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RESEARCH PAPERS

An FFT-Based Method for Rough Surface Contact

[+] Author and Article Information
H. M. Stanley, T. Kato

Department of Mechanical Engineering, The University of Tokyo, Tokyo 113, Japan

J. Tribol 119(3), 481-485 (Jul 01, 1997) (5 pages) doi:10.1115/1.2833523 History: Received February 22, 1996; Revised July 03, 1996; Online January 24, 2008

Abstract

Elastic contact between a rigid plane and a halfspace whose surface height is described by a bandwidth-limited Fourier series is considered. The surface normal displacements and contact pressures are found by a numerical technique that exploits the structure of the Fast Fourier Transform (FFT) and an exact result in linear elasticity. The multiscale nature of rough surface contact is implicit to the method, and features such as contact agglomeration and asperity interaction—a source of difficulty for asperity-based models—evolve naturally. Both two-dimensional (2-D) and three-dimensional (3-D) contact are handled with equal ease. Finally, the implementation is simple, compact, and fast.

Copyright © 1997 by The American Society of Mechanical Engineers
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