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Modeling nonlinear suspension system for improved braking distance estimation

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dc.contributor.author Yang, Jia Sheng
dc.contributor.author Fwa, Tien Fang
dc.contributor.author Ong, Ghim Ping
dc.date.accessioned 2018-09-13T19:55:20Z
dc.date.available 2018-09-13T19:55:20Z
dc.identifier.uri http://dl.lib.mrt.ac.lk/handle/123/13547
dc.description.abstract Braking distance of a vehicle is an important safety consideration in highway geometric design. Braking distances have been commonly estimated based on vehicle wheel loads and assumed tirepavement friction. The use of classic vehicle dynamics simulation model, which simplifies tire stiffness as linear elastic function, is a main approach to estimate tire-pavement friction and predict braking distances. The interaction of nonlinear vehicle dynamics with pavement surface roughness has not been considered in analyzing its impact on vehicle braking distance. The impact of pavement roughness induced vehicle vibration on braking distance is the topic of interest in this paper. A nonlinear vehicle dynamics simulation model is proposed where tire stiffness is considered as a nonlinear elastic function in the analysis of vehicle dynamics. The model is implemented in MATLAB 11.0. A hypothetical example is given to illustrate the possible difference between models with linear and nonlinear tire stiffness in calculating braking distance on a wet pavement. Although the model presented is rather simplified considering only nonlinear tire stiffness, and a more elaborate simulation model is required to examine in detail the actual impact of considering nonlinear vehicle dynamics, the example does show that further study is necessary to examine the need for vehicle dynamics simulation in order to reliably predict vehicle braking distances on highways, taking into account the effect of pavement roughness. en_US
dc.language.iso en en_US
dc.subject Braking distance en_US
dc.subject Pavement roughness en_US
dc.subject Suspension system en_US
dc.subject Nonlinear tire stiffness en_US
dc.title Modeling nonlinear suspension system for improved braking distance estimation en_US
dc.type Conference-Full-text en_US
dc.identifier.faculty Engineering en_US
dc.identifier.department Department of Civil Engineering en_US
dc.identifier.year 2014 en_US
dc.identifier.conference 9th Asia Pacific Conference on Transportation & the Environment en_US
dc.identifier.place Mount Lavinia en_US
dc.identifier.pgnos 244-252 en_US
dc.identifier.proceeding Proceedings of the Asia Pacific Conference on Transportation & the Environment en_US
dc.identifier.doi https://doi.org/10.31705/APTE.2014.22 en_US


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  • 2014-9th [41]
    Conference Proceedings 9th Asia Pacific Conference on Transportation and the Environment

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