轨道过渡段沉降不平顺对车体振动影响研究

为研究过渡段不同弯折角对车体振动影响，以日常保养、舒适度、安全管理、限速管理等指标限制过渡段的沉降差。通过建立新型车辆单元模型，推导车辆系统振动有限元方程，采用Newmark数值积分方法并借助Matlab编程求解，得出三种速度工况下四大管理指标对应的过渡段弯折角限值。

Study on Influence of Irregular Settlement of Track in Transition Section on Vibration of Bodywork

To study influence of different bending angles in transition section on vibration of car body, the differential settlement of track in the transition section was limited by use of the following indices, routine maintenance, comfort degree, safety management, and speed limit management. With model of vehicle elements newly established, vibration finite element equation for vehicle system was deduced, which was solved by means of Newmark numerical integration with the aid of matlab programming, so as to get, in three speed cases, the thresholds of the bending angle in transition section corresponded to four control indices.