摘要
在分析白噪声法、谐波叠加法、FFT法和离散时序法4种常用路面不平度随机激励单点时域模型构建的基础上,对指定环境下4种模型的速度以及结果的波动性、统计学特性和合理性进行了仿真,比较和剖析了产生不同仿真效率和结果的本质所在.并对单点时域模型进行了拓展,分别构建了车辆的单轮辙多点、双轮辙多点时域模型.
Based on the analysis of four types of single-point time domain models of road irregularity excitation, namely white noise filtering, harmony superposition, FFT and discrete time sequence method, the efficiency and simulation results of these four methods in MATLAB environment were analyzed and compared. All these models were developed to multi-point unilateral-track time domain model and multi-point bilateral -track time domain model. It is of significance to establish these time domain models of road irregularity as the excitation to vehicles in order to perform vibration analysis, platform experiment, road damage prediction and interactive vehicle-road dynamics.
出处
《武汉理工大学学报（交通科学与工程版）》
2009年第5期919-922,共4页
Journal of Wuhan University of Technology（Transportation Science & Engineering）
基金
国家自然科学基金项目(批准号:50708020)
江苏省自然科学基金项目(批准号:BK2007566)
东南大学优秀青年教师计划项目(2008)资助
关键词
路面不平度
随机过程
单点时域模型
多点多轮辙激励
数值仿真
road irregularities
stochastic process
single point time domain model
bilateral track excitation
numerical simulation
