Cavities vis-à-vis Rigid Inclusions and Some Related General Results in Plane Elasticity

[+] Author and Article Information
John Dundurs

Departments of Civil Engineering and Mechanical Engineering, Northwestern University, Evanston, Ill. 60208

J. Appl. Mech 56(4), 786-790 (Dec 01, 1989) (5 pages) doi:10.1115/1.3176172 History: Received April 26, 1988; Revised March 28, 1989; Online July 21, 2009


There is a strange feature of plane elasticity that seems to have gone unnoticed: The stresses in a body that contains rigid inclusions and is loaded by specified surface tractions depend on the Poisson ratio of the material. If the Poisson ratio in this stress field is set equal to +1 for plane strain, or +∞ for plane stress, the rigid inclusions become cavities for elastic constants within the physical range. The paper pursues this circumstance, and in doing so also produces several useful by-products that are connected with the stretching and curvature change of a boundary.

Copyright © 1989 by ASME
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