| Autor: |
REN Yong-sheng, ZHANG Yu-huan, SHI Yu-yan |
| Zdroj: |
Journal of Vibration Engineering; 2018, Vol. 31 Issue 3, p468-482, 15p |
| Abstrakt: |
An dynamical model of an inextensible rotating composite shaft with internal damping is presented and analyzed to investigate the effects of the internal damping on the nonlinear free vibration of the shaft. The rotating composite shaft is modeled as an Euler Bernoulli beam which includes the rotary inertia and gyroscopic effects while neglects the shear deformation. Nonlinearities are due to the inextensiblity in the shaft which lead to nonlinearities in curvature and inertia. The damping property is described by the dissipative behavior of viscoelastic composites. The extended Hamilton principle is employed to derive the nonlinear equations of bending-bending vibration of the rotating composite shaft. The partial differential equations of motion are discretized by Galerkin method. The solution of nonlinear free vibration is derived by using the method of multiple scales. The nonlinear natural frequencies are examined for different parameters such as ply angle, ratio of length over outer radius, stacking sequence and rotating speed, the effects of the internal damping of the composite are evaluated. The results of multiple scales for free vibration responses are compared with the numerical simulations. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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