Ultrasonic friction reduction in elastomer - Metal contacts and application to pneumatic actuators

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Pham, T.M.; Twiefel, J.: Ultrasonic friction reduction in elastomer - Metal contacts and application to pneumatic actuators. In: Physics Procedia 70 (2015), S. 55-58. DOI: https://doi.org/10.1016/j.phpro.2015.08.040

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Sum total of downloads: 227

Ultrasonic friction reduction is well known in metal-metal contacts. Due to the vibration, the stick phase in the contact phase vanishes and only sliding occurs. As long as the macroscopic relative velocity of the contact partners is much lower than vibration velocity, the necessary force to move the parts tends to (nearly) zero. If the effect also exists in material combinations with a significant difference in stiffness and damping characteristic has not been investigated in the past. This contribution shows the effect for various material combinations, which are typical for sealings in pneumatic actuators. Further, a novel integrated transducer design for a pneumatic actuator is presented. In this design the transducer also acts as moving part within the pneumatic actuator. The design challenges are the two contact areas on the moving part, where the friction reduction and consequently high vibration amplitudes are needed. The first area is fixed on the transducer geometry, the other is moving along the piston. This novel design has been implemented in the laboratory; detailed experimental results are presented in this contribution.
License of this version: CC BY-NC-ND 4.0
Document Type: article
Publishing status: publishedVersion
Issue Date: 2015
Appears in Collections:Fakultät für Maschinenbau

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pos. country downloads
total perc.
1 image of flag of Germany Germany 169 74.45%
2 image of flag of United States United States 17 7.49%
3 image of flag of Vietnam Vietnam 6 2.64%
4 image of flag of China China 6 2.64%
5 image of flag of Egypt Egypt 4 1.76%
6 image of flag of Taiwan Taiwan 3 1.32%
7 image of flag of Korea, Republic of Korea, Republic of 3 1.32%
8 image of flag of France France 3 1.32%
9 image of flag of Portugal Portugal 2 0.88%
10 image of flag of Hong Kong Hong Kong 2 0.88%
    other countries 12 5.29%

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