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Advisor(s)
Abstract(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.
Description
Keywords
Layered beams Buckling analysis Timoshenko theory Partial interaction Complementary energy Finite elements
Citation
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
Publisher
Elsevier