JP2010097435A - Analysis apparatus, analysis method and analysis program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve verification accuracy by searching for a maximum value of analytical values in an analysis apparatus for analyzing a physical phenomenon by numerical analysis. <P>SOLUTION: The analysis apparatus includes: an analysis means 1 for outputting an analytical value of each small area in an analysis target area by numerical analysis; a maximum value area detection means 2 which regards small areas other than a small area detected as an area having a maximum value in the analysis target area as detection target areas and detects a maximum value area of which the analytical value is maximum; an area storage means 3 for respectively storing the maximum value area and excluded nodes in area information 31 and node information 32; a node determination means 4 for determining excluded nodes of the maximum value area; a maximum value area detection means 5 for storing a maximum value area having no excluded node in maximum value area information 51 as a maximum value area and setting a node of the maximum value area as an excluded node; a successive detection means 6 for successively detecting maximum value areas by regarding small areas excluding the maximum value area as detection target areas; a display means 7 for displaying adjacent maximum value areas by complementary colors and displaying areas between the maximum value areas by gradation; and a maximum number receiving means 8 for receiving the maximum number of maximum value areas. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an analysis apparatus that analyzes a physical phenomenon by numerical analysis, and more particularly to an analysis apparatus that reduces an oversight of a place to be verified and improves verification accuracy by searching for an extreme value of the analysis value.

  Currently, the design work in the manufacturing industry is mainly using Computer Aided Engineering (hereinafter referred to as CAE) that uses computer technology to support product design and manufacture. As an analysis method used in CAE, a finite element method for approximating a continuum having infinite degrees of freedom using a set of elements including a specified finite number of unknowns is widely used.

  A designer who uses CAE searches for a part having a large analysis value analyzed by the finite element method, confirms the influence on the product specification at the part, and performs product design work. However, the design work has a problem that, particularly when the shape of the analysis model is complicated, it takes time to search for a portion having a large analysis value, thereby increasing the work load on the designer.

Some conventional analysis devices detect an edge from a three-dimensional model to be processed, and perform analysis processing by a finite element method on a three-dimensional model obtained by flattening the edge with a curved surface having a predetermined radius of curvature. (For example, refer to Patent Document 1).
JP 2001-357082 A

  However, the conventional analysis device can search the upper part of the element having a large analysis value by the finite element method. However, depending on the calculation situation, the upper part may be concentrated near one place. There is a problem that a part having a large analytical value is not searched, and the part may be overlooked as a verification target at the time of design. In addition, even when the designer manually searches for a location where the analysis value is large, the conventional analysis device is used when the analysis model is composed of many parts and causes complicated contact or deformation. It takes time for the search, and there is a problem that the man-hour for the designer increases. Furthermore, the conventional analysis apparatus has a problem that even when a search is performed by the designer, if a portion with a large analysis value exists in a position hidden behind another part, it may be overlooked as a verification target at the time of design. Have

  The present invention has been made to solve the above-mentioned problems, and in particular, by performing a local maximum search of the analysis value, it is possible to reduce oversight of portions to be verified and evaluated in the target region, improve verification accuracy, and improve the designer. An object of the present invention is to provide an analysis device that can reduce the number of work steps.

  The analysis device disclosed in the present application divides the analysis target region into a plurality of small regions by closed boundaries formed by a plurality of nodes, performs numerical analysis for each small region, and outputs an analysis value. In the analysis apparatus for analyzing a physical phenomenon in the analysis target region, an analysis unit that performs the numerical analysis for each of the small regions and outputs the analysis value; and a small region that has already been detected as the maximum value in the analysis target region. Maximum value area detecting means for detecting all the small areas except for the detection target area, and detecting the small area having the maximum analysis value as the maximum value area in the detection target area, the maximum value area and the identification An area storage means for storing and accumulating excluded nodes that are nodes at the time of detection, and at least one of the nodes forming the maximum value area based on the area storage means. A node determination unit that determines whether or not a node is included; and when the node determination unit determines that the node of the maximum value region does not include the excluded node at all, the maximum value region is set as a maximum value region. A maximum value area detecting means for detecting the node of the maximum value area detected by the maximum value area detecting means regardless of the presence or absence of the detection as the excluded node; and the accumulated in the area storing means Sequential detection means for repeatedly and sequentially detecting the maximum value area by the maximum value area detection means using the small area excluding the maximum value area as the new detection target area.

  Thus, in the analysis device disclosed in the present application, the analysis unit outputs an analysis value for each of the small regions by numerical analysis, and the maximum value region detection unit detects the small region that has already been detected as the maximum value in the analysis target region. All of the small areas except the detection target area are detected, and the small area of the detection target area having the maximum analysis value is detected as the maximum value area, and the area storage means detects the maximum value area and the specific node. Is stored and accumulated at the time of each detection, and the node determination means determines whether or not the exclusion node is included in the maximum value area node based on the area storage means, and the maximum value area When the excluded node is not included, the maximum value region detecting unit detects the maximum value region as a maximum value region, and the maximum value region detected by the maximum value region detecting unit regardless of the presence or absence of the detection. A nodal point is detected as the exclusion node, and the maximum value is detected by the maximum value region detection unit, with the small region excluding the maximum value region accumulated by the region storage unit as the new detection target region. Since the area is repeatedly and sequentially detected, the small area with the maximum value can be detected, the oversight of areas to be verified in the analysis target area is reduced, the accuracy of verification by numerical analysis is improved, and the designer's work The burden can be reduced.

  In addition, in the analysis device disclosed in the present application, the analysis unit performs the numerical analysis based on a finite element method as necessary. As described above, the analyzing device disclosed in the present application can easily apply the numerical analysis to a structure having a complicated shape because the analyzing means performs the numerical analysis based on a finite element method. The numerical analysis can be easily performed on a wide range of objects.

  In addition, the analysis device disclosed in the present application highlights adjacent maximum value areas detected by the maximum value detecting means with a complementary color tone as necessary, and the color tone is continuous between the maximum value areas. It is provided with a display means for displaying with a gradation that changes. Thus, in the analysis device disclosed in the present application, the display unit highlights the adjacent maximum value areas detected by the maximum value detection means in a complementary color tone, and the color tone is continuous between the maximum value areas. Since it is displayed with a gradation that changes with time, only the elements that have the maximum value are listed and highlighted, and the part to be noted can be clearly shown to the user without omission. The expressed color tone can provide the user with a clear and easy-to-understand analysis result even when the analysis target has a complicated shape.

  The analysis device disclosed in the present application further includes an upper limit number receiving unit that receives the upper limit number of the maximum value region displayed by the display unit, if necessary, and the display unit is detected by the maximum value region detecting unit. In addition, when the number of detected maximum value areas exceeds the upper limit number, the maximum value area is displayed in descending order from the highest analysis value, and when the detected number is less than the upper limit number, the maximum number area is displayed. The maximum value area is displayed up to the detected number. Thus, in the analysis device disclosed in the present application, the upper limit number receiving unit receives the upper limit number of the maximum value region displayed by the display unit, and the display unit displays the maximum value region up to the upper limit number. As a result, only the maximum number of locations necessary for the user are listed and highlighted, and an appropriate number of sites to be noted by the user can be clearly specified.

(First embodiment of the present invention)
Hereinafter, an analysis apparatus according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 5.
1 is a block diagram showing the configuration of the analysis apparatus according to the first embodiment of the present invention, FIG. 2 is a data layout example of the analysis apparatus described in FIG. 1, and FIG. 3 is an analysis apparatus described in FIG. FIG. 4 shows an analysis example of the analysis apparatus described in FIG. 1, and FIG. 5 shows an example of an analysis result screen of the analysis apparatus described in FIG.

  In FIG. 1, an analysis apparatus 1 according to the present embodiment outputs an analysis value for each small region obtained by dividing a region to be analyzed in a physical model 100 to be analyzed based on a finite element method by numerical analysis. And all the small areas except the small area already detected as the maximum value in the analysis target area are set as the detection target areas, and among the detection target areas, the small area where the analysis value is the maximum value is set as the maximum value area. Maximum value area detection means 2 to detect, area storage means 3 for storing and storing the maximum value area and an excluded node which is a specific node in area information 31 and node information 32 at the time of each detection, and this area storage Based on the means 3, the node determining means 4 for determining whether or not the excluded node is included in the maximum value area, and the node determining means 4 includes the excluded node at all in the node of the maximum value area. If it is determined that the maximum value region is not detected, the maximum value region is detected as a maximum value region, stored and stored in the maximum value region information 51, and the maximum value detected by the maximum value region detection means regardless of the presence or absence of the detection. Maximum value region detection means 5 for detecting a node of the value region as this excluded node, and detection of the maximum value region with the small region excluding the maximum value region accumulated by the region storage means 3 as the new detection target region The sequential detection means 6 for repeatedly and sequentially detecting the maximum value area by means 2 and the adjacent maximum value areas detected by the maximum value detection means 5 are highlighted in a complementary color tone, and the area between the maximum value areas is displayed. The display means 7 for displaying with gradation in which the color tone changes continuously, and the upper limit number receiving means 8 for receiving the upper limit number of the maximum value region highlighted by the display means 7 are provided.

  As shown in FIG. 2A, the area information 31 can include an area number item, an analysis value item, a node number item, and a maximum value flag item. This area number item indicates an area number for uniquely identifying a small area of the analysis target area. The analysis value item indicates an analysis value in a small area having the area number. The node number item indicates the number of nodes constituting the small area by the number of nodes. The maximum value flag item indicates whether or not the small area is detected as the maximum value area by a flag. In the figure, for example, the area information 31 includes a small area of area number S1 formed of three nodes of node number 1, node number 2, and node number 3, and this analysis value is 120, which is detected as the maximum value area. Indicates that

  The node information 32 can include a node number item and an attribute Y item as shown in FIG. This node number item indicates a node number that uniquely identifies the node constituting the small area. In addition, this attribute Y item indicates whether or not there is an attribute Y indicating that this node is set as the excluded node. The node information 32 indicates that the node having node number 1 has this attribute Y in FIG.

  Further, the local maximum area information 51 can include a local maximum area number item as shown in FIG. The maximum value region number item indicates the region number of the small region set as the maximum value region, in the example of the figure, the region number S1 and the region number Sn.

  Further, as shown in FIG. 4, the analysis apparatus according to the present embodiment can analyze a three-dimensional physical model 100 having a surface-shaped shell element as a small region, which is a numerical analysis execution unit. . This shell element includes, for example, region numbers S5, S6, and S17 as shown in FIG. This area number S5 is formed by the node numbers 2, 6, 12, and 14 as shown in FIG. The area number S6 is formed by the node numbers 12, 13, 14, and 15. The region number S5 and the region number S6 are adjacent to each other with the node numbers 12 and 14. The region number S17 is formed by the node numbers 27, 31, 35, and 39, and is not adjacent to the region number S5 and the region number S6.

Hereinafter, the operation of the analysis apparatus of the present embodiment based on the above configuration will be described.
As shown in FIG. 3, the analysis unit 1 performs numerical analysis on the physical model 100 to be analyzed by a finite element method to calculate an analysis value for each shell element. The analysis value is registered (ST1).

  The sequential detection means 6 sets a variable i for searching this shell element by an iterative process, and sets a zero value as an initial value of the variable i (ST2). The sequential detection means 6 adds 1 to the variable i (ST3).

  The maximum value area detection means 2 detects the shell element having the maximum value based on the analysis value item of the area information 31, and sets 1 in the maximum value flag item of the area information 31 regarding the detected shell element. Is set (ST4). The node determination means 4 determines whether or not the detected shell element includes the node of the attribute Y based on the attribute Y item of the node information 32 (ST5).

  If the shell element does not include the node of the attribute Y as a result of the determination in ST5, the maximum value region detecting means 5 uses the shell element max () as the maximum value region as the shell element detected in ST4. This is detected as i) (ST6). The area storage means 3 registers the area number of the shell element of this maximum value area in the maximum value area information 51 (ST6).

  Further, the region storage means 3 sets the node of the shell element as a node of the attribute Y and registers 1 by setting 1 in the attribute Y item of the node information 32 (ST7). For example, as shown in FIG. 4, when the shell element having the area number S5 has the maximum value, the area storage means 3 uses the nodes having the node numbers 2, 6, 12, and 14 as the nodes having the attribute Y. Register in the node information 32.

  As shown in FIG. 3, the sequential detection means 6 determines whether the variable i has reached the upper limit value num (ST8). The upper limit value num can be a fixed value, or can be set as appropriate by receiving input from the user by the upper limit number receiving means 8. When the upper limit number num is set by the upper limit number receiving means 8, only the maximum number of locations necessary for the user are displayed, and an appropriate number of portions to be noted by the user are clearly indicated without omission. be able to.

  Further, when the variable i reaches the upper limit value num according to the determination of ST8, the display means 7 stores the maximum value area based on the maximum value area information 51 in which the maximum value area is stored. Shell elements max (i) to max (num) as local maximum regions are displayed on the screen (ST9). With respect to this screen display, the display means 7 can highlight the adjacent maximum value areas in a complementary color tone, and can display between the maximum value areas with gradation in which the color tone changes continuously.

  By the gradation display, the display means 7 lists and highlights only the elements having the maximum value, and can clearly indicate to the user the part to be noted, and stepwise by gradation. The expressed color tone can provide the user with a clear and easy-to-understand analysis result even when the analysis target has a complicated shape.

  In addition, when the shell element detected in ST4 includes the node of the attribute Y according to the determination in ST5, the area storage unit 3 uses the node of the shell element as the node of the attribute Y as the node. Registration in the information 32 (ST10). Based on the region information 31 and the node information 32, the sequential detection means 6 excludes the shell element once detected in ST4 from the search target, and determines whether there is a shell element as the search target. (ST11).

  If it is determined in ST11 that there is a shell element as the search target, the sequential detection means 6 detects the shell element having the maximum value in the maximum value area detection means 2 as in ST4. Instruct. Henceforth, this analysis apparatus performs the repetition process from said ST4.

  As shown in FIG. 4, the node determining means 4 repeats this ST4 again after the maximum value area detecting means 2 detects the area number S5 as a shell element having the maximum value in ST4. If the area number S6 is detected at ST5, it is determined at ST5 that the nodes of the node numbers 12 and 14 of the area number S6 have the attribute Y. Based on this determination, the maximum value region detecting means 5 does not detect the region number S6 as a maximum value region in ST6. Further, the area storage means 3 registers the node of the node number 13 and 15 of the area number S6 as the node of the attribute Y in the node information 32 in ST7.

  Further, when the node determination unit 4 detects the region number S17 by the repetition process, it determines in ST5 that the node of the region number S17 does not have the attribute Y. Based on this determination, the maximum value region detecting means 5 detects this region number S17 as a maximum value region in ST6. Further, the area storage means 3 registers the nodes of the node numbers 27, 31, 35 and 39 of the area number S6 in the node information 32 as nodes of the attribute Y in ST7.

  In this way, the local maximum area detecting means 5 can detect a location where the local maximum value is obtained, reduce the oversight of the location to be verified in the analysis target region, improve the verification accuracy by numerical analysis, and Work burden can be reduced.

  If the sequential detection means 6 determines that there is no shell element to be searched in ST11, the display means 7 displays the shell element as the maximum value region accumulated in ST9 on the screen. To do. In this case, since the number of detected maximum value areas is smaller than the num input from the user by the upper limit number receiving means 8, the display means 7 displays all the detected maximum value areas on the screen. .

  For example, as shown in FIG. 5, when the num value is designated as 5, the display means 7 displays the shell element A in the maximum value region detected in the physical model 100 as a machine part having a complicated shape. , B, C, D, and E are highlighted. Since the shell elements C and D are maximum value areas adjacent to the shell element E, they are highlighted by the display means 7 in a color tone complementary to the shell element E. Further, the display means 7 displays between the five maximum value areas with gradation in which the color tone changes continuously.

  The display means 7 highlights portions that are difficult to search manually by the user, such as the shell elements B and C located at positions hidden by other parts, thereby reducing the search time by manual operation. , It is possible to prevent an oversight of the maximum value region located in a complex part where the deformation is large.

In addition, when the variable i does not reach the upper limit num due to the determination in ST8, the analysis apparatus repeats the process from ST3.
In the above embodiment, the display means 7 highlights adjacent maximum value areas using the color of complementary colors. However, the display means 7 is not limited to highlight display using the complementary colors. For example, It is also possible to highlight the local maximum area with a fixed color. Moreover, in the said embodiment, although the said display means 7 was displayed as gradation between maximum value area | regions, it is not limited to this gradation display, For example, it is maximum value by making color-free between maximum value area | regions. It is also possible to make the area stand out.

Note that the physical model 100 to be analyzed can be applied to a wide range of physical phenomena, and can be applied to physical phenomena such as collision, impact, drop, plastic working, penetration, cracking, and fracture. The analysis device disclosed in the present application can be applied to a wide range of physical phenomena to design machines and instruments having complicated shapes in a wide range of fields, such as automobiles, ships, railway vehicles, plants, sports equipment, and precision machines. We can support smoothly.
The hardware configuration of the analysis apparatus according to this embodiment includes a CPU, a memory, a mass storage device, a display, a communication device, a keyboard, a mouse, input means, and a bus connecting the above-described units.

[Appendix] The following appendices are further disclosed with respect to the embodiment including the above examples.
(Supplementary note 1) The analysis target area is divided into a plurality of small areas by closed boundary lines formed by a plurality of nodes, numerical analysis is performed for each of the small areas, and an analysis value is output. In the analysis device for analyzing the physical phenomenon in the above, the numerical analysis is performed for each of the small regions, the analysis means for outputting the analysis value, and all except the small region already detected as the maximum value in the analysis target region Maximum value area detecting means for detecting the small area as a detection target area, and detecting the small area having the maximum analysis value among the detection target areas as a maximum value area, and the maximum value area and a specific node. Area storage means for storing and accumulating excluded nodes at the time of each detection, and at least one excluded node among all nodes forming the maximum value area is included based on the area storage means A node determination unit that determines the maximum value region when the node determination unit determines that the excluded node is not included in the node of the maximum value region, and detects the maximum value region. The maximum value area detecting means for detecting the node of the maximum value area detected by the maximum value area detecting means regardless of the presence or absence as the excluded node, and the maximum value area accumulated by the area storing means are excluded. An analysis apparatus comprising sequential detection means for repeatedly and sequentially detecting the maximum value area by the maximum value area detection means with the small area as a new detection target area.

(Supplementary note 2) The analysis apparatus according to supplementary note 1, wherein the analysis means performs the numerical analysis based on a finite element method.

(Supplementary Note 3) Display means for highlighting adjacent maximum value areas detected by the maximum value detecting means with a complementary color tone and displaying between the maximum value areas with gradation in which the color tone continuously changes. The analysis apparatus according to Supplementary Note 1 or Supplementary Note 2.

(Supplementary Note 4) An upper limit number receiving unit that receives an upper limit number of maximum value areas displayed by the display unit is provided, and the display unit detects the number of detected maximum value areas detected by the maximum value area detecting unit. When the upper limit number is exceeded, the maximum value area is displayed in descending order from the top of the analysis value, and when the detected number is less than the upper limit number, the maximum value area is displayed up to the detected number. The analysis device according to attachments 1 to 3.

(Supplementary Note 5) The analysis target region is divided into a plurality of small regions by closed boundary lines formed by a plurality of nodes, numerical analysis is performed for each of the small regions, and an analysis value is output. In the analysis method for analyzing the physical phenomenon in the above, the numerical analysis is performed for each of the small regions, the analysis step for outputting the analysis value, and all the small regions that have already been detected as the maximum value in the analysis target region A maximum value region detecting step for detecting the small region as a detection target region, and detecting the small region in the detection target region having the maximum analysis value as a maximum value region, and the maximum value region and a specific node. An area storage step of storing and accumulating excluded nodes at each detection;
Based on the region storing step, a node determining step for determining whether at least one of the excluded nodes is included among all the nodes forming the maximum value region; and the node determining step, the node of the maximum value region When it is determined that the excluded node is not included in any node, the maximum value region is detected as a maximum value region, and the maximum value region detected by the maximum value region detection step regardless of the presence or absence of the detection A maximum value region detecting step of detecting the nodal point as the excluded node, and the small region excluding the maximum value region accumulated by the region storing step as a new detection target region by the maximum value region detecting step. A sequential detection step of repeatedly and sequentially detecting the maximum value region.

(Supplementary note 6) The analysis method according to supplementary note 5, wherein the analysis step performs the numerical analysis based on a finite element method.

(Supplementary Note 7) A display step of highlighting adjacent maximum value areas detected by the maximum value detection process in a complementary color tone and displaying between the maximum value areas with gradation in which the color tone continuously changes. The analysis method according to Supplementary Note 5 or Supplementary Note 6.

(Supplementary Note 8) An upper limit number receiving step of receiving an upper limit number of maximum value areas displayed by the display step, wherein the display step detects the number of maximum value areas detected by the maximum value area detection step. When the upper limit number is exceeded, the maximum value region is displayed in descending order from the top of the analysis value, and when the detected number is less than the upper limit number, the maximum value region is displayed up to the detected number. The analysis method according to appendix 5 to appendix 7.

(Supplementary note 9) The analysis target region is divided into a plurality of small regions by closed boundary lines formed by a plurality of nodes, numerical analysis is performed for each of the small regions, and an analysis value is output. In an analysis program that causes a computer to function to analyze a physical phenomenon in the above, an analysis means for performing the numerical analysis for each of the small regions and outputting the analysis value, a small region that has already been detected as the maximum value in the analysis target region A maximum value region detecting means for detecting all the small regions except for the detection target region, and detecting the small region having the maximum analysis value among the detection target regions as the maximum value region, the maximum value region and the identification An area storage means for storing and accumulating excluded nodes that are nodes at the time of each detection, and based on the area storage means, at least among all the nodes forming the maximum value area A node determination unit that determines whether one of the excluded nodes is included, and when the node determination unit determines that the node of the maximum value region does not include any of the excluded nodes, the maximum value region is maximized. A maximum value area detecting means for detecting as a value area and detecting the node of the maximum value area detected by the maximum value area detecting means regardless of the presence or absence of the detection as the excluded node; An analysis program for causing a computer to function as a sequential detection unit that repeatedly detects the maximum value region by the maximum value region detection unit using the small region excluding the maximum value region as a new detection target region.

(Supplementary note 10) The analysis program according to supplementary note 9, wherein the analysis means performs the numerical analysis based on a finite element method.

(Supplementary Note 11) Display means for highlighting adjacent maximum value areas detected by the maximum value detection means in a complementary color tone and displaying between the maximum value areas with gradation in which the color tone continuously changes. The analysis program according to appendix 9 or appendix 10, which causes the computer to function.

(Supplementary Note 12) A computer is caused to function as an upper limit number receiving unit that receives the upper limit number of the maximum value region displayed by the display unit, and the display unit detects the maximum value region detected by the maximum value region detecting unit. When the number exceeds the upper limit number, the maximum value region is displayed in descending order from the top of the analysis value, and when the detected number is less than the upper limit number, the maximum value region is displayed as the detected number. The analysis program according to appendix 9 to appendix 11, which displays up to.

The block diagram which shows the structure of the analyzer which concerns on the 1st Embodiment of this invention Data layout example of analysis apparatus according to first embodiment of the present invention The flowchart of the analyzer which concerns on the 1st Embodiment of this invention Analysis example of the analyzing apparatus according to the first embodiment of the present invention Analysis result screen example of the analysis apparatus according to the first embodiment of the present invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Analysis means 2 Maximum value area detection means 3 Area storage means 31 Area information 32 Node information 4 Node determination means 5 Maximum value area detection means 51 Maximum value area information 6 Sequential detection means 7 Display means 8 Maximum number reception means 100 Physical model A , B, C, D, E Shell elements

Claims (6)

The analysis target area is divided into a plurality of small areas by closed border lines formed by a plurality of nodes, numerical analysis is performed for each small area, an analysis value is output, and a physical phenomenon in the analysis target area is In the analysis device to analyze,
Analyzing means for performing the numerical analysis for each small region and outputting the analysis value;
All the small areas except for the small area that has already been detected as the maximum value in the analysis target area are set as the detection target areas, and the small area that has the maximum analysis value among the detection target areas is set as the maximum value area. A maximum value area detecting means for detecting;
An area storage means for storing and storing the maximum value area and the excluded nodes which are specific nodes at the time of each detection;
Node determining means for determining whether at least one of the excluded nodes is included among all the nodes forming the maximum value area based on the area storage means;
When it is determined by the node determination means that the excluded node is not included at all in the nodes of the maximum value region, the maximum value region is detected as a maximum value region, and the maximum value is determined regardless of the presence or absence of the detection. A maximum value area detecting means for detecting the node of the maximum value area detected by the area detecting means as the excluded node;
And a sequential detection unit that repeatedly detects the maximum value region sequentially by the maximum value region detection unit using the small region excluding the maximum value region accumulated by the region storage unit as the new detection target region. .
The analysis device according to claim 1,
An analysis apparatus in which the analysis means performs the numerical analysis based on a finite element method.
In the analysis device according to claim 1 or 2,
An analysis apparatus comprising: display means for highlighting adjacent maximum value areas detected by the maximum value detecting means in a complementary color tone and displaying between the maximum value areas with gradation in which the color tone continuously changes.
The analysis device according to claim 3,
An upper limit number receiving means for receiving the upper limit number of the maximum value area displayed by the display means;
When the number of detected maximum value areas detected by the maximum value area detecting means exceeds the upper limit number, the display means displays the maximum value area from the top of the analysis value to the upper limit number in descending order, An analysis apparatus that displays the maximum value region up to the detected number when the detected number is less than the upper limit number.
The analysis target area is divided into a plurality of small areas by closed border lines formed by a plurality of nodes, numerical analysis is performed for each small area, an analysis value is output, and a physical phenomenon in the analysis target area is In the analysis method to analyze,
Performing the numerical analysis for each small region, and outputting the analysis value;
All the small areas except for the small area that has already been detected as the maximum value in the analysis target area are set as the detection target areas, and the small area that has the maximum analysis value among the detection target areas is set as the maximum value area. A maximum value area detection step to detect;
An area storing step of storing and storing the maximum value area and an excluded node which is a specific node at the time of each detection;
A node determining step of determining whether at least one of the excluded nodes is included among all the nodes forming the maximum value region based on the region storing step;
When it is determined by the node determination step that the excluded node is not included at all in the nodes of the maximum value region, the maximum value region is detected as a maximum value region, and the maximum value is determined regardless of the presence or absence of the detection. A maximum value region detecting step of detecting the node of the maximum value region detected by the region detecting step as the excluded node;
A sequential detection step of repeatedly detecting the maximum value region repeatedly by the maximum value region detection step using the small region excluding the maximum value region accumulated by the region storage step as a new detection target region. .
The analysis target area is divided into a plurality of small areas by closed border lines formed by a plurality of nodes, numerical analysis is performed for each small area, an analysis value is output, and a physical phenomenon in the analysis target area is In an analysis program that causes a computer to function as
Analyzing means for performing the numerical analysis for each small region and outputting the analysis value,
All the small areas except for the small area that has already been detected as the maximum value in the analysis target area are set as the detection target areas, and the small area that has the maximum analysis value among the detection target areas is set as the maximum value area. Maximum value area detection means to detect,
An area storage means for storing and accumulating the maximum value area and an excluded node which is a specific node at each detection;
Node determining means for determining whether at least one of the excluded nodes is included among all the nodes forming the maximum value area based on the area storage means;
When it is determined by the node determination means that the excluded node is not included at all in the nodes of the maximum value region, the maximum value region is detected as a maximum value region, and the maximum value is determined regardless of the presence or absence of the detection. A maximum value area detecting means for detecting the node of the maximum value area detected by the area detecting means as the excluded node;
Let the computer function as a sequential detection unit that repeatedly detects the maximum value region by the maximum value region detection unit, with the small region excluding the maximum value region accumulated by the region storage unit as the new detection target region. Analysis program.

Images