Stress Singularity in Three-Phase Bonded Structure

[+] Author and Article Information
Hideo Koguchi, Tadanobu Inoue, Toshio Yada

Department of Mechanical Engineering, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata, 940-21, Japan

J. Appl. Mech 63(2), 252-258 (Jun 01, 1996) (7 pages) doi:10.1115/1.2788857 History: Received September 13, 1993; Revised February 24, 1995; Online October 26, 2007


The plane problem of three-phase materials consisting of three isotropic homogeneous wedges with arbitrary angles, which are with two interfaces and two free surfaces, is analyzed under arbitrary normal and shearing tractions by the theory of elasticity. An eigenequation to examine the order of stress singularity at the apex in the three-phase bonded structure is analytically derived. In particular, this paper emphasizes to investigate the order of singularity in the stress field at the apex when materials of both side regions against intermediate region in three regions are identical. For several bonded wedge geometries, it is demonstrated how the order of stress singularity varies with material pairs. Finally, it is shown that the bonding order of materials also influences on the order of stress singularity in the three-phase bonded structure.

Copyright © 1996 by The American Society of Mechanical Engineers
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