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Analytical Solutions for Oscillation of Rectangular Plate on a Nonlinear Winkler Foundation

[+] Author Affiliations
Davood Younesian, Hassan Askari, Zia Saadatnia

Iran University of Science and Technology, Tehran, Iran

Ebrahim Esmailzadeh

University of Ontario Institute of Technology, Oshawa, ON, Canada

Paper No. DETC2011-48043, pp. 755-760; 6 pages
doi:10.1115/DETC2011-48043
From:
  • ASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 1: 23rd Biennial Conference on Mechanical Vibration and Noise, Parts A and B
  • Washington, DC, USA, August 28–31, 2011
  • Conference Sponsors: Design Engineering Division and Computers and Information in Engineering Division
  • ISBN: 978-0-7918-5478-5
  • Copyright © 2011 by ASME

abstract

In this paper the closed form expressions for the dynamic response of an elastic plate rested on a nonlinear elastic foundation are obtained. The nonlinear governing equation is solved using both the Variational Iteration Method (VIM) and the Homotopy Analysis Method (HAM). The frequency responses are presented in the closed form and their sensitivity analyses with respect to their initial amplitudes are investigated. A number of numerical simulations are then carried out and the performance and validity of the solution procedure is evaluated in the time domain. It is proved that the both VIM and HAM are quite reliable and straightforward techniques to solve the corresponding set of nonlinear differential equations and also capable of obtaining the main harmonics of the system.

Copyright © 2011 by ASME

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