A two-dimensional model for crack closure effect in plates under bending

Murthy, M. V. V. ; Viswanath, S. ; Krishna Murty, A. V. ; Rao, K. P. (1988) A two-dimensional model for crack closure effect in plates under bending Engineering Fracture Mechanics, 29 (4). pp. 435-452. ISSN 0013-7944

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Official URL: http://linkinghub.elsevier.com/retrieve/pii/001379...

Related URL: http://dx.doi.org/10.1016/0013-7944(88)90031-8

Abstract

A two-dimensional model is proposed for taking into account the establishment of contact on the compression side of crack faces in plates under bending. An approximate but simple method is developed for evaluating reduction of stress intensity factor due to such 'crack closure'. Analysis is first carried out permitting interference of the crack faces. Contact forces are then introduced on the crack faces and their magnitudes determined from the consideration that the interference is just eliminated. The method is based partly on finite element analysis and partly on a continuum analysis using Irwin's solution for point loads on the crack line.

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ID Code:18104
Deposited On:17 Nov 2010 13:10
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