抄録
This paper aims at investigating the effect of mechanical properties on high-velocity impact damage in CFRP (Carbon Fiber Reinforced Plastic) laminates. Dynamic finite element analysis is performed to achieve this end. Cohesive elements are introduced to express the delamination and splitting cracks while the maximum stress fracture criteria are employed to express the intralaminar failure in the analysis. Four material properties such as fiber strength, fiber elastic modulus, interlaminar strength and interlaminar fracture toughness are changed in the analysis as presumed dominant parameters. It is found that an increase in interlaminar strength rather than that in the interlaminar fracture toughness constrains delamination and that the fiber elastic modulus has the greatest effect on the perforation limit.
