The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 18, 2020
Filed:
Aug. 29, 2018
Ihi Corporation, Koto-ku, JP;
The University of Tokyo, Bunkyo-ku, JP;
Hiroyuki Hishida, Koto-ku, JP;
Koichi Inagaki, Koto-ku, JP;
Takeshi Nakamura, Koto-ku, JP;
Fumiaki Watanabe, Koto-ku, JP;
Kotaro Morioka, Bunkyo-ku, JP;
Yutaka Ohtake, Bunkyo-ku, JP;
Hiromasa Suzuki, Bunkyo-ku, JP;
Yukie Nagai, Bunkyo-ku, JP;
IHI CORPORATION, Koto-ku, JP;
The University of Tokyo, Bunkyo-ku, JP;
Abstract
A material shape simulation apparatus for simulating deformation of a three-dimensional woven fiber material is provided and includes: an orientation vector field generation unit generating a model shape orientation vector field on three-dimensional meshes of a model shape of a three-dimensional woven fiber material obtained by stacking sheets of two-dimensional woven fabric made of X-yarn and Y-yarn and binding them with Z-yarn; a parameterization unit that searches for a gradient vector for calculating a material shape orientation vector field, being an orientation vector field of a material shape before deformation of the model shape, from the model shape orientation vector field; and an orientation vector updating unit that updates the model shape orientation vector field by applying a condition of preserving a volume between the model shape orientation vector field and the material shape orientation vector field and a condition that neither the X-yarn nor the Y-yarn expands or contracts.