A mixed SBFEM for stress singularities in nearly incompressible multi-materials
作者： Chao Li , Liyong Tong
DOI: 10.1016/J.COMPSTRUC.2015.05.011
关键词:
摘要: A mixed scaled boundary finite element formulation with near incompressibility.The does not require any mesh-dependent and stabilization parameters.It allows direction determination of generalized stress intensity factors.It can model strong discontinuities crack/notch, interface crack/notch tips.Avoids volumetric locking numerical oscillations at incompressible limit. In this paper, a based on the method (SBFEM) is proposed for nearly linear elasticity. The problems in multi-materials are analyzed. technique avoids non-physical pressure limit without requiring or parameters. field introduced but it independently unknown technique. displacement interpolated identically boundary. Standard polynomial shape functions high order line-elements used. governing equation SBFEM derived virtual work principle. displacement, fields along radial represented analytically, which permits factors to be directly evaluated by definition.
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