JP2001290846A - Cae analysis system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable even a field designer who does not have a technical knowledge of CAE analysis to easily perform the CAE analysis. SOLUTION: This CAE analysis system stored with an interactive application program where an object product of CAE analysis is prescribed is provided with an interface means 5 which replaces a design procedure inputted according to a design information input image and passes it to a CAE procedure file storage means 6 between an input image display means 3 which displays the design information input image for the object product according to a field operation procedure stored in a field operation procedure file storage means 1 and the CAE procedure file storage means 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the field of product analysis and design by a computer, for example, structural analysis, flow analysis such as air flow in a room or air along a vehicle body, and injection molding in a mold. The present invention relates to a CAE analysis system suitable for analysis such as flow analysis of resin and a design field.

[0002]

2. Description of the Related Art When CAE analysis technology is used in the design of various products, analysis specialists have conventionally performed complicated strength calculations and the like to design products. That is, CA
Since E-analysis is based on the physical laws expressed by differential equations, it requires users to understand differential equations and the mathematical promises that are necessarily required for numerical analysis. However, CAE analysis could not be easily performed.

Incidentally, a technique for improving operability in various analyzes other than the CAE analysis has been proposed (for example, see Japanese Patent Application Laid-Open No. 10-303267).
The technique disclosed in this publication stores and stores an analysis operation procedure, and automatically performs analysis based on the stored contents. This eliminates the trouble of repeating the same operation procedure every time analysis is performed, thereby improving the operability of analysis.

[0004]

However, even in this prior art, since the first operation procedure must be performed as before, even if this is applied to CAE analysis,
Aside from the second time, there was a problem that the system was not easily usable from the beginning.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and its object is to provide a CAE that enables even a field designer who does not have specialized knowledge of CAE analysis to easily perform CAE analysis from the beginning. An analysis system is provided.

[0006]

In order to solve the above problems, a CAE analysis system according to the present invention is used in a CAE analysis system in which an interactive application program that defines a product to be subjected to CAE analysis is stored. Field work procedure storage means for storing field work procedures described in terms of words, and an input screen display for displaying a design information input screen of a target product based on the field work procedures stored in the field work procedure storage means Means, input means used for inputting necessary information to input items in a design information input screen displayed on the input screen display means, and CA storing a CAE procedure necessary for analyzing a target product.
E procedure storage means, CAE analysis means which operates in accordance with a command instructed by the CAE procedure storage means, and a design procedure input in accordance with a design information input screen displayed on the input screen display means being replaced by a CAE procedure. CAE
And interface means for transferring to the procedure storage means.

According to the present invention having such features,
The site designer simply inputs necessary information for the input items according to the design information input screen displayed according to the site work procedure described in the words used at the site, and this design information is transmitted through the interface means. It is replaced by the CAE procedure, passed to the CAE procedure storage means, and
The analysis means (CAE engine) is activated, and the CAE analysis is performed. In other words, the on-site designer can input design information in the language commonly used according to the daily design process, and can easily design the product to be designed from the beginning even without specialized knowledge of CAE analysis. CAE analysis can be performed.

The CAE analysis system according to the present invention may further comprise a design know-how storing means for storing design know-how relating to a product to be designed in an interactive manner in the above-mentioned configuration, and wherein the input screen display means stores the design know-how. The design know-how stored in the means is also provided so as to be displayed.

According to the present invention having such features,
When entering necessary information according to the design information input screen,
Since information (design know-how) necessary for the input can be displayed on the screen, it is possible to perform a desired product design even if the user is not an expert in product design. This means
This suggests that the system could be used as a work standard tool, not just a CAE navigator.

The CAE analysis system according to the present invention is characterized in that, in each of the above-described configurations, the interface means is described in HTML.

According to the present invention having such features,
It is possible to create the next input screen or description necessary for the hypertext, such as various pictures and photographs, so that the designer can easily understand it.

Note that the description format is not limited to HTML alone, and it is obvious that the description format can be described by other XMT.

[0013]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a conceptual configuration diagram of a CAE analysis system according to the present invention.

This analysis system stores a field work procedure file storage means 1 storing field work procedure files described in terms used in the field, and a design know-how file related to a product to be designed interactively. Based on the design know-how file storage means 2 and the on-site work procedure stored in the on-site work procedure file storage means 1, a design information input screen of the target product is displayed, and the design know-how stored in the design know-how file storage means 2 is displayed. Input means (mouse, keyboard, etc.) 4 used when inputting information necessary for input items in the design information input screen displayed on the input screen display means 3. CAE procedure file storage means 6 storing a CAE procedure file necessary for analyzing the target product
CAE analysis means (CAE engine (PAT) which operates (generates an analysis model, mesh, boundary conditions, etc.) in accordance with the instruction specified by the CAE procedure file storage means 6
RAN)) 7, and an interface means (HTML processing means) 5 which replaces the design procedure input in accordance with the design information input screen displayed on the input screen display means 3 with the CAE procedure and transfers it to the CAE procedure file storage means 6. And a part for creating INPUT data for analysis (this is called a program (1)), and a part for reading the analysis result and processing the result based on a CAE procedure file (this is called a program (2)). Contains. Further, in the present embodiment, in order to generalize the CAE analysis system, a CAD (Pro
/ Engineer, I-Ders, Unigraph,
SolidWorks, etc.), well-known software such as MSC / NASTRAN, ABAQUS, ANSYS,
It includes a part such as STARCD that can handle all solvers supported by PATRAN.

The CAE analysis system according to the present invention comprises an input screen display means 3 for displaying a design information input screen of a target product in accordance with a field work procedure stored in a field work procedure file storage means 1, and a CAE procedure file storage means 6. And the design procedure input according to the design information input screen
It is characterized in that the interface means 5 for transferring to the CAE procedure file storage means 6 instead of the AE procedure is provided. Thus, the on-site designer can input the design information in the language commonly used in accordance with the daily design process, so that the CAE analysis of the product to be designed can be performed without specialized knowledge of CAE analysis. Is what you can do.

Next, a procedure of a design analysis process in the CAE analysis system having the above configuration will be described.

When the CAE analysis system is activated and the software is started, first, an initial menu screen 20 shown in FIG. Then, when the switch of new creation is pressed, an input screen as shown in FIG. 3 (in this example, the input screen 30 of the buried pipe) is displayed on the input screen display means 3. become. Thereafter, such an input screen continues, and the screens are sequentially displayed according to the story of the designer. The display order at this time is in accordance with the instructions in the on-site work procedure file used by the designer on site.

There is a large window 32 below the input screen 30 in FIG. 3, which is called a dialog. In this dialog, the designer is instructed to perform necessary operations and calls up the next necessary input screen or explanatory text in hypertext. This part is H in this embodiment.
It is described in TML, and it is possible to create various pictures and photographs so that the designer can easily understand them. While such an operation of the input screen 30 is being performed, design know-how is automatically read out from the design know-how file storage means 2 using HTML when necessary, and displayed on the screen. FIG. 4 shows a display screen example of the design know-how read out from the design know-how file storage means 2. The setting of the scene for displaying the design know-how presupposes that the designer using the present system is not necessarily an expert in product design.
The design know-how screen shown in FIG. 4 corresponds to a material property input screen 80 in FIG. 9 described later.

The designer designs the product through the input screen while referring to such automatically displayed design know-how as needed. However, regarding the display of the design know-how, the designer
Design know-how file storage means 2 for the design know-how you want to see
May be set so that it can be read out from and displayed.

The design procedure sequentially input as described above is replaced by a CAE procedure by the interface means (HTML processing means) 5. This CAE setting procedure is a procedure created by a CAE expert, and is a procedure consistent with the experiment. The CAE engine 7 operates according to the CAE procedure file, and necessary shape models, meshes, and boundary conditions are automatically generated.

Then, INPUT data required by the program (1) is automatically generated from the generated data, and the data can be automatically passed to the analysis program for analysis. And when the analysis is over,
The analysis result is automatically processed by the above program (2), and is automatically converted into a viewable form such as a table or a graph.

At this time, if necessary, it is possible to open the design know-how file stored in the design know-how file storage means 2 and make a judgment by comparing it with past cases. In this case, if the level of skill of the operating designer is lower than the level of the set site worker, necessary design information (design know-how information) is displayed, so that even an inexperienced designer can An analysis operation can be performed by supplementing this design information. This design information can be displayed when necessary by pressing a button for opening the design know-how displayed on each input screen.

[0024]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a pressure receiving plate will be described as a specific example of a product to be designed, and a processing procedure of design analysis in the CAE analysis system of the present invention will be described. 5 to 10 show examples of the input screen of the pressure receiving plate, and FIGS. 11 and 12 show examples of the result display screen.

First, when the CAE analysis system is activated and the software is activated, the stored application program is activated and an initial menu screen 20 as shown in FIG. 2 is displayed. A necessary design program is selected from the initial menu screen 20. As a result, the screen of the input screen display means 3 is displayed as shown in FIG.
Is displayed as shown in FIG.

The shape type input screen 40 is a step display box 4 for displaying up to which stage the input has been completed.
1, a dialog box 42 for interactively selecting the type of the pressure receiving plate to be analyzed, a type input box 43 for inputting the type of the pressure receiving plate displayed in the dialog box 42, and "Application"
, And a return button box 45 in which “return” is written to return to the previous screen (initial menu screen).

Since such an input screen is displayed on the screen of the input screen display means 3, the designer can select one of the two types of pressure receiving plate types graphically displayed in the dialog box 42 of the shape type input screen 40. Then, the type of the pressure receiving plate to be analyzed this time is selected, and the selected number is input to the type input box 43. Thus, a dimension input screen 50 shown in FIG. 6 is displayed on the screen of the input screen display means 3.

The dimension input screen 50 shown in FIG. 6 includes a step display box 51 for displaying up to which stage the input has been completed, and a condition for inputting the dimensions of the pressure receiving plate selected on the shape type input screen 40 in an interactive format. Dialog box 52 to be displayed, and a dimension input box 53 for inputting the dimensions of each part according to the conditions displayed in the dialog box 52
And an apply button box 54 in which "apply" is entered for fixing the input content, and a return button box 55 in which "return" is entered for returning to the previous screen (shape type input screen 40). It is configured.

Since such an input screen is displayed on the screen of the input screen display means 3, the designer operates the numeric keypad of the keyboard according to the input conditions displayed in the dialog display box 52 of the dimension input screen 50. Enter the size of the first plate, the size of the plate on the second stage, the size of the pressure receiving head, and the diameter of the bolt in the dimension input box 53 using Click 54 with the mouse. As a result, the following constraint condition input screen 60 shown in FIG. 7 is displayed on the screen of the input screen display means 3.

A constraint condition input screen 60 shown in FIG. 7 includes a step display box 61 for displaying up to which stage the input has been completed, a dialog box 62 for interactively displaying a constraint condition input procedure, and a dialog box. 62
Condition input box 63 for inputting a constraint condition in accordance with the procedure displayed in “(1)” and “Apply” for confirming the input content.
And a return button box 65 in which "return" is written to return to the previous screen (dimension input screen 50).

Since such an input screen is displayed on the screen of the input screen display means 3, the designer operates the numeric keypad of the keyboard in accordance with the contents displayed in the dialog display box 62 of the constraint condition input screen 60. The maximum measured anchor force is input to the condition input box 63 by using the function keys or function keys, and then the application button box 64 is clicked on with a mouse. As a result, a dimension input screen 70 shown in FIG. 8 is displayed on the screen of the input screen display means 3.

The dimension input screen 70 shown in FIG. 8 includes a step display box 71 for displaying up to which stage the input has been completed, and a condition for inputting the dimensions of the pressure receiving plate selected on the shape type input screen 40 in an interactive format. And a thickness input box 73 for inputting the thickness of each layer according to the conditions displayed in the dialog box 72.
And an apply button box 74 in which "apply" is entered for fixing the input contents, and a return button box 75 in which "return" is entered for returning to the previous screen (restriction condition input screen 60). It is configured.

Since such an input screen is displayed on the screen of the input screen display means 3, the designer follows the contents displayed in the dialog box 72 of the dimension input screen 70 by using the numeric keys and function keys on the keyboard. Using the keys or the like, enter the thicknesses of the first and second plates in the dimension input box 73, and then,
4. Click 4 with the mouse. As a result, the screen of the input screen display means 3 has a material property input screen 8 shown in FIG.
0 is displayed.

The material property input screen 80 shown in FIG. 9 includes a step display box 81 for displaying up to which stage the input has been completed, a dialog box 82 for interactively displaying the input procedure of the material properties, and a dialog box. 82
In the physical property input box 83 for inputting material physical properties in accordance with the procedure displayed in the above section, and "Apply" for confirming the input contents.
, And a return button box 85 in which “return” is written to return to the previous screen (dimension input screen 70). Also,
The physical property input box 83 includes a material name input box 831 for inputting a material name, an elastic coefficient input box 832 for inputting three-dimensional elastic coefficients, and a Poisson ratio input box 833 for inputting three-dimensional Poisson ratios. And shear coefficient input box 8 for inputting each shear coefficient in three-dimensional directions
34, and a direction input box 835 for inputting the direction of stacking of the first and second layers.

Since such an input screen is displayed on the screen of the input screen display means 3, the designer operates various keys on the keyboard in accordance with the contents displayed in the dialog box 842 of the material property input screen 80. Is used to input a material name in a material name input box 831 of the physical property input box 83, and a three-dimensional (X,
Each elastic coefficient in the (Y, Z) direction is input, each Poisson ratio in the three-dimensional (X, Y, Z) direction is input into the Poisson ratio input box 833, and three-dimensional (X, Y, Z) is input into the shear coefficient input box 834. Z) Enter each shear coefficient in the direction, and finally click the Apply button box 84 with the mouse. As a result, a final confirmation screen 90 of various data shown in FIG. 10 is displayed on the screen of the input screen display unit 3. In addition,
At this time, although illustration is omitted, if a part of “Click here to open a design know-how file” displayed in the dialog box 82 is clicked, a design know-how screen shown in FIG. 4 is displayed. Is displayed, the designer can make an input to each of the input boxes 831 to 834 with reference to the design know-how written on this design know-how screen.

FIG. 10 shows a final confirmation screen 9 for various data and the like input according to the above-mentioned input screens (FIGS. 5 to 9).
0 is shown. The final confirmation screen 90 includes a step display box 91 for displaying up to which stage input has been completed, a dialog box 92 for displaying final confirmation of various input data in an interactive manner, and a dialog box 92.
A selection box 93 for selecting the next step according to the content displayed in the "?" And "Apply" for confirming the selected content.
, And a return button box 95 in which "return" is written to return to the previous screen (restriction condition input screen 80).

Since such an input screen is displayed on the screen of the input screen display means 3, the designer can determine whether to create an input file in accordance with the contents displayed in the dialog box 92 of the final confirmation screen 90. Select either to create an input file and execute the analysis or to cancel this step and select the selection in the selection box 93
And click the apply button box 94 with the mouse.

As described above, the input of all the conditions necessary for the analysis of the pressure receiving plate is completed. Therefore, the CAE procedure file storage means 6 follows the input instruction and, for example, if the instruction is to execute the analysis, the CAE engine 7 It starts up and executes the calculation processing of the analysis.

FIGS. 11 and 12 show examples of analysis result display screens showing the results of analysis based on various data and the like input in accordance with the above-described input screens (FIGS. 5 to 10). I have. The analysis result display screen 100 includes a step display box 101 for displaying up to which stage the input has been completed, a dialog box 102 for interactively displaying the type of analysis result to be displayed, and a dialog box 102 for displaying. A type input box 103 for selecting and inputting the type of analysis result to be displayed from the types of analysis results, an apply button box 104 in which "Apply" is entered for confirming the input content, a previous screen (final confirmation screen) 90), and a return button box 105 in which "return" is written. In addition, on the right display screen, the analysis result of the selected type is displayed in a contour diagram. FIG. 11 is a contour diagram of the analysis result of the maximum principal distortion. FIG. 12 is similar to FIG.
3 shows a state in which the contour diagram of the analysis result of the transition is superimposed and displayed on the contour diagram of the analysis result of the maximum principal distortion shown in FIG.

As described above, in the CAE analysis system of the present invention, the data of the inquiry (an example of an input screen) displayed on the input screen display means 3 is displayed in accordance with the instruction of the site work procedure file used by the designer at the site. CA
Even those who do not have specialized knowledge of E can easily and reliably use CA
E analysis can be performed.

Although only a part of the above processing procedure has been described, in the operation process of inputting various conditions on the input screen displayed on the input screen display means 3, design know-how is required in necessary situations. Is read from the design know-how file storage means 2 and displayed on the screen. In this embodiment, the shape type input screen 40 and the dimension input screen 5
0, 70, constraint condition input screen 60, material property input screen 8
0, a design know-how file is prepared and stored in the design know-how file storage means 2. In this way, by displaying the design know-how screen as needed, even a designer who is not skilled in product design can see the design know-how written on the design know-how screen and proceed with analysis. I can go. Thus, analysis can be supported for a designer who is not skilled in product design. When the design know-how screen is opened, as described above, the dialog box 3 of each input screen is opened.
A text such as "Click here to open a design know-how file" is written in 2, 42, 52, 63, 72, 82, and the designer clicks here. A design know-how screen is displayed.

[0042]

According to the CAE analysis system of the present invention,
The site designer simply enters necessary information in the input items according to the design information input screen displayed according to the site work procedure described in the language used on site, and CA
An E-analysis can be performed. In other words, the on-site designer can input design information in the language commonly used according to the daily design process, and can easily design the product to be designed from the beginning even without specialized knowledge of CAE analysis. CAE analysis can be performed. In addition, since a design know-how screen is displayed when necessary, even a designer who is not skilled in product design can proceed with analysis.

[Brief description of the drawings]

FIG. 1 is a conceptual configuration diagram of a CAE analysis system of the present invention.

FIG. 2 is an explanatory diagram showing an example of an initial menu screen displayed on input screen display means.

FIGS. 3A and 3B are explanatory diagrams showing an example of a shape data input screen (an example of a basic structure selection screen).

FIG. 4 is an explanatory diagram showing an example of a design know-how screen displayed on an input screen display means.

FIG. 5 is an explanatory diagram showing an example of a shape type input screen displayed on the input screen display means.

FIG. 6 is an explanatory diagram showing an example of a dimension input screen displayed on the input screen display means.

FIG. 7 is an explanatory diagram showing an example of a constraint condition input screen displayed on the input screen display means.

FIG. 8 is an explanatory diagram showing an example of a dimension input screen displayed on the input screen display means.

FIG. 9 is an explanatory diagram showing an example of a material property input screen displayed on the input screen display means.

FIG. 10 is an explanatory diagram showing an example of a final confirmation screen displayed on the input screen display means.

FIG. 11 is an explanatory diagram showing an example of an analysis result display screen showing an analysis result displayed on the input screen display means.

FIG. 12 is an explanatory diagram showing an example of an analysis result display screen showing the analysis result displayed on the input screen display means.

[Explanation of symbols]

 1 On-site work procedure file storage means 2 Design know-how file storage means 3 Input screen display means 4 Input means 5 Interface means (HTML processing means) 6 CAE procedure file storage means

 ────────────────────────────────────────────────── ─── Continued on the front page F term (reference) 5B046 AA05 DA02 GA01 HA05 JA08 JA09 KA05 5E501 AA01 AC09 AC37 BA05 BA13 CA02 CB02 CB09 CC17 EA02 EA05 EA10 EB05 FA05 FA06 FA08 FA13 FA14 FA43

Claims (3)

[Claims] A CAE analysis system in which an interactive application program defining a product to be subjected to CAE analysis is stored, wherein a site work procedure storage means for storing field work procedures described in words used in the field, An input screen display means for displaying a design information input screen of the target product based on the on-site work procedure stored in the on-site work procedure storage means; and an input in the design information input screen displayed on the input screen display means. Input means used for inputting information necessary for an item, CAE procedure storage means for storing a CAE procedure necessary for analyzing a target product, and a CAE which operates according to an instruction instructed by the CAE procedure storage means Analysis means; and placing the design procedure input according to the design information input screen displayed on the input screen display means in a CAE procedure. A CAE analysis system comprising: an interface unit for transferring the data to the CAE procedure storage unit. 2. The apparatus according to claim 1, further comprising: design know-how storage means for storing design know-how related to a product to be designed in an interactive manner, wherein said input screen display means is provided so as to display the design know-how stored in said design know-how storage means. The CAE analysis system according to claim 1, wherein: 3. The method according to claim 2, wherein said interface means is HTML.
The CAE analysis system according to claim 1, wherein the CAE analysis system is described by: