LARGE PLASTIC DEFORMATION OF STRUCTURES DUE TO IMPACT -On the Bending and Shearing Deformation of a Rigid Plastic Simply Supported Beam

A theoretical study is made of the dynamic behavior and the permanent deformationsof a rigid-perfectly plastic beam under impact loading. The beam is simply supported andthe load is distributed along some portion of the beam axis. Bending and shearing de-formations are analysed on the basis of a simplified interaction curve relating shearingforce and bending moment for fully plastic action. The analysis shows that the sheareffects are of considerable importance when the loading width is approximately less thanone half of the whole span.