Research on Lateral Nonlinear Vibration Behavior of Composite Shaft-Disk Rotor System

Abstract:

The characteristics of the lateral nonlinear vibration in composite shaft-disk rotor system with nonlinear deformation are studied. Firstly, the equations of the kinetic energy of the composite shaft, the disk and the eccentric mass as well as the equations of the strain energy of the composite shaft are derived. Based on these equations, the nonlinear vibration equations are deduced by using the Lagrange equation. Then, the frequency response curves and time response curves of the system are obtained by using the IHB method and verified by the fourth order Runge-Kutta method. Experimental results show that the external damping coefficient, the size of eccentric mass only influences the nonlinear amplitude. Moreover, the ply-angle, thickness to diameter(T/D) ratio, length to diameter (L/D) ratio, and the position of disk in the shaft not only produce an effect on the nonlinear amplitude, but also influence the nonlinear vibration frequency.

• Periodical: Applied Mechanics and Materials (Volume 875)
• Pages: 149-161
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.875.149
• Online since: January 2018
• Authors: Chun Jin Zhang*, Yong Sheng Ren, Shu Juan Ji
• Keywords: Composite Shaft, Incremental Harmonic Balance (IHB) Method, Lateral Nonlinear Vibration, Rotor System

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