Nonlinear Response of Flexible Shell / Membrane Structures to Blast Load: Computational Modeling of Inflatable, Highly Flexible, Thin, Shell / Membrane Behavior Under Dynamic, Random Loading (Blast Load)

This research work presents the finite element (FE) modeling and dynamic response of Inflatable, thin, highly flexible shell/membrane structures to blast load, with application to collective protection systems. Temper Tents have pressurized Collective Protection System (CPS)(liner system), fitted to frame structures, provide protection against explosives and other harmful agents. These systems are being tested for the force protection standards against the explosions like air-blast. A nonlinear finite element analysis of shell/membrane structure is sought to computationally simulate the response of Temper tents. ANSYS, a commercial finite element software, is used here for this purpose. Nonlinear static and transient analysis is performed and dynamic response in terms of displacement history and dynamic stresses is computed. Design considerations are made based on the parametric design study.