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Orientador(es)
Resumo(s)
A force-based finite element formulation for the buckling analysis of two-layer composite beam structures with partial interaction is presented. The geometrically nonlinear beam elements possess a single flexible shear interface and each layer is modelled by means of Timoshenko's theory. The formulation relies on a hybrid variational principle of complementary energy only involving force/moment-like variables as fundamental unknown fields. The approximate field variables are selected such that all equilibrium differential equations are satisfied in strong form. The inter-element equilibrium, as well as Neumann boundary conditions are enforced by means of the Lagrangian-multiplier method. The accuracy and effectiveness of the proposed formulation is demonstrated through the analysis of several numerical tests.
Descrição
Palavras-chave
Layered beams Buckling analysis Timoshenko theory Partial interaction Complementary energy Finite elements
Contexto Educativo
Citação
SANTOS, Hugo A. F. A. – Buckling analysis of layered composite beams with interlayer slip: A force-based finite element formulation. Structures. ISSN 2352-0124. Vol. 25 (2020), pp. 542-553
Editora
Elsevier