Vibration response of sandwich plate under Low-velocity impact loading

The vibration response of sandwich panels, under low-velocity impact, is presented by using finite element method (FEM) and Hertz contact low. The vibrations on the sandwich plate under the impact are evaluated using the Wigner-Ville distribution. As a result, by formulating a simple model involving the motion of a rigid impactor combined with dynamic equation of sandwich plate, the effect of initial impact velocity and the geometric properties of plate are identified. This numerical simulation that determine the impact force and estimate the behaviour under impact would be very helpful during the sandwich structures design. Keyword: Low-velocity/ Impact/ Hertz contact law / Impact force/ Wigner-Ville distribution/ Indentation