路面不平度是车辆行驶中振动的重要激励,因而路面模型的建立对车辆动态仿真有着非常重要的意义。本文提出了一种用蒙特卡罗法对路面不平度函数进行抽样的方法,只对相位随机抽样。并对结果进行了统计检验,得到的样本统计谱密度与理论谱密度进行对比分析,结果说明这是一种简单、可靠、行之有效的方法。 Pavement roughness is an important incentive for vehicle vibration, so the establishment of pavement model for vehicle dynamics simulation has a very important significance. This paper presents a Monte Carlo method for pavement roughness function sampling method, only the random sampling phase. And the results of a statistical test, the resulting sample statistical spectral density and theoretical spectral density comparative analysis, the results show that this is a simple, reliable and effective method.