An Efficient Approach into Finite Element Method for Lateral Buckling Analysis of Fiber-Metal Laminates Tapered I-Beams

In this paper, lateral stability analysis of fiber-metal laminated (FML) doubly-symmetric tapered I-beams with symmetrical lay-up for all section walls is perused by presenting a new finite element solution. Vlasov’s thin-walled beam theory utilized to consider the bending–twisting coupling effect. Based on classical lamination as well energy method, total potential derived flexural displacements and twist angle. Using an auxiliary function, variational formulation then constructed only in terms To precisely determine 4*4 elastic buckling stiffness matrices, Hermitian cubic polynomial applied shape functions into resulting statement. The most beneficial feature present model provide two-node I-beam low number degrees freedom. Lateral strength FML profile having varying I-section has been calculated E-glass/epoxy composite aluminum metal. obtained results are compared solutions using ANSYS software showed excellent agreement them. Also, effects different consequential parameters such fiber orientation, sequence, metal volume fraction, web tapering ratio, transverse load height position resistance fixed-free subjected uniformly distributed comprehensively investigated.