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Design and Analysis of Nonlinear Viscoelastic Damper

[+] Author Affiliations
Nariman Ashrafi, Mohamad Reza Eskafi

Islamic Azad University, Tehran, Iran

Paper No. AJK2011-03045, pp. 1399-1405; 7 pages
  • ASME-JSME-KSME 2011 Joint Fluids Engineering Conference
  • ASME-JSME-KSME 2011 Joint Fluids Engineering Conference: Volume 1, Symposia – Parts A, B, C, and D
  • Hamamatsu, Japan, July 24–29, 2011
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 978-0-7918-4440-3
  • Copyright © 2011 by JSME


A custom-made nonlinear viscoelastic damper is designed for several industrial applications. The damper is structurally similar to typical commercial dampers and the design is solely based on the choice of the viscoelastic material used as damping agent in the damper. With rheological parameters of a selected material from experiment, the coefficients of Johnson-Segalman constitutive equation model are evaluated by fitting the data. The problem was first formulated by writing the governing equations for the flow over flat plate. A numerical scheme of finite difference method is applied to solve the governing equations in time domain. The model is capable of predicting the nonlinear amplitude-dependent behavior of viscoelastic dampers under single and multiple-frequency excitations.

Copyright © 2011 by JSME
Topics: Dampers , Design



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