中文摘要：

为了给虚拟样机仿真分析提供复杂三维路面环境,基于单点FFT路面不平度时域模型,建立了三维FFT随机路面数学模型,并实现了其在Matlab中的仿真;依据三角网格法理论,建立了生成三维路面文件的通用模型,包括节点的生成和单元生成算法,并导入Adams形成所需的三维路面仿真环境。应用上述方法生成C级路面,对所选择的车辆样机进行了行驶平顺性仿真,与GB/T 13441—92标准对比分析得到了该车行驶平顺舒适性的合理时间。

英文摘要：

In order to provide the research of virtual prototype a complex 3-D virtual road environment,a 3-D FFT stochastic road model was established based on the single-point FFT model,and then the simulation result was gained by Matlab.What＇s more,based on the theory of triangle network,a general 3D virtual road model with the arithmetic of nodes and elements was created.Then a specified 3-D virtual road file was imported into Adams to form the 3-D virtual road.Finally,a C-level virtual road was generated for the riding performance simulation of virtual vehicle.By comparing the simulation result with the GB/T 13441—92,the virtual vehicle＇s reasonable time under the ride performance requirement was obtained.