Modeling and performance evaluation of traveling-wave piezoelectric ultrasonic motors with analytical method

2002 ◽  
Vol 100 (1) ◽  
pp. 84-93 ◽  
Author(s):  
Dong Sun ◽  
Jinbo Liu ◽  
Xing Ai
Keyword(s):  
Performance Evaluation ◽  
Analytical Method ◽  
Traveling Wave ◽  
Ultrasonic Motors ◽  
And Performance

Investigation on the traveling wave and three-dimensional trajectory of motion on the stator of rotational ultrasonic motors

2020 ◽  
Vol 64 (1-4) ◽  
pp. 631-638
Author(s):  
Hucheng Chen ◽  
Wei Han ◽  
Jinhao Qiu
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Traveling Wave ◽  
Dimensional Space ◽  
Computational Cost ◽  
Three Dimensional ◽  
Element Model ◽  
Input Voltage ◽  
Ultrasonic Motors ◽  
And Performance

Better understanding of the characteristics of the traveling wave and three-dimensional trajectory related to motion on the surface of the stator is very important for the design and performance improvement of the ultrasonic motors. In this paper, an accurate finite element model of a single stator with a fully coupled piezoelectric layer was established at a moderate computational cost. The finite element model was verified by experimental test at the inverse resonance point. Based on this model, the traveling wave and three-dimensional trajectory of stator surface, including the influence of the input voltage on the phase and amplitude of the displacements in three directions, are investigated. The results show that the trajectory of particles on the stator surface is an ellipse in three-dimensional space due to the phase differences between the three components of displacement in the radial, circumferential and axial directions. The amplitude of radial displacement is about 39.5% of that in the circumferential displacement, which should not be neglected.

Analysis of Transverse Vibration Modes of a Gun Barrel Subjected to Recoil

2014 ◽  
Vol 592-594 ◽  
pp. 2011-2015 ◽  
Author(s):  
Pravin Kumar ◽  
S.K. Nayak ◽  
Anil M. Datar ◽  
Gian Bhushan
Keyword(s):  
Performance Evaluation ◽  
Finite Elements ◽  
Cantilever Beam ◽  
Analytical Method ◽  
Transverse Vibration ◽  
Mode Shapes ◽  
Vibration Modes ◽  
Gun Barrel ◽  
And Performance ◽  
Selection Of

This paper focuses on the calculation of modal frequencies and corresponding mode shapes of Gun Barrel by analytical method and the Finite Elements Method. Modal analysis is used to find out natural and succeeding two modes frequencies for transverse vibration. Barrel is considered as a cantilever beam. Recoil of Gun Barrel is incorporated as variation in the length cantilever beam. Increase in modal frequencies due to gun barrel recoil is observed. It is concluded that the transverse vibration of gun barrel coupled with the recoil produces a band of frequencies in each modes. The analysis and results discussed can be used for design and performance evaluation, selection of accessories and attachments of gun systems.

Sign in / Sign up

Export Citation Format

Share Document