Quasi-static shock absorber friction at low velocity reciprocating sliding conditions
Research output: Contribution to journal › Research article › Contributed › peer-review
Contributors
Abstract
The characteristics of vehicle shock absorbers have a major significance regarding vehicle dynamics, thus affecting vehicle ride comfort, handling and safety. Although much research focuses particularly on the hydraulic damping properties of this vital suspension component, friction properties are not considered in great detail. However, for driving scenarios of low excitation and velocity of the shock absorber due to moderate roughness of the road, the friction force generated by the shock absorbers and the remaining components is particularly important regarding the transfer of vibration from the road to the passenger. Hence, this study investigates the sensitivity of shock absorber friction to various parameters in the quasi-static domain. The effects of side force, temperature, excitation amplitude and waveform are determined for multiple shock absorbers. The results show no significant influence of the amplitude and waveform used in the conducted tests. Contrarily, the friction force strongly depends on the side force, which represents the variable load perpendicular to the shock absorber’s main axis arising during various driving events for MacPherson suspensions. An increased temperature reduces the side force effect.
Details
Original language | English |
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Journal | Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering |
Volume | 2023 |
Early online date | 5 Oct 2023 |
Publication status | E-pub ahead of print - 5 Oct 2023 |
Peer-reviewed | Yes |
External IDs
ORCID | /0000-0002-0679-0766/work/166764180 |
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ORCID | /0000-0003-3624-0228/work/166764745 |
Keywords
ASJC Scopus subject areas
Keywords
- Damper friction, friction, MacPherson, shock absorber friction, side force, side load