Abstract: In order to reduce the influence of suspension vibration on ride comfort during vehicle driving and improve the adaptability of automobile driving on potholed roads, a three-dimensional software is used to build the vehicle model, and the contact relationship between the automobile and the road surface is established by importing it into Simcenter 3D software, and the dynamic process of the vehicle passing through the speed bump is simulated. Through the design of experiments (DOE) programming optimization test scheme, the response surface methodology is used to make multi-objective analysis on three evaluation indexes of suspension ride comfort, such as vertical acceleration, roll and pitch angular accelerations, so as to optimize the main influencing factors of suspension, such as suspension stiffness and damping value. After optimization, the values of the three evaluation indexes are reduced, and the ride comfort of the whole vehicle is significantly improved, which shows that the structural matching of suspension can be analyzed and studied by this method, which provides a basis for further analysis of suspension.

Key words: suspension comfort; vertical acceleration; roll angular; pitch angular; response surface methodology

摘要： 为了减少车辆行驶过程悬架振动对行驶平顺性的影响，提升车辆坑洼路面行驶的适应 性，使用三维软件搭建整车模型，并导入至 Simcenter 3D 软件中建立整车与路面的接触关系， 对车辆经过减速带时的动力学过程进行仿真。通过试验设计（DOE）规划优化试验方案，使 用响应曲面法对垂向加速度、侧倾角加速度、俯仰角加速度等 3 个悬架平顺性评价指标进行 多目标分析，实现对悬架主要影响因子悬架刚度、阻尼值等的优化。优化后三个评价指标数 值均减小，整车平顺性显著提升，表明通过该方法可以对悬架的结构匹配性进行分析与研究， 为后续悬架的进一步分析提供依据。

关键词: 悬架平顺性；垂向加速度；侧倾角；俯仰角；响应曲面法