JP2006172019A - Data analyzing device and its control method and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a data analyzing device for achieving the efficiency of analytic man-hours by reducing man-hours and a calculation time to be imposed on analysis by the automatic simplification and erasure processing of a finite element model and the automatic input processing of input conditions necessary for analysis corresponding to an object to be analyzed. <P>SOLUTION: This data analyzing device is provided with a display processing 4 for displaying the buffer materials and structure of an object to be processed on an operation screen at the time of performing buffer material behavior simulation processing, conversion processing for converting the structure into a rigid body, storage processing for storing a time-sequentially changing impact force to be applied from the buffer member to the structure being the rigid body to be obtained by simulation results in a memory and setting processing for erasing the buffer materials displayed on the operation screen, and for setting the impact force stored in the memory as an input at the time of performing the structure frame structure behavior simulation processing. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention simulates the behavior of the structure and the cushioning material due to the falling phenomenon of the structure packaged in the cushioning material, thereby supporting the data analysis for supporting the design of the structure and the cushioning material against the drop problem. The present invention relates to an apparatus, a control method thereof, and a program.

  In order to efficiently achieve the strength guarantee against the drop problem of the structure frame structure wrapped in the cushioning material, it is desirable to study and evaluate at the product design stage, but actually the product drop test after the product is completed The current situation is that the evaluation is carried out while changing the shape and material by trial and error.

  As a result, it is necessary to repeat design changes and drop tests, leading to delays in product development and increased development costs.

  As means for solving these problems, it is possible to analyze a collision / drop problem by a general-purpose program using numerical analysis means such as a finite element method.

In addition, as a technique for performing impact analysis of a three-dimensional structure with high accuracy, synthetic resin foam is replaced with a honeycomb model as shown in Patent Document 1, and the same stress-strain relationship is defined in the three-axis direction. A method for performing dynamic analysis has been proposed. Further, in the dynamic stress analysis by the finite element method as shown in Patent Document 2, the structure is calculated from the amount of shock energy absorbed until the strain energy release rate around the defect of the structure reaches the limit strain energy release rate. A method for obtaining the impact strength of the steel has been proposed.
Japanese Patent Laid-Open No. 5-223711 JP-A-9-304257

  However, in recent years, there has been an increasing demand for shortening the development period of products and reducing development costs, and there has been a demand for a design act that realizes the development of reliable products in a short period of time and at a low cost. In response to this trend, it has become necessary to derive reliable analysis results in a short application period in the application of numerical analysis techniques to products as well.

  However, at present, it may be necessary to create a highly accurate finite element model in order to obtain a reasonable calculation result by analysis, and the time required for analysis may become very long as the analysis scale increases. is there. For this reason, depending on the case, there is a problem that it takes too much time to apply the numerical analysis method to obtain the analysis result with respect to the product development period, and the actual application becomes difficult.

  The present invention has been made in order to solve the above-described problems. Even when it is necessary to create a highly accurate finite element model or when the time required for the analysis is large, the finite element model corresponding to the analysis target is used. Data analysis device that achieves efficient analysis man-hours by reducing the man-hours and calculation time required for analysis by automatic simplification and deletion processing and automatic input processing of input conditions that require analysis, and its It is an object to provide a control method and a program.

In order to achieve the above object, a data analysis apparatus according to the present invention comprises the following arrangement. That is,
A data analysis device that supports the design of the structure and the buffer material against a drop problem by simulating the behavior of the structure and the buffer material due to a drop phenomenon of the structure packaged in the buffer material. ,
Buffer material behavior simulating means for simulating the behavior of the buffer material;
A structure frame structure behavior simulation means for simulating the behavior of the frame structure of the structure;
Display control means for controlling the display of an operation screen for executing the cushioning material behavior simulation means and the structure frame structure behavior simulation means;
When executing the buffer material behavior simulating means, on the operation screen, a display process for displaying the buffer material and the structure to be processed, a conversion process for converting the structure into a rigid body, and a simulation result Processing means for executing storage processing for storing in a memory the impact force that changes in time series applied to the structure that is the rigid body from the obtained cushioning material;
When the processing means executes the structure frame structure behavior simulation means, the processing means deletes the cushioning material displayed on the operation screen and sets the impact force stored in the memory as an input Execute.

In order to achieve the above object, a method for controlling a data analysis apparatus according to the present invention comprises the following arrangement. That is,
Method of controlling data analysis apparatus for supporting design of structure and buffer material against drop problem by simulating behavior of structure and buffer material due to falling phenomenon of structure packaged in buffer material Because
A buffer material behavior simulating step for simulating the behavior of the buffer material;
A structure frame structure behavior simulation step for simulating the behavior of the frame structure of the structure;
A display control step of controlling display on the display unit an operation screen for executing the buffer material behavior simulation step and the structure frame structure behavior simulation step;
When executing the buffer material behavior simulation step, on the operation screen, a display process for displaying the buffer material and the structure to be processed, a conversion process for converting the structure into a rigid body, and a simulation result A first processing step of executing a process of storing, in a memory, a time-series changing impact force applied to the rigid structure from the obtained cushioning material;
When executing the structure frame structure behavior simulating step, a second process of deleting the cushioning material displayed on the operation screen and setting the impact force stored in the memory as an input is executed. And processing steps.

In order to achieve the above object, a program according to the present invention comprises the following arrangement. That is,
By simulating the behavior of the structure and the cushioning material due to the falling phenomenon of the structure packaged in the cushioning material, the control of the data analysis device that supports the design of the structure and the cushioning material against the drop problem is controlled. A program to be realized,
A program code of a buffer material simulation process for simulating the behavior of the buffer material;
A program code of a structure frame structure behavior simulation step for simulating the behavior of the frame structure of the structure;
A program code for a display control step for controlling display on the display unit an operation screen for executing the buffer material behavior simulation step and the structure frame structure behavior simulation step;
When executing the buffer material behavior simulation step, according to the operation screen, a display process for displaying the buffer material and the structure to be processed, a conversion process for converting the structure into a rigid body, and a simulation result A program code of a first processing step for executing a process of storing, in a memory, a time-series changing impact force applied to the rigid structure from the obtained cushioning material;
And when performing the said structure frame structure behavior simulation process, while deleting the shock absorbing material currently displayed on the said operation screen, the process which sets the said impact force stored in the said memory as an input is performed And a program code for the second processing step.

  According to the present invention, when it is necessary to create a highly accurate finite element model or when the time required for the analysis is large, automatic simplification and deletion processing of the finite element model according to the analysis target, It is possible to provide a data analysis apparatus, a control method thereof, and a program for achieving efficiency of analysis man-hours by reducing man-hours and calculation time required for analysis by automatic input processing of input conditions that require analysis.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1A is a diagram showing a processing configuration of a data analysis system according to an embodiment of the present invention.

  The data analysis system of FIG. 1A simulates the behavior of the cushioning material and the structure frame structure due to the falling phenomenon of the structure wrapped in the cushioning material, so that the structure design and cushioning material design for the drop problem can be performed. Realize supporting drop impact analysis system.

  This data analysis system is roughly divided into four configurations: a model creation unit 1, a condition setting unit 2, an analysis unit 3, and a result display unit 4. The analysis unit 3 is further configured by two simulation units, a buffer material behavior simulation unit 5 and a structure frame structure behavior simulation unit 6.

  The model creating unit 1 represents the structural frame structure components and the cushioning material by a finite element model including finite elements and nodes. The condition setting unit 2 inputs simulation conditions relating to simulation such as material characteristics, physical characteristics, and dropping conditions related to structural components and cushioning materials of the structure frame structure. The analysis unit 3 calculates the behavior of the structure frame structure. The result display unit 4 displays the analysis result of the analysis unit 3.

  In addition, the buffer material behavior simulation unit 5 of the analysis unit 3 automatically converts the structure into a rigid body and executes the buffer material behavior simulation from the buffer material obtained by the buffer material behavior simulation. It has a process for storing in a memory the impact force that changes in time series applied to a rigid structure.

  Further, the structure frame structure simulation unit 6 of the analysis unit 3 automatically deletes the cushioning material and automatically inputs the impact force stored in the memory when executing the structure frame structure behavior simulation. The process to set automatically.

  The model creation unit 1 obtains data to be processed from the data related to the structural frame structure components and the buffer material stored in advance in a memory or the like, and based on the data, the model frame structure Create finite element models for components and cushioning materials. Further, this memory is realized by, for example, the RAM 1202 and the HDD 1204 described with reference to FIG. 1B.

  Next, a hardware configuration for realizing the data analysis system will be described with reference to FIG. 1B.

  FIG. 1B is a diagram showing a hardware configuration for realizing the data analysis system according to the embodiment of the present invention.

  A CPU 1201 controls the entire terminal (computer) using programs and data stored in the RAM 1202 and the ROM 1203, and executes each process described later performed by the parameter adjustment apparatus 200 to which the present computer is applied. .

  A RAM 1202 has an area for temporarily storing programs and data loaded from an HDD (Hard Disk Drive) 1204 and a work area used by the CPU 1201 to perform various processes.

  A ROM 1203 stores various programs such as a computer boot program and BIOS. Reference numeral 1204 denotes an HDD (Hard Disk Drive), which stores various data such as an OS (Operating System) and programs and data for causing the CPU 1201 to execute processes described later performed by a data analysis system to which the computer is applied. These are read into the RAM 1202 and executed under the control of the CPU 1201 as necessary.

  Reference numeral 1205 denotes a network I / F (interface) for connecting a computer to the network 300. The computer can perform data communication with an external device via the network I / F 1205.

  A storage medium drive 1206 includes a CD-ROM, CD-R / RW, DVD-ROM, DVD-R / RW, DVD-RAM, and the like.

  Reference numeral 1207 denotes a pointing device, and 1208 denotes a keyboard, which can input various instructions to the CPU 1201. These are processed as an input unit (user I / F unit).

  Reference numeral 1209 denotes a video I / F (interface), to which a display device 1210 is connected. The display device 1210 includes a CRT, a liquid crystal screen, and the like, and has a process of displaying information such as characters and images on the display screen based on a signal transmitted via the video I / F 1209.

  Reference numeral 1211 denotes an external device I / F (interface), which is a port for connecting a peripheral device to the computer. Through this external device I / F 1211, the computer can be configured with various interfaces such as SCSI, USB, IEEE 1394, etc. capable of transmitting / receiving data to / from peripheral devices, and usually a plurality of external devices I / F. The connection form with the peripheral device may be wired or wireless.

  Next, an operation screen for realizing the data analysis system of the present embodiment will be described with reference to FIG.

  FIG. 2 is a diagram showing the configuration of the operation screen of the data analysis system according to the embodiment of the present invention.

  The operation screen 100 displayed on the display device 1210 under the control of the CPU 1201 includes a menu bar 7 for switching various processes, a sub-configuration menu 8 for various processes, a graphic screen 9 on which the created finite element model and processing results are displayed. The command field 10 is used for outputting a system message and inputting a numerical value as required.

  In the menu bar 7, various button controls to which various processes are assigned are configured. Here, button controls (model creation button 7a, condition setting button 7b, analysis button 7c, and result display button 7d) for realizing the processes of the model creation unit 1, the condition setting unit 2, the analysis unit 3, and the result display unit 4 are provided. It is configured.

  The operation on the operation screen 100 can be realized by using a cursor (not shown) displayed on the screen or a keyboard 1208 by the pointing device 1207, for example.

  First, the operation of the model creation unit 1 will be described.

  When the model creation button 7a in the menu bar 7 is operated to create a finite element model necessary for the analysis, the model creation unit 1 displays the button control shown in FIG. 3 on the sub-configuration menu 8 of the operation screen 100. To do.

  In FIG. 3, the sub-configuration menu 8 includes processing buttons for creating a finite element model based on the shape of an actual structure or cushioning material, such as an element creation button 8A, a node creation button 8B, and a correction button 8C. Composed. When the operation of each processing button is performed from the sub-configuration menu 8, the processing result by the allocated processing is reflected on the graphic screen 9.

  In addition, in the graphic screen 9 of FIG. 3, the structure 201 and the buffer material 202 are shown as an example.

  Further, the control for executing various processes is not limited to the button control, and may be realized by other controls such as a menu control.

  Next, after the creation of the finite element model by the model creation unit 1 is completed, the process proceeds to the operation of the condition setting unit 2.

  The transition to the condition setting unit 2 is performed by operating the condition setting button 7b in the menu bar 7, and as a result, the material property definition button 8D and the physical property definition button are displayed in the sub-configuration menu 8 as shown in FIG. Processing buttons for setting conditions such as 8E and drop condition definition button 8F are displayed. By performing condition setting using the various processing buttons in the sub-configuration menu 8, the condition setting for the finite element model created in the model creation unit 1 is completed, and the analysis can be started.

  Transition to the operation of the analysis unit 3 is performed by operating the analysis button 7c in the menu bar 7, and as a result, as shown in FIG. A behavior simulation button 8H is displayed.

  A process of automatically converting a structure to a rigid body when simulating the behavior of the cushioning material will be described with reference to FIG.

  When the shock absorber behavior simulation button 8G in the sub-configuration menu 8 of FIG. 5 is selected, as shown in FIG. 6, a rigid-body conversion button 8I, which is a conversion process to a rigid body, and a calculation execution button are displayed in the sub-configuration menu 8. 8J, impact force storage button 8K is displayed. Here, when the rigid body conversion button 8I is selected, the physical properties of the parts constituting the structure in the finite element model created by the model creating unit 1 are automatically changed to rigid bodies.

  When the conversion to the rigid body is completed, the calculation can be executed. When the calculation execution button 8J in the sub-configuration menu 8 in FIG. 6 is selected, a program for solving the motion equation and calculating the buffer material behavior is executed. .

  Next, a process for storing a time-series impact force applied from the buffer material to the rigid structure, which is obtained from the buffer material behavior simulation result, will be described with reference to FIG.

  When the calculation of the shock absorbing material behavior is completed, the impact force storing button 8K in the sub-configuration menu 8 can be used. When this is selected, the structure that is obtained from the shock absorbing material behavior simulation and is a rigid body from the shock absorbing material. The impact force changing in time series applied to is stored in the memory in the following three formats.

  (1) The total force applied to each node at each contact portion between the structure and the cushioning material and the contact area are converted into pressure, and the time-series change in pressure is stored as information on the time-series change in impact force.

  (2) The time series change of the force applied to each node at each contact portion between the structure and the cushioning material is stored as information on the time series change of the impact force.

  (3) The time series change of the pressure applied to each element at each contact portion between the structure and the buffer material is stored as information of the time series change of the impact force.

  As described above, the buffer material behavior simulation in the analysis unit 3 is completed, and subsequently, the structure frame structure behavior simulation can be performed.

  Next, when executing the structural frame structure behavior simulation based on FIG. 8, the buffer material is automatically deleted from the graphic screen, and the impact force obtained from the shock material behavior simulation result is automatically input. Will be described.

  When the analysis button 7c in the menu bar 7 is operated, a buffer material behavior simulation button 8G and a frame structure behavior simulation button 8H are displayed in the sub-configuration menu 8, as shown in FIG. When the frame structure behavior simulation button 8H is selected from among them, the finite element model constituting the cushioning material 202 is automatically deleted when this button is selected, and only the finite element model of the structure 201 is displayed on the graphic screen. 9 is displayed.

  At the same time, as shown in FIG. 9, the sub-configuration menu 8 displays a contact surface pressure button 8L, each nodal pressure button 8M, each element pressure button 8N, and a calculation execution button 8O, which are selection menus of impact force. Regarding these buttons, the contact surface pressure button 8L is (1), each node pressure button 8M is (2), and each element pressure button 8N is ( It corresponds to 3). When an impact force is selected from the menu, it is automatically set to the contact portion with the buffer material in the finite element model of the frame structure as input information of the frame structure behavior simulation.

  When this setting is completed, the calculation can be executed. By selecting the calculation execution button 8O in the sub-configuration menu 8 of FIG. 9, a program for solving the equation of motion and calculating the behavior of the structure frame structure is executed. Is done.

  In addition, in FIG. 9, the example at the time of operating the contact surface pressure button 8L is shown, In this case, in the structure 201, the arrow which shows the position (contact part with a shock absorbing material) that the contact surface pressure generate | occur | produces. The image 203 is displayed (set), and the display direction is changed according to the position where the contact surface pressure is generated. In FIG. 9, the display direction is reversed upside down with respect to the structure 201 of FIG.

  The operation of the result display unit 4 is performed by operating the result display button 7d in the menu bar 7. When the result display button 7d is operated, processing buttons for displaying results such as a displacement / contour display button 8P and a plot display button 8Q are displayed in the sub-configuration menu 8 as shown in FIG. In this way, the result display unit 4 can evaluate the behavior of the cushioning material and the structure frame structure.

  As described above, according to the present embodiment, it is possible to achieve high accuracy by realizing automatic simplification and deletion of a finite element model and automatic input of an input condition that requires analysis according to an analysis target. Even when it is necessary to create a finite element model or when the time required for the analysis is large, it is possible to reduce the man-hours and calculation time required for the analysis. In addition, by improving the efficiency of the analysis man-hours, it is possible to efficiently evaluate the behavior of the buffer material and the structure frame structure.

  Although the embodiments have been described in detail above, the present invention can take an embodiment as, for example, a system, an apparatus, a method, a program, or a storage medium, and specifically includes a plurality of devices. The present invention may be applied to a system that is configured, or may be applied to an apparatus that includes a single device.

  The present invention supplies a software program (in the embodiment, a program corresponding to the flowchart shown in the drawing) to the system or apparatus directly or remotely, and the computer of the system or apparatus implements the processing of the above-described embodiment. Is also achieved by reading and executing the supplied program code.

  Accordingly, since the processing of the present invention is implemented by a computer, the program code installed in the computer also implements the present invention. That is, the present invention includes a computer program itself for realizing the processing of the present invention.

  In that case, as long as it has processing of a program, it may be in the form of object code, a program executed by an interpreter, script data supplied to the OS, or the like.

  As a recording medium for supplying the program, for example, floppy (registered trademark) disk, hard disk, optical disk, magneto-optical disk, MO, CD-ROM, CD-R, CD-RW, magnetic tape, nonvolatile memory card ROM, DVD (DVD-ROM, DVD-R) and the like.

  As another program supply method, a client computer browser is used to connect to an Internet homepage, and the computer program of the present invention itself or a compressed file including automatic installation processing is downloaded from the homepage to a recording medium such as a hard disk. Can also be supplied. It can also be realized by dividing the program code constituting the program of the present invention into a plurality of files and downloading each file from a different homepage. That is, a WWW server that allows a plurality of users to download a program file for realizing the processing of the present invention on a computer is also included in the present invention.

  In addition, the program of the present invention is encrypted, stored in a storage medium such as a CD-ROM, distributed to users, and key information for decryption is downloaded from a homepage via the Internet to users who have cleared predetermined conditions. It is also possible to execute the encrypted program by using the key information and install the program on a computer.

  In addition, the computer executes the read program to realize the processing of the above-described embodiment, and an OS running on the computer based on an instruction of the program causes a part of the actual processing. Alternatively, the processing of the above-described embodiment can be realized by performing all of the processing.

  Furthermore, after the program read from the recording medium is written into a memory provided in a processing expansion board inserted into the computer or a processing expansion unit connected to the computer, the processing expansion board or The CPU or the like provided in the processing expansion unit performs part or all of the actual processing, and the processing of the above-described embodiment is also realized by this processing.

It is a figure which shows the processing structure of the data analysis system of embodiment of this invention. It is a figure which shows the hardware constitutions which implement | achieve the data analysis system of embodiment of this invention. It is a figure which shows the structure of the operation screen of the data analysis system of embodiment of this invention. It is a figure which shows an example of the operation screen in the case of performing operation of the model preparation part of embodiment of this invention. It is a figure which shows an example of the operation screen in the case of performing operation of the condition setting part of embodiment of this invention. It is a figure which shows an example of the operation screen in the case of performing operation of the analysis part of embodiment of this invention. It is a figure for demonstrating the buffer material behavior simulation process of embodiment of this invention. It is a figure for demonstrating the buffer material behavior simulation process of embodiment of this invention. It is a figure for demonstrating the buffer material behavior simulation process of embodiment of this invention. It is a figure for demonstrating the buffer material behavior simulation process of embodiment of this invention. It is a figure which shows an example of the operation screen in the case of operating the result display part of embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Model creation part 2 Condition setting part 3 Analysis part 4 Result display part 5 Buffer material behavior simulation part 6 Structure frame structure simulation part

Claims (8)

A data analysis device that supports the design of the structure and the buffer material against a drop problem by simulating the behavior of the structure and the buffer material due to a drop phenomenon of the structure packaged in the buffer material. ,
Buffer material behavior simulating means for simulating the behavior of the buffer material;
A structure frame structure behavior simulation means for simulating the behavior of the frame structure of the structure;
Display control means for controlling the display of an operation screen for executing the cushioning material behavior simulation means and the structure frame structure behavior simulation means;
When executing the buffer material behavior simulating means, on the operation screen, a display process for displaying the buffer material and the structure to be processed, a conversion process for converting the structure into a rigid body, and a simulation result Processing means for executing storage processing for storing in a memory the impact force that changes in time series applied to the structure that is the rigid body from the obtained cushioning material;
When the processing means executes the structure frame structure behavior simulation means, the processing means deletes the cushioning material displayed on the operation screen and sets the impact force stored in the memory as an input A data analysis apparatus characterized by executing The data analysis apparatus according to claim 1, wherein the conversion process changes a physical property of a part constituting the structure. The storing process converts the total force applied to each node at each contact portion of the structure and the cushioning material and the contact area into pressure, and converts the time series change of the pressure into the time series change of the impact force. The data analysis apparatus according to claim 1, wherein the data analysis apparatus stores the information in the memory. The storage process stores, in the memory, time series changes in force applied to each node at each contact portion between the structure and the cushioning material as information on time series changes in the impact force. Item 4. The data analysis device according to Item 1. The storage process stores a time-series change in pressure applied to each element at each contact portion between the structure and the buffer material in the memory as information on a time-series change in the impact force. Item 4. The data analysis device according to Item 1. The setting process includes a selection process for selecting information stored in the memory as input information to the structure frame structure behavior simulating means,
Information selected by the selection process is set as input information to the structure frame structure behavior simulating means in a contact portion with the cushioning material in the frame structure of the structure displayed on the operation screen. The data analysis apparatus according to claim 1, wherein: Method of controlling data analysis apparatus for supporting design of structure and buffer material against drop problem by simulating behavior of structure and buffer material due to falling phenomenon of structure packaged in buffer material Because
A buffer material behavior simulating step for simulating the behavior of the buffer material;
A structure frame structure behavior simulation step for simulating the behavior of the frame structure of the structure;
A display control step of controlling display on the display unit an operation screen for executing the buffer material behavior simulation step and the structure frame structure behavior simulation step;
When executing the buffer material behavior simulation step, on the operation screen, a display process for displaying the buffer material and the structure to be processed, a conversion process for converting the structure into a rigid body, and a simulation result A first processing step of executing a process of storing, in a memory, a time-series changing impact force applied to the rigid structure from the obtained cushioning material;
When executing the structure frame structure behavior simulating step, a second process of deleting the cushioning material displayed on the operation screen and setting the impact force stored in the memory as an input is executed. A method for controlling a data analysis apparatus, comprising: By simulating the behavior of the structure and the cushioning material due to the falling phenomenon of the structure packaged in the cushioning material, the control of the data analysis device that supports the design of the structure and the cushioning material against the drop problem can be controlled. A program to be realized,
A program code of a buffer material simulation process for simulating the behavior of the buffer material;
A program code of a structure frame structure behavior simulation step for simulating the behavior of the frame structure of the structure;
A program code with a display control step for controlling display on an operation screen for executing the buffer material behavior simulation step and the structure frame structure behavior simulation step;
When executing the buffer material behavior simulation step, according to the operation screen, a display process for displaying the buffer material and the structure to be processed, a conversion process for converting the structure into a rigid body, and a simulation result A program code of a first processing step for executing a process of storing, in a memory, a time-series changing impact force applied to the rigid structure from the obtained cushioning material;
And when performing the said structure frame structure behavior simulation process, while deleting the shock absorbing material currently displayed on the said operation screen, the process which sets the said impact force stored in the said memory as an input is performed And a program code for the second processing step.

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