【摘要】 基于虚拟激励法研究了含有非线性迟滞弹簧的ISD悬架系统的振动特性。首先以Bouc-Wen模型描述迟滞弹簧的非线性特性,建立了含迟滞弹簧的1/4车辆ISD悬架系统动力学模型;用虚拟激励法仿真了弹簧不同非线性迟滞特性的ISD悬架的车身加速度、悬架动扰度和轮胎动载荷的功率谱响应,分析了ISD悬架不同迟滞弹簧非线性程度和惯容器惯质系数对车辆行驶平顺性的影响。研究结果表明,相比于被动悬架,ISD悬架提升了车辆的行驶平顺性,且随着迟滞弹簧非线性程度的增加,平顺性改善效果更明显。本文研究结果可为ISD悬架参数的选择提供依据。更多还原

【Abstract】 The vibration characteristics of the ISD suspension system with nonlinear hysteresis spring were studied based on the pseudo-excitation method.Firstly,the Bouc-Wen model was used to describe the nonlinear characteristics of the hysteresis spring,and the dynamic model of a quarter vehicle ISD suspension system with hysteresis spring was established.The power spectral responses of the vehicle body acceleration,suspension dynamic disturbance and tyre dynamic load of the ISD suspension with different nonlinear hysteresis characteristics of the spring were simulated using the pseudo-excitation method.The influences of the nonlinear degree of ISD suspension hysteresis spring and the inertial mass coefficient of the inerter on the ride comfort of the vehicle were analyzed.The results indicate that compared with the passive suspension,the ISD suspension can improve the ride comfort of the vehicle,and the improvement effect becomes more obvious as the nonlinearity of the hysteresis spring increases.The results of this study can provide a basis for parameter selection of the ISD suspension.更多还原