TRANSIENT DYNAMIC LARGE-DEFLECTION ANALYSIS OF PANEL STRUCTURE UNDER BLAST LOADING

The transient dynamic response of a panel structure subjected to blast loading was investigated, as simulated by the step function and the e xponentially decaying function. Based on the Bauer methodology, and ap plying Galerkin's method, the von Karman nonlinear equations of plates could be transformed into Duffing-type nonlinear ordinary differentia l equations and then solved by adopting the Lindstedt-Poincare perturb ation method. The complete analysis of square plates was carried out f or all-clamped and all-simply supported edge conditions. The results o f deflection history and stress resultants using one perturbation term were sufficiently correlated with results both from related literatur e and obtained by the finite-element method.