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Modal Interactions in a Thermally Loaded Annular Plate

[+] Author Affiliations
Haider N. Arafat, Ali H. Nayfeh

Virginia Polytechnic Institute and State University, Blacksburg, VA

Paper No. DETC2003/VIB-48603, pp. 2501-2510; 10 pages
  • ASME 2003 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 5: 19th Biennial Conference on Mechanical Vibration and Noise, Parts A, B, and C
  • Chicago, Illinois, USA, September 2–6, 2003
  • Conference Sponsors: Design Engineering Division and Computers and Information in Engineering Division
  • ISBN: 0-7918-3703-3 | eISBN: 0-7918-3698-3
  • Copyright © 2003 by ASME


We investigate the nonlinear forced vibrations of a thermally loaded annular plate with clamped-clamped immovable boundary conditions in the presence of a three-to-one internal resonance between the first and second axisymmetric modes. We consider the in-plane thermal load to be axisymmetric and excite the plate externally by a harmonic force near primary resonance of the second mode. We then use the nonlinear von Kármán plate equations to model the behavior of the system and apply the method of multiple scales to investigate its responses. We found that the response can be periodic oscillations consisting of both modes, with a large component from the first mode. Moreover, the periodic solutions may undergo Hopf bifurcations which lead to aperiodic oscillations of the plate.

Copyright © 2003 by ASME



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