车下质量橡胶吊挂横向减振及其影响因素

Horizontal Vibration Reduction and Its Influencing Factors in Rubber Suspender within Mass Hanging under the Vehicle

对于高铁车辆来讲,车下质量橡胶吊挂具有横向减振作用,且有等效参振质量和车下质量横向谐振2个主要影响因素.根据高速转向架创新技术特点,如ICE3系列,抗蛇行高频阻抗作用已经成为车体对走行部接口的重要影响因素之一.结合整体式的车体轻量化设计形式,车体下部1阶横向弯曲模态振动难以避免,并对其30年技术服役寿命要求构成了负面影响.某高寒车首次施行夏季300 km/h运行期间,通过测试加速度的逆向推演,得到橡胶吊挂三向动态刚度.动挠度是由相对加速度的2次积分得到的,其存在积累误差,因而逆向推演结果丧失了恒定低频刚度特征.为了控制上述2个影响因素的负面影响,高速转向架必须实现优配,同时车下质量橡胶吊挂也要进行参数优化设计.

As for high-speed rail's vehicle,rubber suspender within mass hanging under the vehicle has the function of shock-absorbing,also contains two main factors,the mass of involving vibration and horizontal resonance oscillation. According to the characteristics of high-speed bogie innovative technology,such as ICE3 series,anti-snake high-frequency impedance has become one of the important factors affecting the body towards the interface. Combined with the overall type design of lightweight body,vibration of the horizontal bending mode on the 1 st step under part is difficult to avoid,and it will affect the requirement of its 30 years technical service. During the summer working of 300 km/h,firstly used by high-altitude car,through the test of the inverse accelerated speed deduction,the three-way dynamic stiffness of the rubber suspender has been proved.The dynamic deflection is obtained from the second integral of the relative acceleration,and there is an accumulation error,and the inverse deduction results lose the stiffness characteristic of the constant low frequency. In order to control the negative impact of the above two factors,high-speed bogies should be optimized achieved,while rubber suspender within mass hanging under the vehicle should also be optimized design.