摘要
分析了所开发的可变阻尼减振器的工作原理和阀系特性。根据流体力学缝隙流动、管嘴流动及并联管路流量计算理论,推导出阻尼力计算公式,用MATLAB建立了可变阻尼减振器的数学模型,通过仿真得到了示功图和速度特性,并按照减振器台架试验标准QC/T545进行了试验,得到了外特性试验数据。将仿真结果和试验数据进行比较,证明应用并联管路流量计算理论建立的数学模型正确可靠,符合实际要求,准确地描述了阻尼力随行程变化的特性,可用于可变阻尼减振器的设计和性能预测。
The working principle and the valve train characteristics of the developed variable damping shock absorber are analyzed.According to the hydromechanics theory,a mathematical model of the variable-damping shock absorber is established through MATLAB and the calculation formula is deduced.The F-S curve and F-V curve are obtained through computer simulation.According to QC/T545 national standard,external characteristic curve is obtained by bench test.The simulation result is compared with the experimental data and the correctness of the mathematical model is proved.The model accurately describes the variation of damping force with the displacement and can be used for shock absorber design and performance prediction.
出处
《重庆大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2010年第9期29-34,共6页
Journal of Chongqing University
基金
重庆市科委重点攻关项目(CSTC
2009AB6018)
关键词
可变阻尼
减振器
流体力学
物理特性
仿真
variable-damping
shock absorber
fluid dynamics
physical characteristics
simulation
