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An analytical and experimental study on dampening material effects on the dynamic behavior of free-free aluminum sheets

Khorasani, R ; Sharif University of Technology | 2021

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  1. Type of Document: Article
  2. DOI: 10.5267/j.esm.2021.1.002
  3. Publisher: Growing Science , 2021
  4. Abstract:
  5. This work aims to present an experimentally verified analytical solution to examine damping properties of systems including viscoelastic treatments. Although there are several methods for characterizing the behavior of three-layer damping systems, the RKU method is the most frequently used one. In this paper, this method is modified such a way that to be applied for a five-layer damping system. The achieved analytical relations are then employed to study the effects of a four-layer vibration-absorbing coating on the dynamic behavior of an aluminum sheet with free-free boundary conditions. Since the vibration-damping properties of the coating are unknowns, its loss factor and shear modulus are experimentally extracted based on the ASTM E756-05 standard method. The comparison between the analytical solution and performed modal tests expresses the efficiency of the presented method. © 2021 Growing Science Ltd. All rights reserved
  6. Keywords:
  7. Experimental method ; Dynamic behavior ; Dampening material ; Vibration absorbing coating ; Analytical solution
  8. Source: Engineering Solid Mechanics ; Volume 9, Issue 2 , 2021 , Pages 111-122 ; 22918744 (ISSN)
  9. URL: http://growingscience.com/beta/esm/4595-an-analytical-and-experimental-study-on-dampening-material-effects-on-the-dynamic-behavior-of-free-free-aluminum-sheets.html