen, and there is no need to read the data of the objects A and B using the reading sections 3a and 3b each time the display is changed, and the display on the CRT screen can be quickly switched. However, if multiple objects A
In addition to requiring multiple data areas corresponding to . .

In view of the above-mentioned problems, the present invention enables the analysis results of a plurality of objects by the finite element method to be sequentially and alternately displayed on the screen in a small capacity and smoothly switched.

<Means for solving the problem> The technical means of the present invention for solving this technical problem includes a plurality of data areas for storing data for specifying a plurality of objects analyzed by the finite element method; The present invention includes one program area for switching and program-controlling a plurality of data in each data area in order to sequentially display on screen the analysis results of the data in each data area using the finite element method.

<Example> Hereinafter, the present invention will be explained according to the illustrated example.
In the figure, lla and llb are multiple data areas,
Each data area 11a, llb stores respective data for specifying a plurality of objects A, B analyzed by the finite element method. Each data area 11a, llb has a parameter area 12a, 12b and a data table 13a, 1
3b.

The contents of the parameters in the parameter areas 12a and 12b include the start address and size of each data table 13a and 13b, various variables for plotting (screen size,
information on the scale of the drawing, the direction in which B is viewed, the color to be displayed), various state variables (whether to display as a line or plane, what to display, what number of results to display, etc.),
There is intermediate file information for analysis results a and b (where data such as variables is stored, what kind of information is stored in which position in the file, etc.).

In addition, the contents of the data for objects A and B include structural data (nodes, elements, etc.), analysis condition data (loads, restraints,
The data for the analysis result a, 1] may include the amount of deformation, stress, strain, etc.

Reference numeral 15 denotes a program area, which includes a reading section 16, a data management section 17, a working parameter area 18, a processing section 19, and a display working area 20. The data for specifying the objects A and B and the analysis results a and b are read in, and each data of the objects A and B is stored in the data area 11a.

11b, respectively, and data indicating analysis results a and b are stored in external files 21a and 21b corresponding to each data area 11a and llb, respectively. In addition, the data area 11a and the external file 21a
or the data stored in the data area 11b and the external file 21b, and transfer this data to the CR.
The object is converted into data to be displayed on the CRT screen 23 of the T display device 22, and the object and its analysis results are displayed on the CRT screen 23. By sequentially and alternately extracting the data in the data area 11a and external file 21a and the data in the data area 11b and external file 1b, the CRT screen 23 is divided as shown in FIG. 5 or 6, for example. , or without dividing the CRT screen 23 as shown in FIG. 7 or 8, the object A and its analysis result a on the data area 11a side, and the object B and its analysis result on the data area 11b side. It is possible to switch between the two modes and display them alternately.

The CRT screen 23 displays deformation diagrams, stress and strain distribution diagrams, stress and strain vector diagrams,
There are graph displays, etc.

The reading unit 16 reads the output results of the finite element method program and stores data for specifying objects A and +3 analyzed by the finite element method in the data area 11a.

11h to create a data table, and the data of analysis results a and b analyzed by the finite element method are stored in external files 21a and 21b.

The data management unit 17 secures and deletes the parameter areas 12a and 12b of each data area 1ja and llb, and also secures and deletes the parameter areas 12a and 12b of each data area 11a and llb.
, 13h are secured and deleted. Furthermore, data area 11
a. Switch the data of llb.

The work parameter area 18 is where data for the current work is entered.

The processing unit 19 is a part that performs calculation processing for displaying the analysis results on the CRT screen 23, and calculates, for example, the amount of deformation, stress, and screen coordinates for display on the screen.

Next, for example, as shown in Figures 5 to 8, the amount of deformation when stress is applied in the direction of the arrow to the objects ^ and B is analyzed using the finite element method, and the analysis results are a, The operation will be explained using the case of b as an example.

First, data of object A and analysis result a is stored in data area 1.
1a and the external file 21a will be described with reference to the flowchart shown in FIG. 2. In step (2), it is determined whether the data area 11a is secured or not.

If the data area 11a is not secured, step
In step 2, the parameter area 12a of the data area 11a is secured, and in step 2, the data table 13a of the data area 11a is secured, and in step 2, the parameters and data values of the secured parameter area 12a and data table 13a are initialized. become For example, all parameters,
Set the data value to 0.

When the data area 11a is secured, the data is switched in step (2). This data switching is performed according to the procedure shown in the flowchart of FIG.

In other words, as shown in FIG.
Evacuate to 2b etc. Thereafter, in step O, the parameters in the working parameter area 18 are erased. Step @
Then, the parameters of the data to be switched in the data area 11a, which were initialized in step (2), are taken out from the parameter area 12a to the working parameter area 18. As a result, the parameters initialized in step (2) are entered into the working parameter area 18, and the working parameter area 18 is initialized. Then, in step @, the parameters in the work parameter area 18 are changed to match the current work environment, thereby setting the parameters.

When the data switching is completed in step (2), it is determined in step (2) whether other data is contained in the working parameter area 18. If other data is included, in step
Delete the data of a.

When the working parameter area 18 contains no other data, the reading section 16 reads the data of the object Δ and the analysis result a in step (3).

In step (2), the analysis result a is recorded in the external file 21a, thereby creating an analysis result intermediate file.

In addition, in step [phase], data for screen display is created from the data for the object, that is, data in which the actual data is replaced with the coordinates of the CRT screen, and the data is transferred to the data area 11a.
is stored in the data table 13a.

In step (2), parameters indicating the degree of scale, color, etc. to be displayed on the screen are created and stored in the parameter area 12a, thereby setting the parameters.

Further, the reading operation of the data of the object B and its analysis result is performed in the same way as the reading operation of the object A and its analysis result a, and the data corresponding to the object B is stored in the data area 11.
At the same time, data corresponding to the analysis result is stored in the external file 21b.

Next, data area 11a, llb and external file 2
1a.

The operation for displaying objects A and B and their analysis results a and b stored in 21b on the screen will be described with reference to the flowchart in FIG.

At step (2), it is determined whether or not the CR7 screen 23 is divided. If the screen 23 is not divided as shown in FIG. 7 or 8, the process goes to step @.

If the screen 23 is divided as shown in FIG. 5 or 6, in step 0, it is determined whether or not to display on the current screen (on the left or right side of the divided screen). If you want to determine it and display it on the current screen, go to step @. If it is not displayed on the current screen, switch the display screen to another divided screen in step ①. This specifies the display position of the CR7 screen 23 to be displayed.

Then, in step [phase], the working parameter area 18
It is determined whether or not to display the current data, and if the current data is to be displayed, go to step [phase]; if not, the data is switched in step (2). This data switching is performed in the same manner as described above, according to the procedure shown in the flowchart of FIG.

That is, as shown in FIG. 4, for example, from a state where the object 8 and its analysis results stored in the data area 11b and the external file 21b are displayed on the screen 23, the data stored in the data area 11a and the external file 21a are displayed. When switching to display the object A and its analysis result a on the screen 23, in step 0, the work parameter area 18
The parameters of the data related to the current object B are saved in the parameter area 12b of the data frM 3A11 )).

Thereafter, in step 0, the parameters in the working parameter area 18 are erased. In step ■, the data area 11a
The parameters of the data regarding the target object are taken out from the parameter area 12a to the working parameter area 18. In step @, the parameters in the work parameter area 18 are changed to match the current work environment. As a result, the parameters are set, and the object ^ and its analysis result a can be displayed at the specified position on the CR7 screen 23.

In step (2), the processing unit 19 calculates the plotting scale, direction, etc. using the data of the object A in the work parameter area 18, so that the object A can be displayed as a diagram on the CR7 screen 23. . Further, in step (2), the data of the analysis result a of the external file 21a is read into the display work area 20, and the processing unit 19 calculates the data to be displayed on the screen 23, and in step (2), the object A and its analysis result a are The information is displayed graphically on the CR7 screen 23 as shown in FIGS. 5 to 8.

Then, by switching the data in step (3), the data in the data area 11a and the data area 111) and the external file 21a are sequentially taken out to the program area 15 side and displayed in the program area 15. CR
The display on the T screen 23 can be changed to
The display on the screen 23 can be easily and quickly switched between the object B and its analysis results by alternating between the two figures.

In the above embodiment, two data areas 11a and llb are provided, but the number of data areas is not limited to this, and when there are three or more objects to be analyzed by the finite element method, it is possible to Correspondingly, three or more data areas may be provided, and three or more external files may also be provided.

<Effects of the Invention> According to the present invention, there are a plurality of data areas for storing data for specifying a plurality of objects analyzed by the finite element method, and analysis results of the data in each data area by the finite element method. Since it is equipped with one program area that performs program control by switching multiple data in each data area in order to display the data sequentially on the screen, when multiple analysis results for multiple objects are displayed on the screen, multiple data data for different objects is stored in multiple data areas, data for different objects is sequentially retrieved from these multiple data areas by one program area, and each analysis result for the multiple objects is displayed on the screen. Therefore, it is not necessary to read and store the data of the object from the slide every time the display is changed, and the display on the screen can be quickly changed. Furthermore, only one area is required for the progera 1 having a reading section, a processing section, etc., and the storage capacity can be minimized, which has a significant effect.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing one embodiment of the present invention, FIGS. 2 to 4 are flowcharts for explaining the operation, and FIGS. 5 to 8 are front views of CRT screens. FIG. 9 is a block diagram showing a conventional example, and FIG. 10 is a block diagram showing another conventional example. 11a, llb...data area, 15...program area. -58: Figure 5A Figure 6

Claims (1)

[Claims] (1) Multiple data areas for storing data for specifying multiple objects analyzed by the finite element method, and each A post-processor for finite element analysis, comprising: one program area for program-controlling a plurality of pieces of data in the data area.