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:
Jul. 14, 2015
Filed:
Jul. 17, 2009
Takayuki Yamada, Nagoya, JP;
Shinji Nishiwaki, Kyoto, JP;
Kazuhiro Izui, Kusatsu, JP;
Masataka Yoshimura, Kyoto, JP;
Takayuki Yamada, Nagoya, JP;
Shinji Nishiwaki, Kyoto, JP;
Kazuhiro Izui, Kusatsu, JP;
Masataka Yoshimura, Kyoto, JP;
KYOTO UNIVERSITY, Kyoto-shi, JP;
Abstract
The present invention enables structural optimization having a high degree of freedom, such as the allowance of a change in topology in a material domain Ω, and provides clear expression of the shape of optimum structures. The present invention defines a level set function φ; updates the level set function φ, under a predetermined constraint condition, so as to bring a performance of a structure, such as a rigidity, close to a target value; moves the boundary ∂Ω between the material domain Ω and a void domain; allows a change in topology in the material domain Ω, which is associated with the update of the level set function φ, to form a new void domain in the material domain Ω; and moves the boundary ∂Ω between the new void domain and the material domain Ω.