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路面不平度的模拟与汽车非线性随机振动的研究
引用本文:金睿臣,宋健.路面不平度的模拟与汽车非线性随机振动的研究[J].清华大学学报(自然科学版),1999,39(8):2.
作者姓名:金睿臣  宋健
作者单位:清华大学,汽车工程系,汽车安全与节能国家重点实验室,北京,100084
摘    要:预测汽车的随机振动响应对汽车的开发设计是非常重要的。实际汽车存在许多非线性环节,需采用非线性振动模型进行研究,在这种情况下,通常采用的频域分析方法一般不再适用。应用机械系统分析软件ADAMS建立了11自由度汽车非线性振动模型,并用由伪白噪声法生成的符合实际路面统计特性的伪随机序列来模拟路面不平度。在此基础上,利用数值算法在时域中对汽车的非线性随机振动响应进行了计算机仿真计算研究。结果表明,这种方法对研究汽车的非线性随机振动是有效的。

关 键 词:汽车动力学  ADAMS软件  非线性随机振动  路面不平度
修稿时间:1998-11-25

Simulation of the road irregularity and study of nonlinear random vibration of the automobile
JIN Ruichen,SONG Jian.Simulation of the road irregularity and study of nonlinear random vibration of the automobile[J].Journal of Tsinghua University(Science and Technology),1999,39(8):2.
Authors:JIN Ruichen  SONG Jian
Abstract:To use the simulation technique is very important to predict the random vibration of the automobile. Because there are many nonlinear factors in a real automobile, a nonlinear vibration model should be necessarily used. In this case, the frequency domain methods can not be applicable. Under the help of the mechanical system simulation program ADAMS, an 11 DOF nonlinear vibration model of the automobile was built. By means of pseudo white noise, pseudo random sequences, which can simulate the random irregularities of a road, were generated. Based on these, using numerical method, the random vibration of the automobile was studied. The results of simulation have demonstrated the validity of the method.
Keywords:vehicle  dynamics  program ADAMS  nonlinear random vibration  road irregularities  
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