BUCKLING MODE-CHANGE OF ANTISYMMETRIC ANGLE-PLY LAMINATES

This note deals with the buckling mode change of anti symmetric angle-ply laminates on the basis of YNS plate theory. The cusps phenomenon due to the change of buckling mode is presented in the relations of critical buckling loads versus some parameters, such as lamination angle, moduli ratio, aspect ratio, length-to-thickness ratio, and boundary condition. An analytical approach is applicable in conjunction with the concept of state-space to investigate the Levy-type solution of the title problem. The rank of final matrix, which is used to determine the critical buckling load, has been reduced to half of the relative one given in previous publications due to shifting the location of boundary conditions. Because the rank of matrix is smaller, the computing time is shorter and the calculation is of higher precision.