Failure Analysis of CCF300/5428 Laminates under Low Velocity Impact based on Properties of Advanced Composite Material

摘要

A progressive damage model (PDM) composed by 3D FEM, Hashin and Ye failure criteria and Chang's degradation rules was established to deeply understand the failure of a new material system CCF300/5428 under low velocity impact. User defined subroutines were developed and embedded into the general FEA software package to carry out the failure analysis. Numerical simulations provide more information about the failure of composite laminates under low velocity impact, including initial damage status, damage propagation and final failure status. The history of the impact point displacement and various damage patterns were detailed studied.