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  Volume 1, Number 4, October 2016 , pages 357-370

Shock analysis of a new ultrasonic motor subjected to half-sine acceleration pulses
Xiaoyan Hou, Heow Pueh Lee, Chong Jin Ong and Siak Piang Lim

    This paper aims to examine the dynamic response of a newly designed ultrasonic motor under half-sine shock impulses. Impact shock was applied to the motor along x, y or z axis respectively with different pulse widths to check the sensitivity of the motor to the shocks in different directions. Finite Element Analysis (FEA) with the ANSYS software was conducted to obtain the relative displacement of a key point of the motor. Numerical results show that the maximum relative displacement is of micro meter level and the maximum stress is five orders smaller than the Young´s modulus of the piezo material, which proves the robustness of the motor.
Key Words
    standing wave ultrasonic motor; shock analysis; finite element method; piezoelectric stack
Xiaoyan Hou, Heow Pueh Lee, Chong Jin Ong and Siak Piang Lim: Department of Mechanical Engineering, National University of Singapore, 21 Lower Kent Ridge Road, Singapore

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