JPH08147353A - output method - Google Patents

Abstract

(57) [Summary] [Objective] Regarding the output of the results of analysis and experiments using the element splitting model, we propose an output method that can display the output that conventionally required multiple figures in one figure. [Structure] In a method of performing analysis or experiment using a target model represented by a plurality of divided elements and outputting the result, the range and display of the physical quantity of the analysis result or experimental result of the target model The direction to be specified is specified on the shape output of the target model, and the physical quantity in the specified range is output in the form of a graph in the specified direction in a manner of being superimposed on the shape output of the target model.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of outputting experimental results, analysis results using a discretized model, and the like. Especially, FEM (finite element method) and BEM (boudary element method)
The present invention relates to a method of outputting an analysis result, which is represented by, for example.

[0002]

2. Description of the Related Art With the recent rapid increase in processing speed of computers, numerical analysis such as finite element method and boundary element method has been performed in various fields. In these analyses, the most general method is to perform approximate calculation with a discretized model in which the analysis target is divided into a finite number of elements.

The method of displaying the calculation result is roughly divided into the following 2
There is one. (1) A method of displaying the results in a graph or numerical values separately from the model, and (2) a method of directly displaying on the element model. As the method (1), there are a method of directly expressing the result as numerical data, a method of displaying the result in a graph on coordinates specified separately from the model, and the like. On the other hand, the method (2) is a method in which movement or deformation is directly illustrated by a change in the shape of the element, a method in which a value for each node of the element (a corner point of the element) is displayed by an arrow,
There is a method of displaying the results in different colors on the element surface. The method (1) is used when it is desired to know a partially more detailed result, and the method (2) is used when it is desired to capture the whole image of the result. That is, it is an output method that is suitable for each use.

[0004]

However, each of the two methods described in the above-mentioned conventional example has the following drawbacks. The numerical method and graph notation in (1) is aimed at seeing detailed data at each node. However, since this data is independent of the model, it is often difficult to see which part of the entire model is extracted from the data alone. Therefore, in this notation, it is often difficult for a third party to understand the output only by looking at the output, and a supplementary explanation in text and a model diagram for comparison are necessary.

The method (2) illustrated on the model is intended not to display the value for each element or node, but to make a notation that is more intuitive and intuitive than the detailed notation. However, since the color-coded display is a scalar, it is not possible to make a notation that needs to indicate the direction such as displacement or force. Furthermore, it is not possible to simultaneously display multiple results on one model, including the notation using arrows.

[0006]

The present invention has been made for the purpose of solving the above-mentioned problems, and has the following structure as one means for solving the above-mentioned problems. That is, in the method of performing an analysis or an experiment using a target model represented by a plurality of divided elements and outputting the result, the physical quantity of the analysis result or the experimental result of the target model is displayed as well as the range to be displayed. A power direction is specified on the shape output of the target model, and the physical quantity in the specified range is output in the form of a graph in the specified direction by superimposing it on the shape output of the target model. To do.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to an embodiment of the present invention and the drawings. <Embodiment 1> FIG. 1 is a diagram showing a configuration example of a system for carrying out Embodiment 1 of the present invention.

In the figure, reference numeral 1 is a central processing unit which is the center of the system and performs all processing, and 2 is a display device for displaying output such as a CRT or plasma display, which is used for dialogue with an operator and soft printing of processing results. It is a display device. Three
Is a keyboard for inputting operation, and 4 is a pointing device such as a mouse handled by an operator. Reference numeral 5 is a printer such as a laser printer, impact printer, or plotter for hard-printing the processing result, and 6 is a RAM. The operating system 60, the processing program 61 according to the present embodiment, and the work used by the processing program 61. The area 62 and the like. The operating system 60, the processing program 61, and the work area 62 may partially or wholly exist in the ROM 7, the floppy disk 8, and the large capacity disk 9 which will be described later. It may be executed by overlaying on. 7 is a ROM,
Required BIOS, fixed (firmware) processing programs and parameters are stored. A floppy disk 8 is used as a portable program or data file. 9 is a hard disk,
It is a large-capacity storage device such as a CD-ROM or a magneto-optical disk, which stores a large amount of data, an operating system, a processing program, and the like, and is also used as a backup file. Reference numeral 10 denotes a communication control device, which controls communication of transmission and reception of control data, numerical data, and image data with other systems and terminals via a communication line. A bus 11 connects the central processing unit and each of the other devices.

FIG. 2 is a flow chart showing the operation and processing of the processing program of the embodiment of the present invention in the system shown in FIG. 3 to 6 are diagrams showing in more detail the operation and processing at each processing stage in FIG. The processing of the first embodiment will be described below with reference to these figures. Note that FIG. 7 is a diagram showing an output example of a result according to the first embodiment taking the two-dimensional plane model 100 as an example. The procedure until the output of FIG. 7 is obtained is as follows.

At step P1 of the flow chart of FIG.
First, specify the area to display the graph. Since the linear area is designated in the example shown in FIG. 7, the starting point A is designated on the surface of the model as shown in step P1-1 of FIG.
The end point B (next point) is designated by 1-2. Step P1-
If the input is completed in step 3, the process proceeds to step P1-4. In Step P1-4, the line segment AB, which is the shortest distance on the model surface connecting the two points of the starting point A and the ending point B, is selected as the area for displaying the graph.

Next, step P2 is executed. That is, the number of divisions of the line segment AB is input in step P2-1 of FIG.
Next, in step P2-2, the line segment AB is equally divided according to the number of divisions input in P2-1, and the coordinates of each division point are obtained (in the case of FIG. 7, it is 13 divisions). Next, step P
In step 3, in step P3-1 (FIG. 5), the data (for example, stress, strain, displacement, etc.) to be displayed on the line segment AB is selected. In the next step P3-2, the data value at each division point (including points A and B) is obtained by linear interpolation from the value of each node on the element surface including that point.

Next, in step P4, step P4-
In 1, specify the direction in which the graph should be displayed.
In -2, the length of the maximum value of the graph (that is, the maximum range to be displayed in the vertical axis direction) is input. In the case of FIG. 7, the display direction specifies the direction perpendicular to the model surface. In Step P4-3, the length of the maximum value is specified in the form of a ratio with the length of the area AB (for example, 0.25). In the next step P4-4, the maximum value of the data is selected and the lengths of other values are determined so that it becomes the specified length. And
Each coordinate axis is calculated on the starting point A so that the maximum value falls.

In step P5, the user is asked whether to input another graph. In the case of the example in FIG. 7, No is selected here. The operation is completed as described above, and the graph 200 of the result designated on the line segment AB is displayed as shown in FIG. <Embodiment 2> The embodiment 1 is an example of output on a two-dimensional plane, but in the embodiment 2 of the present invention, a case where the model surface is a curved surface model 30 will be described. In the second embodiment, FIG.
An example in which a graph is displayed in the circumferential direction on the three-dimensional cylindrical model 300 as shown in FIG. First, in step 1, a start point A and an end point B are designated on the surface. Then, the shortest distance connecting the points A and B along the curved surface on the curved surface shown in FIG. 8 becomes the display area of the graph.

Next, in step P2, the number of divisions of the line segment AB is input, and subsequently in step P3, the type of data to be displayed is input. These operations are the same as in Example 1. Next, in step P4, the direction and size for displaying the graph are designated, and when the input in step P5 is completed, the graphs 400 and 400 'are displayed in the next step P6 as shown in FIG. 9 or FIG. .

FIG. 9 is a graph 400 in which the display direction of the graph is perpendicular to the surface of the model 300, and FIG. 10 is a result of a graph 400 'in which the display is aligned in the x-axis direction. <Third Embodiment> In the third embodiment, the same three-dimensional cylindrical model 300 as the model shown in FIG. 8 of the second embodiment is used, but an example in which the region where the graph is to be displayed cannot be represented by the shortest distance between two points. Indicates.

Now, in step P1, assume that it is desired to select the route 2 in FIG. However, if points A and B are specified here, the route 1 will be selected in the display area of the graph. In this case, the route 2 cannot be selected with only two points. Therefore, by selecting the point A1 as the intermediate point after the start point A and then selecting the end point B, the display area of the graph is designated by the route 2 connecting A-A1-B.

Next, the number of divisions in step P2 is input. If there is an intermediate point, the number of divisions is input for each two points (in the present embodiment, 2 between A-A1 and A1-B). One).
In the next step P3, select the data type, and in step P
The procedure of designating the display direction and size of the graph of No. 4 and determining the coordinate axes is the same as that of the second embodiment. Finally, if it is determined in step P5 that the input has been completed, the resulting graph is displayed in step P6.

In this method, a complicated display area that cannot be represented by the shortest distance between two points can be designated by providing a plurality of intermediate points. <Embodiment 4> Embodiment 4 shows an embodiment in which a plurality of results are displayed on one model. An example will be described in which, using the same cylindrical model as the model shown in FIG. 8 of the second embodiment, one data in a certain range is displayed separately for the X component and the Y component.

First, in step P1, the display area AB of the graph is designated as shown in FIG. 12, and in the next step P2, the division number is input. In the next step P3, the type of display data is input as the X component of certain data, and in the next step P4, the display direction is input as the X-axis direction of the coordinates. Next step P
At step 5, you will be asked if you want to enter more, so enter YES. This returns to the area designation again, so that the same area AB is designated at step P1 and the next step P
In step 3, the Y component of the data is specified, and in step P4, the Y coordinate
Specify to display in the direction.

When the input is completed in the next step P5 and the two are displayed together, the result of simultaneously displaying a plurality of data on the same model can be obtained as shown in the graph 500 of FIG. <Embodiment 5> This embodiment 5 shows an embodiment in which a plurality of areas are taken and a plurality of results are displayed simultaneously. The difference from the embodiment 4 is that the display area of the graph is changed in step P1. It is about to specify a different area when specifying. As a graph of the result, a graph as shown in FIG. 14 is obtained.

<Embodiment 6> Embodiment 6 shows an embodiment in which a plurality of results are displayed in the same direction in one area. The difference from the fifth embodiment is only that the same direction is specified twice when specifying the display direction in step P4. The graph of the result is shown in FIG.

The present invention may be applied to a system composed of a plurality of devices or an apparatus composed of one device. Further, it goes without saying that the present invention can be applied to the case where it is achieved by supplying a program to a system or an apparatus.

[0023]

As described above, according to the output method of claim 1, in the method of performing the analysis or the experiment using the object model represented by the plurality of divided elements and outputting the result, the object model Specified on the shape output of the target model, the range and the direction to display the physical quantity of the analysis result and the experimental result of, the physical quantity of the specified range,
In the specified direction, the shape output of the target model is superimposed and output in the form of a graph. Therefore,
With regard to the output of the results of analysis and experiments using the element splitting model, it becomes possible to display the output, which conventionally required multiple figures, in one figure.

According to the method of claim 2, it is possible to specify the direction in which the physical quantity of the analysis result or the experimental result should be displayed. According to the method of claim 3, at least 2 of this area
It can be specified by one or more end points. According to the method of claim 4, it is possible to specify the accuracy with which the physical quantity of the analysis result or the experimental result is displayed.

According to the method of claim 5, it is possible to specify the type of data to be displayed on the target model from the physical quantities of the analysis result and the experimental result. According to the method of claim 6, in displaying the physical quantity of the analysis result or the experimental result, the display size of the data to be displayed on the target model can be designated. According to the method of claim 7, the instruction of the display method of the graph can specify the display method of a plurality of two-dimensional graphs on the same target model and display a plurality of two-dimensional graphs.

According to the method of the eighth aspect, it is possible to output the data to be displayed with the display direction being perpendicular to the surface or aligned with the X axis. According to the method of claim 9, a specific route can be selected by specifying a plurality of graph display routes.

[Brief description of drawings]

FIG. 1 is a diagram showing a system configuration for carrying out a first embodiment of the present invention.

FIG. 2 is a flowchart showing operations and processes of a processing program according to the embodiment of this invention.

FIG. 3 is a diagram for explaining step P1 of FIG. 2 in more detail.

FIG. 4 is a diagram for explaining step P2 of FIG. 2 in more detail.

FIG. 5 is a diagram for explaining step P3 of FIG. 2 in more detail.

FIG. 6 is a diagram for explaining step P4 of FIG. 2 in more detail.

FIG. 7 is an output example of the two-dimensional plane model according to the first embodiment of the present invention.

FIG. 8 is a diagram showing a cylindrical model according to a second embodiment of the present invention.

FIG. 9 is a diagram showing an example in which the display direction of the graph is perpendicular to the surface in the cylindrical model of Example 2 of the present invention.

FIG. 10 shows a cylindrical model according to a second embodiment of the present invention,
It is a figure which shows the example which arranged the display of the graph to the X-axis direction.

FIG. 11 is a diagram showing an example in which an operator selects a route according to the third embodiment of the present invention.

FIG. 12 is a diagram for explaining a designation method on a cylindrical model according to a fourth embodiment of the present invention.

FIG. 13 is a diagram showing a graph output example in which two graphs are output in an overlapping manner in Example 4 of the present invention.

FIG. 14 is a diagram showing an example of a graph output when a plurality of display areas are designated according to the fifth embodiment of the present invention.

FIG. 15 is a diagram showing an example of displaying a plurality of results in the same direction in Example 6 of the present invention.

[Explanation of symbols]

 1 Central Processing Unit 2 Display Device 3 Keyboard 4 Pointing Device 5 Hard Printer 6 RAM 7 ROM 8 Floppy Disk 9 Mass Storage Device 10 Communication Control Device 11 Bus 60 Operating System (OS) 61 Processing Program 62 Work Area 100 Two-dimensional Plane Model 200 Output Graph 300 3D Cylindrical Model 400 Output Graph 400 'Output Graph 500 Output Graph

Claims (9)

[Claims] 1. A method of performing an analysis or an experiment using a target model represented by a plurality of divided elements and outputting the result, a range in which a physical quantity of the analysis result or the experimental result of the target model is to be displayed. Also, the direction to be displayed is specified on the shape output of the target model, and the physical quantity in the specified range is output in the form of a graph in the specified direction by superimposing it on the shape output of the target model. Output method characterized by. 2. The output method according to claim 1, wherein the direction in which the physical quantity of the analysis result or the experimental result of the target model is to be displayed is designated. 3. The output method according to claim 2, wherein the area is specified by at least two or more end points of the area. 4. The output method according to claim 2, further comprising designating the precision with which the physical quantity of the analysis result or the experimental result of the target model is displayed. 5. The output method according to claim 2, including specifying the type of data to be displayed on the target model from among the physical quantities of the analysis result and the experimental result of the target model. . 6. The display of the physical quantity of the analysis result or the experimental result of the target model includes designation of the display size of the data displayed on the target model.
Output method described in any of. 7. The method of displaying the graph is characterized in that a method of displaying a plurality of two-dimensional graphs is designated on the same target model and a plurality of two-dimensional graphs are displayed. The output method according to claim 1. 8. The output method according to claim 6, wherein the display direction of the data to be displayed is vertical to the surface or aligned with the X axis. 9. The output method according to claim 1, wherein a specific route is selected by designating a plurality of graph display routes.