Data processing: structural design – modeling – simulation – and em – Simulating nonelectrical device or system – Mechanical
Reexamination Certificate
2008-04-09
2011-12-13
Craig, Dwin M (Department: 2123)
Data processing: structural design, modeling, simulation, and em
Simulating nonelectrical device or system
Mechanical
C703S006000
Reexamination Certificate
active
08078442
ABSTRACT:
According to an aspect of an embodiment, a method comprises a screw fastening unit extracting step of extracting a screw fastening unit, in which at least two or more members are fastened by a screw, from a three-dimensional model, a shape changing step of changing each of circular arc surfaces of the screw, a screw through hole, and a screw hole disposed in the screw fastening unit to a polygonal polyhedron approximating the circular arc surface, a mesh creation step of creating an analysis model which is divided into a meshed analysis unit by allocation of polyhedral meshes along each of the edge surfaces of the screw, screw through hole, and screw hole which is changed to polyhedrons, and a contact definition step of setting the friction of a contact unit of the mesh-divided screw and screw hole to be infinite so as to achieve a fixed state.
REFERENCES:
patent: 5920491 (1999-07-01), Hibbitt et al.
patent: 6904395 (2005-06-01), DeJack et al.
patent: 7499845 (2009-03-01), Quincy et al.
patent: 9-245072 (1997-09-01), None
patent: 2000-268063 (2000-09-01), None
patent: 2001-265836 (2001-09-01), None
McCarthy et al., Three-dimensional finite element analysis of single-bolt, single-lap composite bolted joints: part I—model development and validation, Nov. 2004, Elsevier, Composite Structures 71, pp. 140-158.
Kinney et al., 2001. Three dimensional threaded fastener meshing algorithm. In Proceedings of the Sixth ACM Symposium on Solid Modeling and Applications (Ann Arbor, Michigan, United States). D. C. Anderson, Ed. SMA '01. ACM, New York, NY, 71-77.
PCT International Search Report mailed Jan. 6, 2006 for International Application No. PCT/JP2006/300077.
European Search Report dated Mar. 31, 2010 and issued in corresponding European Patent Application 06711465.2.
Inoke Misao
Shinomiya Rikako
Chad Aniss
Craig Dwin M
Fujitsu Limited
Staas & Halsey , LLP
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