吉林大学学报(工学版) ›› 2017, Vol. 47 ›› Issue (1): 71-75.doi: 10.13229/j.cnki.jdxbgxb201701011

• Orginal Article • Previous Articles     Next Articles

Energy analysis of lateral instability in vehicle combinations at high-speed step response

ZHANG Yi-hua, XU Hong-guo, LIU Hong-fei, WANG Fa-ji   

  1. College of Transportation, Jilin University, Changchun 130022, China
  • Received:2015-12-03 Online:2017-01-20 Published:2017-01-20

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Abstract: Three possible instability sequences in vehicle combinations were obtained by using graph theory and the link relationship of each unit of the vehicle. A multi-body dynamic model, including nonlinear tire model of the vehicle combination was established by TruckSim. By simulation of the change of the state variables of each vehicle unit under high-speed step response, it was obtained that the main factor to influence the instability of the vehicle is the roll rate. Combining with the energy equation, the maximum energy of each vehicle unit under different vehicle speed was calculated, and the instability sequence of the vehicle units was obtained. Meanwhile, verification and energy analysis were carried out for the sequence of possible instability obtained by graph theory.

Key words: vehicle engineering, vehicle dynamics, vehicle combinations, graph theory, lateral instability, energy analysis

CLC Number: 

  • U469.5
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