Title:
FRACTURE DETERMINATION DEVICE, FRACTURE DETERMINATION PROGRAM, AND METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2018/066673
Kind Code:
A1
Abstract:
A fracture determination device is provided which can predict fracture in an ultrahard steel material. This fracture determination device 1 is provided with: a reference forming limit value generation unit 22 which, on the basis of reference forming limit value information, generates a reference forming limit value for a reference element size, which is the element size used as a reference; a target forming limit value generation unit 23 which uses the tensile strength of the steel material to change the reference forming limit value, predict the forming limit value for the element size and generate a target forming limit value; a simulation running unit 24 which runs a deformation simulation using input information and which outputs deformation information including the strain of each of the elements; a principal strain determination unit 25 which determines the maximum principal strain and the minimum principal strain of each of the elements included in the deformation information; and a fracture determination unit 26 which, on the basis of the determined maximum principal strain and minimum principal strain of each of the elements and the target forming limit value, determines whether or not each element in the analysis model will fracture.
Inventors:
AITOH TAKAHIRO (JP)
NITTA JUN (JP)
KASEDA YOSHIYUKI (JP)
NITTA JUN (JP)
KASEDA YOSHIYUKI (JP)
Application Number:
PCT/JP2017/036387
Publication Date:
April 12, 2018
Filing Date:
October 05, 2017
Export Citation:
Assignee:
NIPPON STEEL & SUMITOMO METAL CORP (JP)
International Classes:
G01N3/00; G06F17/50
Foreign References:
| JP2007232714A | 2007-09-13 | |||
| JP2012166252A | 2012-09-06 | |||
| JP2014016807A | 2014-01-30 |
Other References:
See also references of EP 3524960A4
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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