Using M-integral for multi-cracked problems subjected to nonconservative and nonuniform crack surface tractions

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Title:	Using M-integral for multi-cracked problems subjected to nonconservative and nonuniform crack surface tractions
Authors:	Chang,JH;Wu,WH
Contributors:	土木工程學系
Keywords:	ENERGY-RELEASE RATES;CONSERVATION LAWS;SOLIDS;MODULI
Date:	2011
Issue Date:	2012-03-27 16:18:22 (UTC+8)
Publisher:	國立中央大學
Abstract:	In this paper, an energy parameter based on the concept of the M-integral is proposed for describing the fracture behavior of a multi-cracked solid subjected to nonconservative and nonuniform crack surface tractions. By using the M-integral with a suitably chosen closed contour, one can evaluate the 'surface creation energy' (SCE) required for creation of the stressed cracks. Also, it is demonstrated that the property of path-independence holds even under the action of crack surface tractions. Therefore, the singular stress field in the near-tip areas is not directly involved in the calculation so that a complicated finite element model around the crack tips is not required in evaluation of the M-integral. (C) 2011 Elsevier Ltd. All rights reserved.
Relation:	INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
Appears in Collections:	[土木工程學系 ] 期刊論文

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