采用牵引车和半挂车的不足转向梯度独立定义的方式对半挂汽车列车的操稳性进行了研究,分析了车辆的结构参数对不足转向梯度的影响.应用动态系统的稳定性理论,探讨了“折叠”和“横向摆振”失稳与其操纵特性间的关系.结果表明,与两轴单体汽车只会发生单调分歧失稳相比,半挂汽车列车还会发生“横向摆振”失稳,具体的失稳形式与牵引车和半挂车的不足转向梯度以及车辆结构参数密切相关.%The handling and stability of tractor-semitrailer combination are studied with the separate definition of understeer gradient for tractor and semitrailer, and the effects of structural parameters on the understeer gradients of the combination are analyzed. By applying the stability theory of dynamic system, the relationships between instabilities like "jackknife" and "lateral sway" and handling characteristics are investigated. The results indicate that different from two-axle single vehicle, in which only monotonous bifurcation instability may happen, beside that "lateral sway" may also take place in tractor-semitrailer combination, and its specific pattern of instability is closely related to the understeer gradient and structural parameters of tractor-semitrailer combination.
展开▼
