分层(地质)
材料科学
有限元法
转子(电动)
超声波电动机
变形(气象学)
接触分析
结构工程
机械
复合材料
工程类
机械工程
物理
压电
地质学
构造学
古生物学
俯冲
作者
Shengnan Shen,Heow P Lee,Siak Piang Lim,Chong J Ong
标识
DOI:10.1177/1056789514520798
摘要
Ultrasonic motors (USMs) are novel electric motors used for positioning controls. Due to the drive characteristic of USMs, wear and fatigue of friction material at the contact friction interface are inevitable. Contact deformation can cause local damage of USMs. Therefore, obtaining the details of the stress distribution due to the inelastic deformation is important. In this paper, a contact model of traveling wave ultrasonic motor (TWUSM) is proposed. A three-dimensional finite element model with cohesive zone elements embedded between friction layer and rotor is then developed. Infinite finite elements are included in this modeling as the boundary condition. The evolution of deformation in friction layer and rotor due to the mechanical surface loading is presented. The possible interfacial delamination process between friction material and rotor is also numerically investigated.
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