In this article, the design of a thick laminated composite plate subjected
to a thermal buckling load under a uniform temperature distribution is pres
ented. In design procedures of compose laminated plates for a maximum therm
al buckling load the finite element method based on shear deformation theor
y is used for the analysis of laminated plates. The optimal design for the
symmetric or antisymmetric laminated plates consisting of four layers with
a maximum thermal buckling load is performed. The fiber orientation and ply
thickness coefficient of plates are adopted as design variables. A one-dim
ensional search method is used to find optimal fiber orientation, and optim
al thickness is investigated.