INSTABILITY PHENOMENA OF A RECTANGULAR ELASTIC PLATE UNDER BENDING AND SHEAR

This paper focuses on the instability phenomena of an elastic rectangu lar plate under pure bending which emerge after the occurrence of the primary buckling. The mechanisms of this instability behavior are inve stigated phenomenally throughout the analysis of load-deflection simul ations. The relationships between the characteristics of this instabil ity and the boundary conditions of a plate are also discussed. The eff ect of initial deflections on the post-buckling paths and secondary in stability phenomena is examined from the viewpoint of imperfection-sen sitivity. Finally, it is presented that a plate also shows the similar instability phenomena when subjected to unequal bending and shear.