The Effect of Electric Field on Nonlinear Vibration DWBNNT Conveying Viscous Fluid for Two Theories

چکیده مقاله

Electro-thermo nonlinear vibration of viscous-fluid-conveying double–walled boron nitride nanotubes (DWBNNTs) embedded in a Pasternak foundation is presented. The van der Waals forces between the inner and the outer DWBNNTs are taken into account. In This paper the electric potential along length of nanotube for various f u is discussed. To achieve this aim, “Euler–Bernoulli beam(EBT) and cylindrical shell” theories are used to obtain the nonlinear strain terms. Hamilton's principle is employed to obtain coupled differential equations, containing displacement and electric potential terms. considering nonlocal charge equation for coupling of electrical and mechanical fields, the nonlinear higher order governing equations are derived and discretized by DQ method.