履带对地面的包络特性研究
发布时间：2018-09-04 06:00
【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.
[Abstract]:With the help of finite element technology and MATLAB software, the sinusoidal pavement under different spatial frequencies is constructed by using the power spectral density function of pavement. The finite element models of crawler and load wheel are established. The deformation of crawler under gravity is studied. The envelope coefficients, envelope effect and power of crawler on undulating soil road, sand road, Gobi Road and pavement are obtained. By studying the relationship between the track curve and the sinusoidal ground, the filtering functions of the track on the ground under four typical roads are obtained. The filtering analysis of the four typical roads is realized, which can be directly applied to modify the road spectrum and provide the whole lane road simulation system with road excitation loading directly on the load-bearing wheels. Theoretical basis.
【作者单位】： 北京理工大学机械与车辆学院;中国航天标准化与产品保证研究院;
【基金】：国家部委基金资助项目(1030020220707)
【分类号】：U469.694
本文编号：2221222
[Abstract]:With the help of finite element technology and MATLAB software, the sinusoidal pavement under different spatial frequencies is constructed by using the power spectral density function of pavement. The finite element models of crawler and load wheel are established. The deformation of crawler under gravity is studied. The envelope coefficients, envelope effect and power of crawler on undulating soil road, sand road, Gobi Road and pavement are obtained. By studying the relationship between the track curve and the sinusoidal ground, the filtering functions of the track on the ground under four typical roads are obtained. The filtering analysis of the four typical roads is realized, which can be directly applied to modify the road spectrum and provide the whole lane road simulation system with road excitation loading directly on the load-bearing wheels. Theoretical basis.
【作者单位】： 北京理工大学机械与车辆学院;中国航天标准化与产品保证研究院;
【基金】：国家部委基金资助项目(1030020220707)
【分类号】：U469.694
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