Dynamic large deflection analysis of elastic-plastic Mindlin circular plates (Q1341626)

The dynamic behavior of moderately thick elastic-plastic circular plates has been investigated within the context of the geometrical non-linear version of the Mindlin plate theory. For this purpose, an algorithm is developed based on the pseudo-normal mode superposition method. The plastic yielding is controlled by the von Mises yield criterion. In each time subinterval the non-linear terms are grouped together with external loads, and the pseudo-loads so-obtained are interpolated by a quadratic polynomial of time and are determined by an iterative procedure.