Analysis on the non-Ackermann Steady Cornering Behaviors of Eight-Wheeled Vehicles
Date Issued
2015
Date
2015
Author(s)
Yang, Ming-Shien
Abstract
The purpose of this study is to understand the effect of different multi-axle steering configurations to the steady turning behaviors of eight-wheeled vehicle with multi-axle steering. First, an eight-wheeled independent steering vehicle model has been developed, and its motion equations based on the geometry and force equilibrium of the vehicle are derived for the steady state analysis. This model has included eight independent steering angles, slip angles, load transfer, and the Magic Formula tire model of heavy duty vehicles. Applying Newton-Raphson method on the model, numerical solutions can be found. The solutions can be used to establishing benchmarks for cornering characteristics of Ackermann steering, then the effects of non-Ackermann steering have been studied. By using this model, the slip angle, cornering force and load transfer of each tire can be thoroughly realized. Finally, according to the tire characteristic above, the steady cornering behaviors of eight wheel vehicle can be described.
Subjects
Steady cornering
slip angle
load transfer
eight-wheeled vehicles
numerical analysis
multi-axle steering
Magic Formula of heavy duty vehicle
Type
thesis
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ntu-104-R02522609-1.pdf
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