Title
Behavior of Axially Moving Nanobeams With Transverse Oscillation: Role Of Lower And Higher Order Differential Equation With Boun,Used
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Transverse free vibrations of axially moving nanobeams subjected to axial tension are studied based on nonlocal stress elasticity theory. A lower and higherorder differential equation of motion is derived from the D'Alembert principle with corresponding lowerorder and higherorder, nonclassical boundary conditions. Effects of nonlocal nanoscale, dimensionless axial velocity, density and axial tension on natural frequencies are presented and discussed through numerical examples for both lower and higher order differential equation of transverse motion. It is found that these factors have great influence on the dynamic behaviour of an axially moving nanobeam. In particular, nonlocal effect softens the system, in lower order case and the nonlocal effect harden the system, in higher order case. And also found that higher order differential equation of transverse motion with higher nonclassical boundary conditions are more effective where increasing nonlocal stress effects increasing natural frequency in fact induce increased nanostructural stiffness,i.e.,decreasing deflection.
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