We discuss the dynamic complex contact behavior between the stator and the liner that sticks to the rotor of an ultrasonic motor. An ultrasonic motor is powered by the vibration of the stator and operated by a frictional force between them. Therefore, it is important to examine the dynamic mechanism of the contact behavior to improve the energy efficiency and durability of the ultrasonic motor. We already proposed a numerical technique using the finite element method (FEM) on the basis of incremental theory to analyze the behavior of the complex contact zone which contains non-contact zone, slip contact zone and stick contact zone in a non-rotating rotor as a static contact problem. In this paper, we expand this numerical technique from a non-rotating rotor to a rotating rotor and propose a numerical technique to analyze the dynamic behavior of this complex contact zone. Moreover, we clear the dynamic contact mechanism and the driving characteristics of the ultrasonic motor such as the dependency of driving torque on the maximum frictional co-efficient.
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ASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
August 12–15, 2012
Chicago, Illinois, USA
Conference Sponsors:
- Design Engineering Division
- Computers and Information in Engineering Division
ISBN:
978-0-7918-4500-4
PROCEEDINGS PAPER
A Fundamental Study on Dynamic Contact Behavior of an Ultrasonic Motor (Coexistence of Stick and Slip Contact Zone)
Takafumi Ohnishi,
Takafumi Ohnishi
Fukui University of Technology, Fukui, Japan
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Tomoaki Nakayama,
Tomoaki Nakayama
Fukui University of Technology, Fukui, Japan
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Kiyotaka Yamashita,
Kiyotaka Yamashita
Fukui University of Technology, Fukui, Japan
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Kohro Takatsuka,
Kohro Takatsuka
Fukui University of Technology, Fukui, Japan
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Hiroshi Yabuno
Hiroshi Yabuno
Keio University, Yokohama, Japan
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Takafumi Ohnishi
Fukui University of Technology, Fukui, Japan
Tomoaki Nakayama
Fukui University of Technology, Fukui, Japan
Kiyotaka Yamashita
Fukui University of Technology, Fukui, Japan
Kohro Takatsuka
Fukui University of Technology, Fukui, Japan
Tsuneo Akuto
Mituba Co., Ltd., Kiryu, Japan
Hiroshi Yabuno
Keio University, Yokohama, Japan
Paper No:
DETC2012-70358, pp. 371-379; 9 pages
Published Online:
September 9, 2013
Citation
Ohnishi, T, Nakayama, T, Yamashita, K, Takatsuka, K, Akuto, T, & Yabuno, H. "A Fundamental Study on Dynamic Contact Behavior of an Ultrasonic Motor (Coexistence of Stick and Slip Contact Zone)." Proceedings of the ASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. Volume 1: 24th Conference on Mechanical Vibration and Noise, Parts A and B. Chicago, Illinois, USA. August 12–15, 2012. pp. 371-379. ASME. https://doi.org/10.1115/DETC2012-70358
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