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1. (WO2017150087) MATERIAL SHAPE SIMULATION DEVICE, MATERIAL SHAPE SIMULATION METHOD, AND THREE-DIMENSIONAL WOVEN FIBER ARTICLE MANUFACTURING METHOD

Pub. No.:    WO/2017/150087    International Application No.:    PCT/JP2017/004287
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Tue Feb 07 00:59:59 CET 2017
IPC: G06F 17/50
Applicants: IHI CORPORATION
株式会社IHI
THE UNIVERSITY OF TOKYO
国立大学法人 東京大学
Inventors: HISHIDA, Hiroyuki
菱田 寛之
INAGAKI, Koichi
稲垣 宏一
NAKAMURA, Takeshi
中村 武志
WATANABE, Fumiaki
渡邉 文章
MORIOKA, Kotaro
森岡 浩太郎
OHTAKE, Yutaka
大竹 豊
SUZUKI, Hiromasa
鈴木 宏正
NAGAI, Yukie
長井 超慧
Title: MATERIAL SHAPE SIMULATION DEVICE, MATERIAL SHAPE SIMULATION METHOD, AND THREE-DIMENSIONAL WOVEN FIBER ARTICLE MANUFACTURING METHOD
Abstract:
[Problem] To provide a material shape simulation device that more accurately simulates deformation of a three-dimensional woven fiber material. [Solution] A material shape simulation device 100 equipped with: an orientation vector field generation unit 210 that generates a model shape orientation vector field with respect to a three-dimensional mesh with a model shape of a three-dimensional woven material wherein a plurality of two-dimensional woven fabrics comprising X-threads extending in the X-direction and Y-threads extending in the Y-direction are stacked on one another by means of Z-threads extending in the Z-direction; a parameterization unit 220 that searches for gradient vectors for calculating, from the model shape orientation vector field, a material shape orientation vector field, which is an orientation vector field for the material shape prior to deformation of the model shape; and an orientation vector updating unit 230 that updates the model shape orientation vector field by applying, between the model shape orientation vector field and the material shape orientation vector field, a condition under which the volume is preserved and a condition under which the X-threads and the Y-threads respectively do not expand or contract.