“Postbuckling Behavior of Simply Supported IsoscelesRight Triangular Plate in Uniform Compression or Shear"

After buckling， the behavior of plates is quite different from that of compressed columns. Namely，the critical load for a column can be considered as the ultimate load，but a thin buckled plate can carry a much larger load than the critical load at which buckling begins. Therefore， it is of importance to investigate the postbuckling behavior of plates. This paper deals theoretically with the postbuckling behavior of simply snpported isosceles right triangular plate in the case of uniform compression or shear by using the Galerkin's method. Especially，a polynomial of coordinate variables x and y is used as an ew type of stress function in this paper. The relations between deflection， effective rigidity and load after buckling are c1arified