STUDY ON UNIAXIAL TENSILE PROGRESSIVE DAMAGE OF COMPOSITE LAMINATES WITH A HOLE

In response to the delamination phenomenon of composite materials,combined with a trilinear cohesive force model considering brittle fracture of materials,an Abaqus user subroutine was written using Fortran language to establish a three⁃dimensional progressive damage analysis model for composite laminates with a hole.Uniaxial tensile tests were conducted for four different layering methods,and modeling was conducted by using the commercial finite element analysis software Abaqus to analyze the hole edge damage of laminated plates.The results indicate that the proposed model can effectively predict the ultimate load and damage morphology of uniaxial tensile failure of composite laminates with a hole,and the failure zones of laminated plates are mainly concentrated at the hole edge.The research methods and results of this model can provide a reference for the design and maintenance of composite laminates.