Modelling of friction phenomena in sliding conditions in suspension shock absorbers

Autor:	Javier Lizarraga, Jorge Biera, José A. Sala
Rok vydání:	2008
Předmět:	Engineering business.industry Mechanical Engineering Hydraulic shock Stick-slip phenomenon Structural engineering Mechanics Dissipation Mechanism (engineering) Shock absorber Automotive Engineering Safety Risk Reliability and Quality business Suspension (vehicle) Viscous friction
Zdroj:	Vehicle System Dynamics. 46:751-764
ISSN:	1744-5159 0042-3114
DOI:	10.1080/00423110802037024
Popis:	Friction phenomena are extremely important in the suspension mechanisms used in automotive vehicles. Currently, there is no theory capable of explaining all the friction phenomena from a global perspective. In the case of telescopic hydraulic shock absorbers, the additional contribution of force given by the friction in the range of low damping velocities increases the capability of energy dissipation. In contrast, the continuous transitions between adherence and sliding of the telescopic mechanism diminishes the capability of generating comfort. Moreover, the fluctuations of inner pressures and external side loads have to be added as purely dynamic factors affecting the friction variations. This paper explains the improvements obtained in the modelling of friction phenomena in sliding conditions, by proposing a new formulation of the Stribeck effect and the viscous friction, considering these two effects as associated concepts in the case of the suspension shock absorbers.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::543eac561daed2b7b07fd4b796852b03 https://doi.org/10.1080/00423110802037024 Zobrazit plný text záznamu