Finite Element Analysis of Thermal Stress at the Interface in Plastic/Brittle Multi-Layer Composite Materials

[+] Author and Article Information
Sui Lin, Xichen Yu, Wieliang Dai

Department of Mechanical Engineering, Concordia University, Montreal, Canada H3G 1M8

J. Mech. Des 112(1), 138-142 (Mar 01, 1990) (5 pages) doi:10.1115/1.2912571 History: Received March 01, 1989; Online June 02, 2008


The thermal stress of a multi-layer composite of plastic/brittle material was studied by the finite element method. High stress is found to be located on the interfaces between the plastic and the brittle material. 1-D and 2-D approaches for the determination of the temperature distributions in the multi-layer composite were examined. The 1-D approach gives an approximate 80 percent of error in temperature and a maximum of 20 percent of error in thermal stress in comparison with the 2-D approach. This suggests that, for a plastic/brittle composite, a 2-D approach for the determination of the temperature distribution should be taken in order to ensure the validity in the determination of both the temperature and stress distributions.

Copyright © 1990 by The American Society of Mechanical Engineers
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