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Biaxial load effects in fracture mechanicsIt is found that the standard expressions for elastic stress and displacement in the crack-tip region (i.e., the so-called singular solution) cannot be considered to be approximations that are acceptable in a completely general sense. This conclusion is best illustrated by the instance of a biaxially loaded infinite sheet with a flat horizontal central crack, where the effect of load applied parallel to the plane of the crack appears entirely in the second terms of the series representations for local stresses and displacements. An elastoplastic finite-element analysis of the same biaxially loaded finite specimen geometry shows that the global energy release rate, the J-integral, the plastic stress and strain intensity factors (in the sense of Hilton and Hutchinson), and the size of the crack border region plastic yield, all have pronounced biaxial load dependence.
Document ID
19780058680
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Liebowitz, H.
(George Washington Univ. Washington, DC, United States)
Lee, J. D.
(George Washington Univ. Washington, DC, United States)
Eftis, J.
(George Washington University Washington, D.C., United States)
Date Acquired
August 9, 2013
Publication Date
January 1, 1977
Subject Category
Structural Mechanics
Meeting Information
Meeting: International Conference on Fracture Mechanics and Technology
Country: Hong Kong
Start Date: March 21, 1977
End Date: March 25, 1977
Accession Number
78A42589
Funding Number(s)
CONTRACT_GRANT: NGL-09-010-053
CONTRACT_GRANT: N00014-75-C-0946
CONTRACT_GRANT: AF-AFOSR-76-3099
Distribution Limits
Public
Copyright
Other

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