Presented in this paper are results of an analytical investigation pertaining to the buckling behavior of simply supported orthotropic rectangular plates under separately acting in-plane shear and bending forces. Pultruded fiber reinforced plastics are assumed to be specially orthotropic. The existing analytical solution developed for the isotropic plates is extended so that the orthotropic material properties can be taken into account in the plate buckling analyses. For the solution of the problems Rayleigh-Ritz method is employed. Graphical forms of results for finding the buckling strength of plates under in-plane shear and bending forces are presented.

Presented in this paper are results of an analytical investigation pertaining to the buckling behavior of simply supported orthotropic rectangular plates under separately acting in-plane shear and bending forces. Pultruded fiber reinforced plastics are assumed to be specially orthotropic. The existing analytical solution developed for the isotropic plates is extended so that the orthotropic material properties can be taken into account in the plate buckling analyses. For the solution of the problems Rayleigh-Ritz method is employed. Graphical forms of results for finding the buckling strength of plates under in-plane shear and bending forces are presented.