On the use of Active Fiber Composites for Smart Control of Nonlinear Vibrationsof Sandwich Shells

摘要

This paper deals with the control of nonlinear vibrations of smart sandwich shallow shells using active fiber composites. For this purpose, a finite element model is developed for the sandwich shells integrated with the patches of active constrained layer damping treatment. The constraining layer of the patch is considered to be ofactive fiber compositematerial.Five sets of displacement fields describing the kinematics of deformation and satisfying the boundary conditions are used along with the Von Karman nonlinear strain-displacement relations.To model the constrained viscoelastic layer of the patch,Golla-Hughes- McTavish method is used. Sandwich shallow shells with symmetric laminated faces are considered for presenting the numerical results.