Patil, R.Joladarashi, S.Kadoli, R.2026-02-042023Mechanics of Advanced Materials and Structures, 2023, 30, 17, pp. 3588-360715376494https://doi.org/10.1080/15376494.2022.2079030https://idr.nitk.ac.in/handle/123456789/22218Bending 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). © 2022 Taylor & Francis Group, LLC.Boundary conditionsComposite beams and girdersFinite element methodFunctionally graded materialsSandwich structuresStiffnessViscoelasticityBending characteristicsFunctionally graded materialLoss factorPower-lawSandwich beamsVibration studiesVisco-elastic materialViscoelastic boundary conditionViscoelastic materialViscoelastic supportsPorosity