An XFEM approach for modelling delamination in composite laminates

摘要: Abstract A First-order Shear Deformation Theory (FSDT) is chosen to simulate composite laminates in the linear and geometrically non-linear regimes. The formulation based on Equivalent Single Layer (ESL) theory that fails predict delamination onset laminates. lack of resolving three-dimensional states correct transverse stresses this model principally improved using post-processing. In order precisely compute interlaminar stresses, a non-frictional adhesive contact applied context eXtended Finite Element Method (XFEM). discontinuities are imposed within any arbitrary interface by enriching displacement field. Thus two sub-domains define plane discontinuity. Thereafter, aforementioned can be formulated at discontinued interface. Stress values retrieved nodal points constitutive equation. Consequently, formulations extended into softening regime growth as mixed-mode cohesive effect. accuracy proposed method predicting propagation demonstrated comparing results with ones available literature. By combining lower-order plate novel XFEM technique, able accurately calculate less computational effort.