车辆底架悬挂装置减振器弹簧设计方法研究

Study of Design Method of Shock Absorber Spring Device of Vehicle Chassis Suspension

为减小悬挂装置的振动,需要在车体和悬挂装置之间安装减震器.减震器的设置,对振动效应的影响较大.首先建立了车辆-悬挂装置的动力学模型,模型中特殊考虑了悬挂装置及减震器的动力学性质.并将减震器性能作为设计参数.运用矩阵摄动理论,推导出了减震器弹簧对频率的影响.采用该理论,可方便的对减震器的弹簧进行设计,使悬挂系统避开一些敏感频率,达到减震、预防共振发生的目的 .

In order to reduce the vibration of the suspension device, an absorber is arranged between the vehicle body and the suspension device. The setting of the shock absorber has great influence on the vibration effect. Firstly, the dynamic model of the vehicle suspension system is established. In the model, the dynamic characteristics of suspension and shock absorber are considered, and the performance of shock absorber is considored as the design parameter. Based on the matrix perturbation theory, the influence of the spring on the frequency of the shock absorber is derived. By adopting the theory, the elastic design of the shock absorber can be easily carried out, so that the suspension system can avoid some sensitive frequency and achieve the purpose of preventing resonance.