Impact Deformation on curved nano composite panels

In this study, the low velocity impact response of cylindrically curved bi-layer panels is studied. A large number of parameters affect the impact dynamics, and many models have been used previously, these models can be classified as, energy-balance models; spring-mass models and complete models in which the dynamic behavior of the structure is exactly modeled. In this study a spring-mass model is used to evaluate the displacement response of the panel. This work uses the modified Hertzian contact model which is linearized form of general hertz contact law. Fourier series expansion is used to derive the governing equations of the panel. In this paper, the effects of the panel curvature, impact velocity and mass of impactor on the shell behavior under low-velocity impact are investigated. The results show that changing the panel radius of curvature will change the panel panel deformation. A numerical simulation analysis is used for result validation.