履带对地面的包络特性研究  

Research on Envelope Characteristics of the Track on Ground

作　　者：朱兴高[1,2] 顾亮[1] 

机构地区：[1]北京理工大学机械与车辆学院,北京100081 [2]中国航天标准化与产品保证研究院,北京100071

出　　处：《北京理工大学学报》2016年第1期48-52,共5页Transactions of Beijing Institute of Technology

基　　金：国家部委基金资助项目(1030020220707)

摘　　要：借助于有限元技术和Matlab软件,利用路面功率谱密度函数构造不同空间频率下的正弦路面,建立了履带、负重轮的有限元模型,研究了履带在重力作用下的变形,得到履带对起伏土路、砂石路、戈壁路、铺面路的包络系数、包络效果及功率谱变化情况.通过研究履带曲线与正弦地面之间的对应关系,得到4种典型路面下履带对地面的滤波函数.实现了对4种典型路面的滤波分析,可以直接应用到对道路谱进行修改,为整车道路模拟系统直接对负重轮进行道路激励加载提供理论依据.Applying finite element technology and Matlab, a sine road was studied with different spatial frequencies by use of road power spectral density, and the finite element mode of track and road wheel were built. Investigating the deformation of track with the action of gravity, the state of changes of envelope coefficient, envelope effect and power spectrum in undulation road, gravel road, desert road and paved road was obtained. A filter function of four typical roads was derived according to the relation of track curves and sine road. The filter analysis of the four topical roads can be directly applied to revise the road spectrum and provide a theoretic fundament for the whole vehicle-road simulation system to power the load wheel.

关 键 词：功率谱密度 履带 包络特性 滤波函数 

分 类 号：U469.694[机械工程—车辆工程] TJ811.92[交通运输工程—载运工具运用工程]