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Stochastic modeling of friction force and vibration analysis of a mechanical system using the model

Title
Stochastic modeling of friction force and vibration analysis of a mechanical system using the model
Author
유홍희
Keywords
Coulomb friction model; Friction-induced vibration; Friction oscillator; Stochastic friction model
Issue Date
2015-09
Publisher
KOREAN SOC MECHANICAL ENGINEERS
Citation
JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY, v. 29, NO 9, Page. 3645-3652
Abstract
The squeal noise generated from a disk brake or chatter occurred in a machine tool primarily results from friction-induced vibration. Since friction-induced vibration is usually accompanied by abrasion and lifespan reduction of mechanical parts, it is necessary to develop a reliable analysis model by which friction-induced vibration phenomena can be accurately analyzed. The original Coulomb's friction model or the modified Coulomb friction model employed in most commercial programs employs deterministic friction coefficients. However, observing friction phenomena between two contact surfaces, one may observe that friction coefficients keep changing due to the unevenness of contact surface, temperature, lubrication and humidity. Therefore, in this study, friction coefficients are modeled as random parameters that keep changing during the motion of a mechanical system undergoing friction force. The integrity of the proposed stochastic friction model was validated by comparing the analysis results obtained by the proposed model with experimental results.
URI
https://link.springer.com/article/10.1007/s12206-015-0808-4http://hdl.handle.net/20.500.11754/27642
ISSN
1738-494X; 1976-3824
DOI
10.1007/s12206-015-0808-4
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MECHANICAL ENGINEERING(기계공학부) > Articles
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