关键词: strain rate effect, perfectly plastic, column dynamic buckling

Abstract: This paper introduces the strain-rate effects in the analysis of dynamic buckling of a perfectly plastic cohoumn. The corresponding differential equation of dynamics is deduced. The expressions of half-wave length of buckling mode. critical load and time of buckling are obtained. Discussion on the strain-rate effect on the plastic dynamic buckling of a column is presented. The results of this paper are compared with those of the theory and experiment in[4]

Key words: strain rate effect, perfectly plastic, column dynamic buckling