Analysis of heavy vehicle rollover and stability

Zhiguo Zhao^{1, 2}

COMPUTER MODELLING & NEW TECHNOLOGIES 2014 18(12D) 157-161

¹ School of Transportation Engineering, Huaiyin Institute of Technology, Huaian, 223003, China
² School of mechanical engineering, Southeast University, Nanjing, 211189, China

Features itself of heavy vehicle led to their poor roll stability and prone to rollover accidents. Vehicle rollover accidents are a significant traffic accidents resulting in loss of life and property, and have become an important issue affecting transport security. Exploration and research of heavy vehicle safety and stability control have become the important topic concerned all over the world. A 3DOF dynamics model is created with heavy truck for example to set the LTR (Lateralload Transfer Ratio) as the rollover evaluation index, study on the relationship between speed, the front corner and centroidal moment with rollover angle, lateral load transfer ratio, then analyse the influence of vehicle condition parameters on the roll stability with both cases of noload and loaded, and make a simulation in SIMULINK. The simulation results show that load mass and centroid position have the greatest impact on rollover stability, vehicle driving stability can be improved by reducing the height mass and increasing the track and wheelbase, the traditional warning method cannot completely reflect the state of rollover of heavy vehicles. All this work finally provides the basis for optimization of heavy vehicles bodies and improves of rollover stability of heavy vehicles.