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:
Mar. 02, 2010
Filed:
Oct. 13, 2006
Koushi Kumagai, Nagoya, JP;
Koushi Kumagai, Nagoya, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, TW;
Abstract
A spot weld fracture analysis method for a spot weld portion of three or more mutually superimposed plates that are spot-welded at a common welding point comprises an analysis step of executing an analysis by using a finite element model in which each plate is modeled by shell elements, and the shell elements corresponding to a spot weld point position of each plate are individually interconnected via beam elements, and a prediction step of finding an element force of a beam element that acts on a shell element relevant to a middle plate from a difference between the element forces of two beam elements connected to the shell element on a basis of the analysis result, and predicting a possibility of fracture of a spot weld between the middle plate and an adjacent plate by using the difference element force found from the difference.
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