Nonlinear dynamic response and damping performance of the viscoelastic composite core-based sandwich plates subjected to blast load

The current work provides the comparative study based on nonlinear dynamic responses and damping performance of the viscoelastic core-based sandwich (SW) plates subjected to blast load. The 0–3 viscoelastic composite (VEC), pure/conventional viscoelastic material (VEM), and viscoelastic particulate composite (VEPC) are taken individually as the viscoelastic core within SW plate. The governing equation of motion (GEM) of the overall SW plate is formulated by following layer wise theory and fraction order derivative viscoelastic model in finite element framework. The numerical solutions are obtained by solving the GEM with the conjunction of Newmark time integration scheme and direct iteration method. The effect of various boundary conditions, geometric parameters of 0–3 VEC, particulate volume fraction in VEPC are considered on dynamic responses and damping performance of SW plate. The numerical solutions disclose that 0–3 VEC and VEPC provide the significant damping compared to conventional VEM for passive damping control of SW plates subjected blast loads.