Singular Stress Field Near the Corner of Jointed Dissimilar Materials

[+] Author and Article Information
Dai-heng Chen

Faculty of Computer Science and Systems Engineering, Kyushu Institute of Technology, 680-4 Kawazu, Iizuka, 820 Japan

Hironobu Nisitani

Faculty of Engineering, Kyushu University, 6-10-1 Hakozaki, Fukuoka, 812 Japan

J. Appl. Mech 60(3), 607-613 (Sep 01, 1993) (7 pages) doi:10.1115/1.2900847 History: Received June 26, 1991; Revised June 04, 1992; Online March 31, 2008


In this paper, the characteristics of the stress field near a corner of jointed dissimilar materials are studied as a plane problem. It is found that the order of singularity is dependent not only on the elastic constants of materials and the local geometry of corner, but also on the deformation mode. The dependence of the order of singularity was established for the case of mode I and the case of mode II. An explicit closed-form expression is given for the singular stress field at the close vicinity of the corner, in which the stress field is expressed as a sum of the symmetric state with a stress singularity of 1/r 1-λ1 and the skew symmetric state with a stress singularity of 1/r 1-λ2 . When both λ1 and λ2 are real the singular stress field around the point singularity is defined in terms of two constants K 1 , λ1 , K 11 , λ2 , as in the case of crack problems.

Copyright © 1993 by The American Society of Mechanical Engineers
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