The dynamic response of laminate composite plate under low-velocity impact

摘要

In this investigation, the fiber-reinforced composite plates, without damage, subject to low velocity impact are studied by the use of finite element analysis (FE). To analyze the response of the plate, a Newmark time integration algorithm is used. In the present work the FE approach based on the modified Hertz contact law and Mindlin's plate theory tacking account of the transverse shear stress is developed. The contact force is calculated in conjunction with the loading and unloading processes. The time history of the impact process such as the acceleration, velocity of impactor and the target fiber-reinforced composite plate deflection due to an impact force acting at the center has been calculated. The effects of various parameters, such as impactor velocity, clamped or simple supported boundary conditions and lamination stacking sequence are examined.