摘要
通过试验获取了1T15M-2膜式空气弹簧在不同初始气压下的刚度特性曲线,以空气弹簧的刚度特性曲线为基础,在ADAMS环境下建立了1/4客车空气悬架的多体动力学仿真模型,仿真研究了激振频率与振幅、簧载质量对空气悬架振动特性的影响。仿真结果表明:在保持车身高度不变的前提下,簧载质量的变化对空气悬架固有频率影响不大;在低于共振区范围内,簧载质量的变化对车身加速度的影响不大,但当激振频率高于共振区后,车身加速度随簧载质量的增大而减小,激励振幅的增大对空气悬架位移传递率影响不大,车身加速度随激励振幅的增大而线性增大。
The stiffness characteristic curves of 1T15M-2 diaphragm air spring under different initial pressures were obtained by tests.Based on which the multi-body dynamic simulation model of 1 /4 bus air suspension was established in the ADAMS environment.The influence on the vibration characteristics of air suspension by the excitation frequency,amplitude and sprung mass was studied by simulation.The simulation results showed that,under the premise that the height of the bus body is not changed,the change of sprung mass has little effect on the natural frequency of the air suspension.When the excitation frequency is lower than natural frequency,change of sprung mass has little effect on the acceleration of bus body,however,when the excitation frequency is higher than resonance region,the acceleration of bus body will decrease with the increase of the sprung mass.The influence on the displacement transmissibility of air suspension by the changes of the increase of the excitation amplitude is little,and the acceleration of bus body will increase linearly with the increase of excitation amplitude.
出处
《机械设计》
CSCD
北大核心
2010年第10期35-38,共4页
Journal of Machine Design
基金
"十一五"国家科技攻关计划资助项目(2006BAD11A02)
关键词
空气悬架
振动特性
ADAMS
仿真
air suspension
vibration characteristics
ADAMS
simulation
