Analysis of characteristics of an ultrasonic motor in shock environment

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Journal of Vibration and Shock ›› 2019, Vol. 38 ›› Issue (20) : 44-50.

SUN Dong1,TANG Yu-juan2,WANF Jiong1,WANG Xin-jie1

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Abstract

The influence of shock environment on an ultrasonic motor was studied.The dynamic response of the ultrasonic motor under different impact load was analyzed based on the finite element method.The material model of key components was bilinear isotropic hardening model during the analysis process.The influence of shock environment on mechanical characteristic of the ultrasonic motor and vibration characteristic of stator was analyzed via experiment.The analysis results show that the deformation of the rotor can be divided into two states, the sinkage of rotor’s center and twisting of rotor.Bsides the amplitude, the impact duration also has influence on the deformation of the structure.The vibration characteristic of stator will have distortion besides the reduction of mechanical characteristic of the ultrasonic motor in shock environment.Rubber can protect the ultrasonic motor in shock environment effectively.

Key words

ultrasonic motor / shock environment / mechanical characteristic / vibration characteristic

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SUN Dong1,TANG Yu-juan2,WANF Jiong1,WANG Xin-jie1. Analysis of characteristics of an ultrasonic motor in shock environment[J]. Journal of Vibration and Shock, 2019, 38(20): 44-50

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