A study on vehicle rollover-stability dynamics based on the energy approach
- Publication Type:
- Journal Article
- Zhendong yu Chongji/Journal of Vibration and Shock, 2016, 35 (24), pp. 164 - 174
- Issue Date:
© 2016, Editorial Office of Journal of Vibration and Shock. All right reserved. The energy approach was applied to study the vehicle rollover-stability. A new comprehensive evaluation method for vehicle rollover-stability was proposed. In order to study the methodology, a 10-DOF vehicle model with nonlinear characteristics was presented. The comparison of vehicle road test and simulations with vehicle model verifies that the model is correct. The rollover-stability index was provided: By calculating the ratio of real-time energy reserve and rollover energy threshold, the rollover energy reserve coefficient (RERC) could be deduced. And the velocity-steering interference coefficient (VSIC) was defined by integrating the vehicle velocity and the steering angle. After then, the comprehensive evaluation index of vehicle rollover stability, which contains the vehicle velocity, roll angle velocity, roll angle, and tire steering angle was established. Furthermore, the presented method was compared with the other vehicle rollover-stability evaluation methods by different situation simulation experiments. The result shows that the presented method is correct and applicable.
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