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《Journal of Ningxia Normal University》 2014-03
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Stress Singularities Near Central-penetrated Interface Crack Tip for Mode Ⅱ of Bi-material

LI Junlin;LI Muyang;Taiyuan University of Science and Technology School of Applied Science;  
Constructing new stress functions with complex singularity exponents and using the method of composite material complex,the stress singularities of the interface crack tip of orthotropic bi-material are discussed. By solving the boundary value problems of partial differential equations,We get that there are four kinds of stress singularities near the interface crack tip of orthotropic bi-material,respectively,such as the constant singularity at λ =-1/2,the non-constant singularity at λ =-1/2+ ε,the constant oscillation singularity at λ =-1/2+ iε,and non-constant oscillation singularity at λ =-1/2+ c + iε. For each case,the analytic expressions for stress intensity factors,stress fields and displacement fields near the central-penetrated interface crack tip for mode II of orthotropic bi-material are obtained.
【CateGory Index】: O346.1
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