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On the role of large elastic deformation in fracture initiation -- the cases of plane stress and plane strain

Chu, Billie (1965) On the role of large elastic deformation in fracture initiation -- the cases of plane stress and plane strain. California Institute of Technology , Pasadena, CA. (Submitted)

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In recent years there has been an increase in interest in the problems of strength and deformation of highly elastic materials. A number of simpler cases which have been solved indicate some markedly different characteristics from their counterparts in infinitesimal elasticity. References 1 and 2 discuss these cases in some detail. It seems natural therefore to ask whether in the problem areas of fracture in which the application of the infinitesimal theory of elasticity has met with some success in brittle elastic materials an equally marked difference in behavior would result if the possibility of large strains were included in the analyses. The question is more easily asked than answered since the inclusion of the possibility of large strains often complicates the problem mathematically many fold. Only recently, Williams and Schapery considered large strains in the instability analysis of the spherical cavity. One of their conclusions is that the strain at the cavity increases without bound as the cavity becomes vanishingly small, at a finite critical tensile loading at some large radius. The results of Williams and Schapery thus reinforce the suspicion held by many that large strain would play an important role in the study of fracture mechanics of highly elastic materials. The present paper is devoted to the analogous problem of a plane sheet containing a circular hole while at some large radius an axially symmetric tensile loading p per unit length of the stretched boundary is applied. Notations of references 2 and 3 will be generally adopted and, their explanations will be provided whenever necessary for clarity.

Item Type:Report or Paper (Technical Report)
Additional Information:The writer wishes to thank Professor M. L. Williams for his guidance in carrying out the work reported herein.
Group:Graduate Aeronautical Laboratories (Solid Mechanics), GALCIT
Other Numbering System:
Other Numbering System NameOther Numbering System ID
GALCIT Report SM65-21
Record Number:CaltechAUTHORS:20150116-121251291
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:53830
Deposited By: George Porter
Deposited On:16 Jan 2015 22:29
Last Modified:23 Nov 2021 00:29

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