Structural Engineering and Mechanics

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Dynamic stability of a viscoelastically supported sandwich beam

  • Ghosh, Ranajay (Theoretical and Applied Mechanics, Cornell University) ;
  • Dharmavaram, Sanjay (Department of Mechanical Engineering, Indian Institute of Technology) ;
  • Ray, Kumar (Department of Mechanical Engineering, Indian Institute of Technology) ;
  • Dash, P. (A.T. - Bidyadharpur Sasam)
  • Received : 2003.11.13
  • Accepted : 2004.11.19
  • Published : 2005.03.30
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Abstract

The parametric dynamic stability of an asymmetric sandwich beam with viscoelastic core on viscoelastic supports at the ends and subjected to an axial pulsating load is investigated. A set of Hill's equations are obtained from the non-dimensional equations of motion by the application of the general Galerkin method. The zones of parametric instability are obtained using Saito-Otomi conditions. The effects of shear parameter, support characteristics, various geometric parameters and excitation force on the zones of instability are investigated.

Keywords

References

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