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论文类型：期刊论文

发表时间：2016-12-01

发表刊物：ENGINEERING FRACTURE MECHANICS

收录刊物：SCIE、EI、Scopus

卷号：168

页面范围：11-25

ISSN号：0013-7944

关键字：Finite element discretized symplectic method; Interface fracture; Singularity; Stress intensity factor; Asymptotic analyses

摘要：An interface V-shape notch under bending loads is evaluated by a finite element discretized symplectic method. The stress intensity coefficients are extended to represent the singularities of notch-tip stress fields. The bimaterial notched plate is first meshed by conventional finite elements. Analytical symplectic eigenvectors are then used as the global interpolation functions so that the evaluation of stress singularities is reduced to solving undetermined coefficients of the symplectic series. Explicit expressions of stress fields and stress intensity coefficients are finally achieved simultaneously. Numerical examples are presented to validate the accuracy of the proposed method and new results are also given. (C) 2016 Elsevier Ltd. All rights reserved.