Stress Singularities near Interface Crack Tip for Mode II of Orthotropic Bi-Material

Abstract:

Using the method of composite material complex and constructing new stress functions with complex singularity exponents, the problem of singularities near interface crack tip for mode II of orthotropic bi-material is studied. Boundary value problems of generalized bi-harmonic equations can be solved with the help of boundary conditions, then four kinds of stress singularities are deduced, 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 near the central-penetrated interface crack tip for mode II of orthotropic bi-material are obtained.

• Periodical: Advanced Materials Research (Volumes 1004-1005)
• Pages: 473-478
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1004-1005.473
• Online since: August 2014
• Authors: Mu Yang Li*, Jun Lin Li, Xiu Feng Xie
• Keywords: Bi-Material, Interface Crack of Mode II, Orthotropic, Singularity, Stress Intensity Factor (SIF)

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