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以我国现行的主型客车为研究对象,考虑了轨道横向不平顺和水平不平顺两种激扰,建立了17个自由度的整车横向振动模型,给出了系统在两种激扰同时作用下,同实矩阵运算求解随机响应的具体计算方法,并导出了构件在质心外任意一点处的功率谱密度计算公式,分别用3种不同的轨道谱对装有206转向架的硬卧车进行了响应计算,并将计算结果与线路试验结果进行了对比分析.
Taking the current main passenger car in our country as the research object, two kinds of disturbances of horizontal and vertical irregularity of the track are considered, and a horizontal vibration model of vehicle with 17 degrees of freedom is established. The calculation formulas of the power spectral density at any point outside the centroid of the component are deduced by using the same real matrix operation and the calculation formula of the power spectral density at random point outside the centroid is derived. Response calculation, and the calculation results and line test results were compared.