Effect of Shear Deformation and Continuity on Delamination Modeling With Plate Elements

摘要

The objective of this paper is to quantify the effects of several critical assumptions and parameters on the computation of strain energy release rates for delamination and debond configurations modeled with plate elements. The issues studied are: element order and shear deformation assumptions, constraint of translational degrees of freedom, rotational degrees of freedom or both in the neighborhood of the crack tip, and continuity of material properties and section stiffness in the vicinity of the debond. The discussions that are presented in this paper are pertinent to both delamination and debond analyses for metallic and composite skin-stiffener configurations.