XFEM modeling of short microfiber reinforced composites with cohesive interfaces
作者： Matthew G. Pike , Caglar Oskay
DOI: 10.1016/J.FINEL.2015.07.007
关键词: Matrix (mathematics) 、 Extended finite element method 、 Materials science 、 Fiber-reinforced composite 、 Deformation (engineering) 、 Fiber 、 Point (geometry) 、 Finite element method 、 Composite material 、 Microfiber 、 Structural engineering
摘要: This manuscript presents the formulation and implementation of a failure model for random short microfiber reinforced composite materials based on Extended Finite Element Method (XFEM). Elastic deformable inclusions modeled as objects with zero measure are incorporated into XFEM framework. A new debonding enrichment function is proposed to idealize progressive between fiber-matrix interfaces. The provides modeling strategy particularly suitable very high aspect ratio inclusions. fiber deformation approximated axial directly Lagrangian. within matrix material idealized using an integral-type nonlocal damage model. performance assessed by comparing predictions direct finite element method various configurations. numerical verification studies point accuracy characteristics approach. computational efficiency approach capability evaluate response microstructures that include large number HighlightsA extended presented in composites.A incorporate cohesive traction-separation behavior matrix.Fiber elastic
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