车辆单筒充气磁流变减振器的阻尼力影响因素及灵敏度分析

Influencing Factor and Sensitivity Analysis on the Damping Force of Vehicle Mono-tube and Air-charged MRF Damper

介绍了一种车辆单筒充气磁流变减振器的结构和工作原理。利用该减振器阻尼力数学模型仿真分析了剪切屈服应力、体积补偿压力、磁流变液零磁场粘度、活塞有效长度、阻尼通道间隙和活塞半径等参数对阻尼力的影响规律,利用相对灵敏度分析法比较了各参数对阻尼力的影响权重。结果表明,活塞半径灵敏度和权重最大,对阻尼力影响最大;而体积补偿压力灵敏度和权重最小,对阻尼力影响最小。

The structure and working principle of a vehicle mono-tube and air-charged magneto-rheological fluids （MRF） damper are introduced. The damping force mathematical model is used to analyze the influence rule of sheafing yield stress, volume compensating pressure, magneto-rheological fluid-zero magnetic field viscosity, piston effective length, damping channel gap and piston radius ere on damping force, and the relative sensitivity analysis method is used to compare influence weight of parameters on damping force. The results show that the piston radius sensitivity has the max. weight and the influence on damping force is the highest; the volume compensating pressure sensitivity has the rain. weight and the influence on damping force is the lowest.