This paper proposes a method to evaluate vehicle rollover propensity based on a frequency-domain representation of the zero-moment point (ZMP). Unlike other rollover metrics such as the static stability factor, which is based on the steady-state behaviour, and the load transfer ratio, which requires the calculation of tyre forces, the ZMP is based on a simplified kinematic model of the vehicle and the analysis of the contact point of the vehicle relative to the edge of the support polygon. Previous work has validated the use of the ZMP experimentally in its ability to predict wheel lift in the time domain. This work explores the use of the ZMP in the frequency domain to allow a chassis designer to understand how operating conditions and vehicle parameters affect rollover propensity. The ZMP analysis is then extended to calculate worst-case sinusoidal manoeuvres that lead to untripped wheel lift, and the analysis is tested across several vehicle configurations and compared with that of the standard Toyota J manoeuvre.
Zero-moment point determination of worst-case manoeuvres leading to vehicle wheel lift
Vehicle System Dynamics ; 50 , sup1 ; 191-214
2012-01-01
Article (Journal)
Electronic Resource
English
Zero-moment point determination of worst-case manoeuvres leading to vehicle wheel lift
Online Contents | 2012
|Zero-moment point determination of worst-case manoeuvres leading to vehicle wheel lift
Automotive engineering | 2012
|WHEELIE DETERMINATION DEVICE, VEHICLE, WHEEL LIFT AMOUNT DETERMINATION METHOD
European Patent Office | 2017
|REAR WHEEL LIFT INCLINATION DETERMINATION DEVICE FOR VEHICLE
European Patent Office | 2015
|