摘要
为了解径向机构对径向转向架临界速度的影响,在分析径向转向架结构的基础上,建立轮对的运动微分方程。通过动力学仿真的方法,在频域和时域里分析径向导向机构对轮对振动的影响。研究结果表明,径向机构通过耦合同一转向架端轴轮对的摇头运动,可实现轮对摇头刚度的非对称,增大轮对的同相摇头刚度;径向机构激发转向架的反相蛇行振动模态,并且使轮对的振动模态向增大阻尼的方向移动,在一定程度上提高了转向架的稳定性;在悬挂参数相同的情况下,径向机构提高了60%的非线性临界速度。
In order to understand the relationship between radial mechanisms with critical velocity,radial bogie structure was analyzed and differential equations of wheelset motion were set up.The effect of guide mechanism on wheelset vibration was analyzed in time domain and frequency domain by the dynamic simulation.The results showed that：with radial mechanism coupling the yaw movement of the same bogie end axle wheelsets,asymmetric yaw stiffness could be realized,and in-phase yaw stiffness of wheelset was increased; radial mechanism excited inverting yaw vibration mode of the bogie and promoted the vibration mode moving to increase damping direction,which could improve the stability of the bogie to a certain extent; for the locomotive under the same suspension parameters,the radial mechanism improved the nonlinear critical speed by 60％.
出处
《机车电传动》
北大核心
2013年第5期1-4,共4页
Electric Drive for Locomotives
基金
国家自然科学基金项目(51005190)
教育部新世纪人才支持计划资助项目(NCET-11-0712)
