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Natural frequency analysis of sigmoid functionally graded sandwich beams in the framework of high order shear deformation theory

Sandwich BeamsEngineeringMechanicsMechanical EngineeringStructural AnalysisNatural Frequency AnalysisStructural ApplicationSolid MechanicsStructural DesignStructural DynamicStructural OptimizationStructural MechanicsMaterial NonlinearitiesMechanics Of Materials