Abstract：Based on the four edges simply supported stiffened plate models with initial deflections,the numerical simulation of their dynamic buckling behavior was made under the in-plane impact loads.Through extracting the dynamic response displacement history curves of stiffened plates with different parameters such as initial deflection amplitude,the volume and aspect ratio of the stiffeners and the form of the stiffeners’ distribution,the P-Y curves based on the B-R criteria were drawn,and the influence of various parameters on the anti-buckling capacity of the structure was discussed.The results showed that the buckling behavior of stiffened plate with different load parameters presented significant differences;the dynamic buckling of the stiffened plates was very sensitive to initial deflections;the influence of the parameters of stiffeners on the dynamic buckling of stiffened plates has some rules to follow,which are of great practical value to the design of stiffened plate.
2012, Vol. 34 
