Abstract
A numerical approach combining the finite element method with two diferent stabilitycriteria namely the Budiansky and the phase-plane buckling criteria is used to study the dynamic bucklingphenomena of plate and shel structures subjected to sudden applied loading. In the finite element analysisanalysis. The dynamic responses of the plate and shell structures have ben investigated for diferentvalues of the plate and shell imperfection factors. The results indicate that the dynamic buckling time,which is normaly considered in predicting elasto-plastic buckling behavior, should be taken intoselecting proper control variables and incorporating them with two dynamic buckling criteria, the uniquedynamic buckling load can be obtained and the problems of ambiguity and contradiction of dynamicbuckling load of plate and shel structure can be resolved. KCI Citation Count: 7