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

Autor:	Chan Kyu Choi, Won Seok Kang, Hong Hee Yoo
Rok vydání:	2015
Předmět:	Materials science business.product_category business.industry Mechanical Engineering Stick-slip phenomenon Structural engineering law.invention Machine tool Vibration Mechanical system Mechanics of Materials law Collision response Lubrication Disc brake business Friction torque
Zdroj:	Journal of Mechanical Science and Technology. 29:3645-3652
ISSN:	1976-3824 1738-494X
DOI:	10.1007/s12206-015-0808-4
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7e9aeed57a05ecf239609ef315bb44f1 https://doi.org/10.1007/s12206-015-0808-4 Zobrazit plný text záznamu Full text from SpringerLink