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Free vibration analysis of sandwich conical shells with fractional viscoelastic core

Permoon, M. R ; Sharif University of Technology | 2019

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  1. Type of Document: Article
  2. DOI: 10.1016/j.compstruct.2019.01.082
  3. Publisher: Elsevier Ltd , 2019
  4. Abstract:
  5. The vibration characteristics, including fundamental frequencies and loss factors, of a sandwich conical shell with constrained viscoelastic layer is presented. The mechanical properties of viscoelastic core is modeled using Zener fractional order model. The equations of motion are derived employing Donnell representation of classical shell theory and solved using Raighly-Ritz method. The results are compared with other investigations and the effects of geometric parameters including the length to radius, radius to thickness and core to facing thickness on fundamental frequencies and loss factors are studied. © 2019 Elsevier Ltd
  6. Keywords:
  7. Fractional order constitutive relationship ; Fractional viscoelastic layer ; Free vibration ; Sandwich conical shell ; Equations of motion ; Natural frequencies ; Shells (structures) ; Viscoelasticity ; Conical shell ; Constitutive relationships ; Fractional order models ; Free-vibration analysis ; Fundamental frequencies ; Vibration characteristics ; Viscoelastic layers ; Vibration analysis
  8. Source: Composite Structures ; Volume 214 , 2019 , Pages 62-72 ; 02638223 (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/pii/S0263822318337188