Dynamic response of square sandwich plates with a metal foam core subjected to low-velocity impact

An analytical model is developed to predict the dynamic response of fully clamped square sandwich plate with metal foam core struck transversely by a heavy mass with low-velocity. Large deflection effect is incorporated in analysis by considering the interaction between the plastic bending and stretching. The analytical expressions are obtained for the structural deflection, the structural response time and the impact force. The finite element results validate the accuracy of the analytical model and good agreement is achieved.