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RESEARCH PAPERS

Thermal Contact Resistance of Anisotropic Materials

[+] Author and Article Information
N. Vutz

Westinghouse Air Brake Co., Wilmerding, Pa.

S. W. Angrist

Department of Mechanical Engineering, Carnegie-Mellon University, Pittsburgh, Pa.

J. Heat Transfer 92(1), 17-20 (Feb 01, 1970) (4 pages) doi:10.1115/1.3449622 History: Received December 19, 1968; Revised April 08, 1969; Online August 11, 2010

Abstract

This work presents an extension of the understanding of thermal contact resistance to include anisotropic materials. The extension involves a mathematical geometric transformation which leaves the thermal currents unchanged while making the temperature distribution in the anisotropic materials soluble by previously published methods. The development of this transformation technique is presented, and the effect of material anisotropy is calculated for a set of interface orientations and material conductivities which characterize typical contact situations. The degree of material anisotropy and the orientation of the contact interface are shown to be important factors affecting the contact resistance in addition to surface roughness, material hardness, and contact load.

Copyright © 1970 by ASME
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