Exact solutions for forced vibration of completely free orthotropic rectangular nanoplates resting on viscoelastic foundation

Exact solutions for forced vibration of completely free orthotropic rectangular nanoplates resting on viscoelastic foundations are obtained by an analytical Hamiltonian-based method. Eringen's nonlocal theory is employed to take into account the small size effect. In the present method, a Hamiltonian system for the vibration of the orthotropic rectangular nanoplate is established by introducing a new total unknown vector. The vibration analysis is reduced to an eigenproblem in the symplectic space. Closed-form solutions of the completely free nanoplate are derived by using the solution of a guided supported nanoplate and a superposition of boundaries. Numerical examples including comparison studies are presented to illustrate the efficiency and accuracy of the proposed method. A detailed parametric study and some new results are provided also.