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Title:
BREAKAGE EVALUATION METHOD, BREAKAGE EVALUATION PROGRAM, AND BREAKAGE EVALUATION DEVICE FOR SHEET MATERIAL
Document Type and Number:
Japanese Patent JP2007108138
Kind Code:
A
Abstract:

To provide a breakage evaluation method and the like for a sheet material capable of evaluating accurately the breakage of an edge portion of the sheet material.

A control part of this device is provided with a modeling part 210 for modeling an object comprising the sheet material, an edge detecting part 211 for detecting an edge of each element constituting an edge portion of a CAE model, a curvature computing part 212 for computing an average value of radii detected in the every edge to find a curvature in an edge side of the each element, and a primary evaluation part 213 for determining the possibility of the breakage in the edge portion of the sheet material, based on the curvature in the edge side of the each element, and based on a breakage critical strain.


Inventors:
WATANABE KENICHI
TACHIBANA YOSHIE
Application Number:
JP2005301929A
Publication Date:
April 26, 2007
Filing Date:
October 17, 2005
Export Citation:
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Assignee:
KOBE STEEL LTD
International Classes:
G01N3/08
Domestic Patent References:
JPH049638A1992-01-14
JP2000180326A2000-06-30
JPH08339396A1996-12-24
JP2005098720A2005-04-14
Attorney, Agent or Firm:
Etsushi Kotani
Takao Ito
Jiro Higuchi
Tamagushi Yukihisa



 
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