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    题名: Using M-integral for multi-cracked problems subjected to nonconservative and nonuniform crack surface tractions
    作者: Chang,JH;Wu,WH
    贡献者: 土木工程學系
    关键词: ENERGY-RELEASE RATES;CONSERVATION LAWS;SOLIDS;MODULI
    日期: 2011
    上传时间: 2012-03-27 16:18:22 (UTC+8)
    出版者: 國立中央大學
    摘要: 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.
    關聯: INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
    显示于类别:[土木工程學系 ] 期刊論文

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