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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  );
  • 초록

    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.


  • 주제어

    parametric dynamic instability .   viscoelastic core .   sandwich beam .   viscoelastic supports .   zone instability .   simple and combination resonances.  

  • 참고문헌 (16)

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