Bending and vibration studies of FG porous sandwich beam with viscoelastic boundary conditions: FE approach
Rakesh Patil, Sharnappa Joladarashi, Ravikiran Kadoli
Abstract
Bending and vibration characteristics of FG porous sandwich beam with viscoelastic boundary conditions are investigated. Complex shear modulus and associated loss factor are considered for the viscoelastic interlayer. The beam is constrained by viscoelastic supports (VES) at either end. Complex stiffness model is adopted for VES. The transverse deflection, natural frequency, loss factors, and mode shapes are obtained by varying VES stiffness. Furthermore, the study is extended to sandwich beams with various (H, O, V, and X) porosity patterns. The results convey that VES contribution in vibration damping is more predominant when the supports are less stiff (more viscous).
Topics & Concepts
ViscoelasticityMaterials scienceBending stiffnessDeflection (physics)VibrationStiffnessBeam (structure)Boundary value problemLoss factorComposite materialStructural engineeringNatural frequencyPorosityEngineeringAcousticsPhysicsClassical mechanicsDielectricQuantum mechanicsOptoelectronicsCellular and Composite StructuresComposite Structure Analysis and OptimizationVibration and Dynamic Analysis