Dynamic plastic behavior of circular plate using unified yield criterion

Dynamic plastic behavior of a rigid-plastic simply supported circular plate under moderate partial uniformly distributed impulsive load is complemente d by using a unified yield criterion which consists of a generic of convex piecewise linear yield criteria. Upper bound and lower bound plastic respon ses of the plate under rectangular pulse are obtained; response behavior of the plate with respect to the Mises criterion is derived by a proximal man ner. The inconstant circumferential moment distribution and the non-linear flow velocity distribution in the periods corresponding to the two motion p hases are suggested in this paper. Static and kinematic admissibility of th e dynamic plastic solutions is discussed and two types of moment profiles f or the plates under intense dynamic load are supposed for studying in the f uture. (C) 1999 Elsevier Science Ltd. All rights reserved.