Automatic Finite Element Mesh Generation Over Intersecting Rigid Body-Movable Subdomains for the Automation of Parametric Conceptual Design

[+] Author and Article Information
H. Yang, D. A. Hoeltzel

Department of Mechanical Engineering, Columbia University, New York, NY 10027

J. Mech. Des 116(4), 1049-1057 (Dec 01, 1994) (9 pages) doi:10.1115/1.2919486 History: Received September 01, 1991; Online June 02, 2008


An approach for the automatic generation and refinement of three-dimensional finite element meshes subdivided by multiply connected, rigid body movable subdomains has been developed. A combination of computational geometry and geometric modeling techniques have been employed to implement parametric computer-aided design based on the finite element method. Nonconvexity of an overall three-dimensional domain has been handled by combining convex geometric primitives as subdomains for the construction of a three-dimensional domain. A clipping technique is employed for determining intersection points between subdomains bounded by traingulated surface, following their rigid body movements. To demonstrate the utility of this approach to parametric redesign, a series of meshes that model a hip joint prosthesis and a reciprocating internal combustion engine, as assemblies of parametrically-defined geometric primitives, has been developed.

Copyright © 1994 by The American Society of Mechanical Engineers
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