A FAST TOOL FOR BUCKLING ANALYSIS OF STIFFENED PLATES

Francisco Alex Correia Monteiro¹; Eliseu Lucena Neto¹; Lucas Nobumichi Yshii¹

¹ Instituto Tecnológico de Aeronaútica

doi:10.20906/CPS/COB-2015-0977

Resumo

A fast tool for buckling analysis that can be used during the design phases of rectangular isotropic plates is presented. The plate is subjected to usual in-plane loading and its boundary edges can be elastically restrained against rotation by stiffeners. The solution is obtained by a Ritz procedure using displacement approximations derived from Legendre polynomials. Most boundary conditions may be introduced a posteriori into the discrete problem, in the same manner as is done in finite element procedures. Excellent accuracy are attested by numerical results.

Palavras-chave: buckling; stiffened plates; Ritz method