摘要
为研究油气悬架系统振动衰减规律,得出振动衰减特性,根据油气悬架系统结构特征,在考虑等温平衡过程和快速加载过程的基础上,建立油气悬架系统弹性力数学公式和阻尼力数学公式,利用能量守恒原理推导出油气悬架系统振动数学模型。通过数值计算仿真及试验研究,得出油气悬架系统自身振动衰减规律及有关结构参数对衰减规律的影响情况。结果表明:仿真结果与试验结果基本一致,油气悬架系统对振动的衰减幅度呈现出周期性递减趋势,大部分振动能量在激励后的前两个振动周期被消耗掉;悬架结构参数的改变不仅影响振幅衰减程度,而且影响振动衰减周期。
In order to study the vibration attenuation law of the hydro-pneumatic suspension system and obtain the vibration attenuation characteristics, the mathematical formula for damping force and the elastic force of the hydro-pneumatic suspension system were established considering the isothermal equilibrium process and the fast loading process, which was based on the structural characteristics of the hydro-pneumatic suspension system. The mathematical model of vibration of the hydro-pneumatic suspension system was derived based on the principle of conservation of energy. Through numerical simulation and experimental study, the vibration attenuation law of the oil and gas suspension system and the influence of relevant structural parameters on the attenuation law were obtained. The results show that the simulation results are basically consistent with the test results, and the attenuation amplitude of the vibration of the hydro-pneumatic suspension system shows a cyclical decreasing trend. Most of the vibration energy is consumed in the first two vibration cycles after excitation. Changes in the suspension structure parameters affect not only the amplitude attenuation but also the vibration attenuation period.
作者
刘杰
胡宏伟
陈向炜
LIU Jie;HU Hongwei;CHEN Xiangwei(School of Electronic&Electrical Engineering,Shangqiu Normal University,Shangqiu Henan 476000,China)
出处
《机床与液压》
北大核心
2020年第10期174-180,共7页
Machine Tool & Hydraulics
基金
国家自然科学基金资助项目(11372169)
河南省科技攻关资助项目(182102210115)。
关键词
油气悬架
数学模型
衰减振动
阻尼力
Hydro-pneumatic suspension
Mathematical model
Attenuated vibration
Damping force
