Dynamic Buckling of Laminated Composite Beams Resting on Elastic Foundation under Thermal and Mechanical Load<br/>

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Dynamic Buckling of Laminated Composite Beams Resting on Elastic Foundation under Thermal and Mechanical Load

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 50765 (45)
University: Sharif University of Technology
Department: Aerospace Engineering
Advisor(s): Kouchakzadeh, Mohammad Ali
Abstract:
In this study, static and dynamic buckling of laminated composite beams resting on an elastic foundation under thermal and mechanical load is studied. Beam is resting on an elastic foundation with hardening/softening term. Nonlinear governing equations are obtained based on the energy method and are solved via the multi-term Galerkin method and the Newton-Raphson numerical method. Critical dynamic load is estimated by the Hoff Simitses criterion. The results are validated with the results of available articles in this field. In the following, the effects of different parameters of the problem on the results are examined. Results reveal that for a sufficiently stiff softening elastic foundation, the post-buckling equilibrium path becomes unstable. Furthermore, it can be concluded that the critical dynamic load for composite beams resting over an elastic foundation with softening term is less than the critical static load
Keywords:
Elastic Foundation ; Mechanical Loading ; Thermal Loading ; Dynamic Buckling ; Composite Beam

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