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Information processing device, method and program

An information processing device and program technology, which is applied in the fields of electrical digital data processing, special data processing applications, complex mathematical operations, etc.

Active Publication Date: 2015-05-06
TOYOTA CENT RES & DEV LAB INC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the more complex the material constitutive model, the more difficult is the analytical derivation, and if even a part of the calculation is incorrect, in the worst case there is a case where the solution diverges

Method used

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  • Information processing device, method and program
  • Information processing device, method and program
  • Information processing device, method and program

Examples

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Embodiment Construction

[0029] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0030] Such as figure 1 As shown, the information processing apparatus 10 related to the first reference example has a CPU 12, a ROM 14, a RAM 16, an HDD 18, a communication interface 20, and a bus 22 interconnecting these.

[0031] The CPU 12 executes various programs. Various programs and parameters, etc. are stored in the ROM 14 . The RAM 16 is used as a work area and the like when the CPU 12 executes various programs. Various programs, including a program for executing a derivative calculation processing routine described later, and various data are stored in the HDD 18 serving as a storage medium.

[0032] In the derivative calculation processing method of the information processing apparatus 10 in the first reference example, the first derivative value and the second derivative value of a function of one variable are calculated by using a...

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Abstract

For each (ij)-th component of a tensor, an equation that is denoted by DeltaF1 (ij) and that uses epsilon1 is computed on the basis of a function W(F) of an inputted tensor amount F and a value (F=F^) of the tensor amount F (312). For each (kl)-th component of a tensor, an equation that is denoted by ~DeltaF2 (k1) and that uses epsilon1 and epsilon2 is computed on the basis of the value (F=F^) of the tensor amount F (314). For each combination of an (ij)-th component and a (kl)-th component of a tensor, a function W(F^+DeltaF1 (ij)+~DeltaF2 (k1)) is computed by using the computed equation that is denoted by DeltaF1 (ij) and the computed equation that is denoted by ~DeltaF2 (k1) (316). For each (ij)-th component of a tensor, a coefficient of epsilon1 in the computed function W(F^+DeltaF1 (ij)+~DeltaF2 (k1)) is taken-out, and stress, that is based on a first order derivative with respect to the tensor amount F of the function W(F), is computed. For each combination of an (ij)-th component and a (kl)-th component of a tensor, a coefficient of epsilon1sepsilon2 in the function W(F^+DeltaF1 (ij)+~DeltaF2 (k1)) is taken-out, and a material Jacobian, that is based on a second order derivative with respect to the tensor amount F of the function W(F), is computed (318, 320).

Description

technical field [0001] The present invention relates to an information processing device, a method, and a program, and more particularly, to an information processing device and a program that perform calculation of a derivative of a function. Background technique [0002] In recent years, many high-performance, general-purpose finite element method (hereinafter, abbreviated as FEM) analysis software have been sold in the market. Efficient progression of design work utilizing these general-purpose software is being achieved quite typically at the manufacturing site. However, there are often situations in which the analytical work faced by the user requires special analytical techniques beyond the functional scope of these general-purpose software. [0003] To solve this problem, many general-purpose FEM analysis software provide user subroutine functions, enabling the user to perform customization and implement his own analysis techniques and models as general-purpose softw...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/10G06F17/50
CPCG06F17/10G06F30/23G06F2111/10
Inventor 田中真人表龙二笹川崇藤川正毅
Owner TOYOTA CENT RES & DEV LAB INC