摘要
建立了高速车体与吊挂设备的动力学模型,分析了车体与设备的谐振特性,得到了二者之间的频率关系。根据整备模态测试结果,分析了车体与吊挂设备在垂弯、扭转、菱形三种工况下的幅频特性,并分析了不同的弹性悬挂刚度下车体及设备测点的位移响应,从而得到车体与设备的谐振频率点及弹性悬挂刚度取值范围,有效降低车体及设备的谐振水平,为高速车体及吊挂设备的设计及选择提供参考和依据。
The dynamical model between high-speed car body and hanging devices was established. Then,the frequency relation between car body and hanging devices was obtained based on analyzing characteristics of harmonic resonance.According to the test results of complete car＇s model,it discussed the amplitude frequency characteristics of car body and hanging devices under the condition of vertical bending,torsion and rhombus,and analyzed their displacement response in different elastic suspension stiffness. Consequently,the resonance frequency point and the value ranges of elastic suspension stiffness were determined. The research results provide references for the design of high-speed car body and hanging devices.
出处
《机械设计与制造》
北大核心
2016年第1期221-224,共4页
Machinery Design & Manufacture
关键词
高速车体
吊挂设备
幅频特性
悬挂刚度
谐振响应
High-Speed Car Body
Hanging Devices
Amplitude Frequency Characteristics
Suspension Stiffness
Harmonic Resonance
