Analysis of nonlinear vibration of a motor–linkage mechanism system with composite links

This paper studies the nonlinear vibration of a three-phase AC motor–linkage mechanism system with links fabricated from three-dimensional braided composite materials. Taking the drive motor and the linkage mechanism as an integrated system, the dynamic equations of the system are established by the finite element method. The relation between the nonlinear vibration of the system and the parameters of the system is obtained by the method of multiple scales. Results show that not only the structural parameters, but also the electromagnetic parameters and the material parameters have significant effects on the nonlinear vibration of the system. Finally, a numerical example is presented.