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上海电力的大学学报:2016,32(2):129-134,139
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内聚力模型在裂纹萌生及扩展中的应用
(上海电力学院 能源与机械工程学院)
Application of Cohesive Zone Model on Crack Initiation and Propagation
(School of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai 200090, China)
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投稿时间:2015-03-23    
中文摘要: 断裂及开裂是工程中严重的结构失效形式.结合传统断裂力学中应力强度因子K以及J积分,综述了内聚力模型基本思想及发展,分析了典型的内聚力模型及模型应用的局限性,总结了不同内聚力模型在有限元中的实现形式,概述了国内外学者关于内聚力模型解决不同材料裂纹萌生与扩展的研究状况,得出了内聚力模型可以用以研究裂纹尖端塑性变形、静力和疲劳载荷条件下的蠕变开裂,以及金属、岩土材料及混凝土、复合材料及纳米晶材料裂纹萌生与裂纹扩展的结论.
Abstract:Breaking and cracking are serious structural engineering failure modes.In combination with stress intensity factor K and J-integral of the traditional fracture mechanics,the basic idea and development of Cohesive Zone Model(CZM) are reviewed.The typical model of CZM and the limitation of the model application are analyzed.The implementation of the model in the form of finite element is summarized.The research of the domestic and foreign scholars about the CZM to solve different material crack initiation and extension are summarized.It is concluded that the CZM can be used to study the crack tip plasticity deformation,creep cracking under the condition of static and fatigue loading,as well as metal,geotechnical materials and concrete,composite materials and nanocrystalline materials crack intiation and crack propagantion.
文章编号:20160206     中图分类号:    文献标志码:
基金项目:国家自然科学基金(51201097).
引用文本:
孙家啟,纪冬梅,唐家志.内聚力模型在裂纹萌生及扩展中的应用[J].上海电力大学学报,2016,32(2):129-134,139.
SUN Jiaqi,JI Dongmei,TANG Jiazhi.Application of Cohesive Zone Model on Crack Initiation and Propagation[J].Journal of Shanghai University of Electric Power,2016,32(2):129-134,139.