Parameter study of numerical analysis on low-velocity impact of GLARE 5 fibre-metal laminates

摘要

The impact performance play an important role to marine material. A numerical methodology including user material subroutine VUMAT, Johnson-Cook flow stress model and surface-based cohesive behaviour is employed to simulate the damage of the impact of GLARE 5 fibre-metal laminates (FML). Not only histories of absorbed energy, deflection, contact force are presented in our simulation, but the interface delamination is also investigated. After parameter study, suitable fracture energy in surface-based cohesive behaviour was found.