Customized response finite element model for crash test dummy and method

Patent metadata

Field	Value
Publication number	US-2018285516-A1
Application number	US-201815942200-A
Country	US
Kind code	A1
Filing date	Mar 30, 2018
Priority date	Apr 4, 2017
Publication date	Oct 4, 2018
Grant date	—

Abstract

A system for generating a customized response finite element model for a crash test dummy and the system is configured to implement a method of creating the customized response finite element model for the crash test dummy including the steps of selecting a plurality of finite element factors associated with a crash test dummy, selecting a performance parameter associated with the crash test dummy, and identifying a certification test value associated with the selected performance parameter. The method also includes the steps of determining a performance parameter value as a function of the plurality of finite element factors, determining an optimized factor value for each of the finite element factors to minimize a difference between the performance parameter value and the certification test value, and generating a customized response finite element model for the crash test dummy using the determined optimized value of each of the finite element factors.

First claim

What is claimed is:

1 . A computer-implemented method of creating a customized response finite element model for a crash test dummy, said method comprising the steps of:
selecting a plurality of finite element factors associated with a crash test dummy; selecting a performance parameter associated with the crash test dummy; identifying a certification test value associated with the selected performance parameter; determining a performance parameter value as a function of the plurality of finite element factors; determining an optimized factor value for each of the finite element factors to minimize a difference between the performance parameter value and the certification test value; and generating a customized response finite element model for the crash test dummy using the determined optimized value of each of the finite element factors.

2 . A computer-implemented method as set forth in claim 1 , wherein the performance parameter value is determined using a corresponding injury output measurement regression equation and each of the finite element factors.

3 . A computer-implemented method as set forth in claim 1 , wherein the corresponding injury output measurement regression equation was generated using design of experiments (DOE) factorial design in relation to the plurality of finite element factors.

4 . A computer-implemented method as set forth in claim 1 , wherein the plurality of finite element factors indicate physical attributes associated with the crash test dummy.

5 . A computer-implemented method as set forth in claim 1 , including the steps of:
selecting a plurality of performance parameters; determining a corresponding performance parameter value for each of the plurality of performance parameters as a function of the plurality of finite element factors; identifying a corresponding certification test value associated with each of the plurality of performance parameters; and determining the optimized value for each of the finite element factors to minimize the sum of squared errors between each performance parameter value and corresponding certification test value.

6 . A computer-implemented method as set forth in claim 5 , including the step of:
minimizing the sum of squared errors between each performance parameter value, the corresponding certification test value using the equation

Total
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1

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cal

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Y
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wherein, m is a total number of the selected plurality of parameter values, Y cal is the performance parameter value, and Y test is the certification test value.

7 . A computer-implemented method as set forth in claim 1 , wherein each of the optimized factor values is selected from a corresponding range of values, including a minimum factor value and a maximum factor value.

8 . A computer-implemented method as set forth in claim 1 , further comprising the steps of:
receiving a request to generate the customized response finite element model for the crash test dummy from a user computing device; accessing an element data file being stored in a database and selecting the plurality of finite element factors associated with the crash test dummy; accessing a performance parameter data file and selecting a plurality of performance parameters associated with the crash test dummy and identifying a parameter equation associated with each of the selected performance parameters; generating and displaying a finite element factor optimization screen including each selected performance parameter and each selected finite element factor; receiving a user-defined certification test value associated with each of the selected performance parameters via a user-input area displayed on the finite element factor optimization screen; and determining the optimized factor value for each of the finite element factors to minimize the sum of squared errors between each performance parameter value and each associated user-defined certification test value.

9 . A system for use in generating a customized response finite element model for a crash test dummy, comprising:
a database including an element data file and a performance parameter data file, the element data file including finite element factors, the performance parameter data file including performance parameters and associated parameter equations; a server computer configured to: receive a request to generate a customized response finite element model for a crash test dummy from a user computing device; access an element data file being stored in a database and select the plurality of finite element factors associated with the crash test dummy; access a performance parameter data file and select a plurality of performance parameters associated with the crash test dummy and identify a parameter equation associated with each of the selected performance parameters; generate and display a finite element factor optimization screen, including each selected performance parameter and each selected finite element factor; receive a user-defined certification test value associated with each of the selected performance parameters via a user-input area displayed on the finite element factor optimization screen; and determine an optimized factor value for each of the finite element factors to minimize the sum of squared errors between each performance parameter value and each associated user-defined certification test value.

10 . One or more non-transitory computer-readable storage media, having computer-executable instructions embodied thereon, wherein when executed by at least one processor, the computer-executable instructions cause the at least one processor to:
receive a request to generate a finite element model for a crash test dummy from a user computing device; access the element data file and select a plurality of finite element factors associated with the crash test dummy; access the performance parameter data file and select a plurality of performance parameters associated with the crash test dummy and identify a parameter equation associated with each of the selected performance parameters; generate and display a finite element factor optimization screen, including each selected performance parameter and each selected finite element factor; receive a user-defined certification test value associated with each of the selected performance parameters via a user-input area displayed on the finite element factor optimization screen; and determine an optimized factor value for each of the finite element factors to minimize the sum of squared errors between each performance parameter value and each associated user-defined certification test value.

11 .

Assignees

• Humanetics Innovative Solutions Inc

Inventors

• Shah Chirag

Classifications

• G06F30/23 Primary

  using finite element methods [FEM] or finite difference methods [FDM] · CPC title

• G06F30/15

  Vehicle, aircraft or watercraft design · CPC title

• G06F30/17

  Mechanical parametric or variational design · CPC title

• G06F17/16

  Matrix or vector computation {, e.g. matrix-matrix or matrix-vector multiplication, matrix factorization (matrix transposition G06F7/78)} · CPC title

• G06F17/5086 Primary

  Physics · mapped topic