文章基本信息

标题：Relation between Effectiveness of the Non-Linear Crack Mechanics and Crack Length
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作者：Takahiro TERANISHI ; Hironobu NISITANI ; Kuniharu USHIJIMA 等
期刊名称：Journal of Computational Science and Technology
电子版ISSN：1881-6894
出版年度：2008
卷号：2
期号：1
页码：111-117
DOI：10.1299/jcst.2.111
出版社：The Japan Society of Mechanical Engineers
摘要：The non-linear crack mechanics (NLCM) was proposed by one of the authors, which gives a method for predicting the strength of a real object from the strength of specimens under large scale yielding condition. In NLCM, the plastic strain at a crack tip obtained by FEM is used as a measure of mechanical severity. In this study, the relation between the effectiveness of NLCM and the crack length is discussed based on FEM analyses of strips with a center crack subjected to tension. As the result, it was confirmed that NLCM is an effective way for predicting the strength of structures with a wide range of crack length a/w =0.1∼0.9 ( a : half crack length, w : half width of strip).
关键词：Plasticity;Crack;Finite Element Method;Non-Linear Crack Mechanics