弹性轮对的有限元分析

弹性轮对在国外轻轨交通车辆上已使用较为广泛 ,实践表明其在减少轮轨噪声、降低轮轨间的动作用力和提高旅客的乘坐舒适度等方面取得了明显的效果 ,但在国内还处于起步时期。应用有限元分析软件 ANSYS对弹性轮对进行了应力、变形和模态计算分析 ,并与刚性轮对的结果相比较 ,同时 ,研究了橡胶的本构参数对弹性轮对静强度的影响。结果表明 :在静载作用下 ,弹性轮对与刚性轮对的最大等效应力均发生在辐板靠近车轴处 ,但前者的最大等效应力值大于后者 ;橡胶材料常数对弹性轮对的橡胶应力和应变有较大影响 ,应对其合理选取 ;弹性轮对的低阶固有频率低于刚性轮对 ,这会使弹性轮对具有较好的隔振能力

Finite element analysis for resilient wheelset

The resilient wheelset has been widely used in light rail transit abroad. The practices indicate that it is of advantage to reduce wheel/rail noise, dynamic wheel/rail force and improve passenger ride comfort. In this paper, stresses, deformations and modalities of the resilient wheelset are analyzed by using the finite element analysis program ANSYS. The calculative results are compared with the results of the rigid wheelset. The studies on the influence of constitutive parameters of rubber on static strength of the resilient wheelset are also presented. The results indicate that the maximum equivalent stresses of the resilient wheelset and the rigid wheelset appear at the wheel spoke attached to the axle, and the peak value of the resilient wheelset is larger than that of the rigid wheelset. The material parameters of the rubber have large effects on stresses and strains of the rubber. It is necessary to select the optimum parameters. It is also acquired that the low inherent frequencies of the resilient wheelset is less than those of the rigid wheelset, which determines that the resilient wheelset has high efficiency in reducing vibrations. 1 tab, 8 figs, 6 refs.