Dynamic load-sharing of longitudinal-connected air suspensions of a tri-axle semi-trailer

Chen, Yikai, He, Jie, King, Mark, Liu, Hongchao, & Zhang, Weihua (2013) Dynamic load-sharing of longitudinal-connected air suspensions of a tri-axle semi-trailer. In Transportation Research Board 92nd Annual Meeting, 13-17 January 2013, Washington, D.C.

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Abstract

The effects of suspension parameters and driving conditions on dynamic load-sharing of longitudinal-connected air suspensions of a tri-axle semi-trailer are investigated in this study. A novel nonlinear model of a multi-axle semi-trailer with longitudinal-connected air suspensions is formulated based on fluid mechanics and thermodynamics and validated through test results. The effects of road surface conditions, driving speeds, air line inside diameter and connector inside diameter on dynamic load-sharing capability of the semi-trailer were analyzed in terms of load-sharing criteria. Simulation results indicate that, when larger air lines and connectors are employed, the DLSC (Dynamic Load-Sharing Coefficient) optimization ratio reaches its peak value when the road roughness is medium. The optimization ratio fluctuates in a complex manner as driving speed increases. The results also indicate that if the air line inside diameter is always assumed to be larger than the connector inside diameter, the influence of air line inside diameter on load-sharing is more significant than that of the connector inside diameter. The proposed approach can be used for further study of the influence of additional factors (such as vehicle load, static absolute air pressure and static height of air spring) on load-sharing and the control methods for multi-axle air suspensions with longitudinal air line.

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ID Code: 65151
Item Type: Conference Paper
Refereed: Yes
Additional URLs:
Keywords: dynamic load-sharing, air suspension modelling, multi-axle, semi-trailer
Divisions: Current > Research Centres > Centre for Accident Research & Road Safety - Qld (CARRS-Q)
Current > QUT Faculties and Divisions > Faculty of Health
Current > Institutes > Institute of Health and Biomedical Innovation
Current > Schools > School of Psychology & Counselling
Copyright Owner: Copyright 2013 Please consult the authors
Deposited On: 14 Jan 2014 05:46
Last Modified: 19 Jan 2014 04:47

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