Effect of Material Properties on the Stability of Static Thermoelastic Contact

[+] Author and Article Information
Ronggang Zhang, J. R. Barber

Department of Mechanical Engineering and Applied Mechanics, University of Michigan, Ann Arbor, MI 48109-2125

J. Appl. Mech 57(2), 365-369 (Jun 01, 1990) (5 pages) doi:10.1115/1.2891998 History: Accepted March 27, 1989; Received March 27, 1989; Online March 31, 2008


When heat is conducted across an interface between two different materials, the interaction between thermoelastic distortion and thermal contact resistance can cause the system to be unstable. This paper investigates the influence of material properties on the stability criterion for an interface between two half planes. It is found that most material combinations exhibit one or other of two kinds of stability behavior. In one of these, the stability criterion is closely related to that for uniqueness of the steady-state solution and instability is only possible for one direction of heat flow. In the other, instability can occur for either direction of heat flow and in one case is characterized by the oscillatory growth of a pressure perturbation.

Copyright © 1990 by The American Society of Mechanical Engineers
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