时空相关路面不平度时域模型仿真研究

王 亚;陈思忠;郑凯锋

振动与冲击 ›› 2013, Vol. 32 ›› Issue (5) : 70-74.

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PDF(1386 KB)
振动与冲击 ›› 2013, Vol. 32 ›› Issue (5) : 70-74.
论文

时空相关路面不平度时域模型仿真研究

  • 王 亚,陈思忠,郑凯锋
作者信息 +

Simulation research of time domain model of road roughness with time-space correlation

  • WANG Ya, CHEN Si-zhong,ZHENG Kai-feng
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摘要

路面不平度时域模型对现代汽车理论研究意义重要。应用谐波叠加法建立单轮路面不平度输入模型,提出两种不同轮辙路面空间相关模型,并结合同轮辙路面不平度输入时间延迟关系,将单轮模型拓展为四轮路面不平度时域模型。仿真分析显示,该两种方法建立的路面不平度模型,其功率谱与理论功率谱基本吻合,异轮辙输入相干函数符合理论规律。与其它方法相比,该模型建模效率高。

Abstract

It is of significance to establish the time domain model of road for the theoretical research of modern vehicle. Harmony superposition method is applied to establish the road roughness of a single wheel. Two kinds of method are proposed to calculate the coherence of bilateral tract excitation, combined with the correlation of front and rear wheel, road roughness model of 4-wheel vehicle is built. Simulation results show that the two modeling method is correct in theory of coherence and can be applied to simulate stochastic road with a specific spectrum. Compared with other methods, proposed methods improve the efficiency of modeling.

关键词

路面不平度 / 时域模型 / 谐波叠加法 / 时空相关

Key words

road roughness / time domain model / harmony superposition / time-space correlation

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导出引用
王 亚;陈思忠;郑凯锋. 时空相关路面不平度时域模型仿真研究[J]. 振动与冲击, 2013, 32(5): 70-74
WANG Ya;CHEN Si-zhong;ZHENG Kai-feng. Simulation research of time domain model of road roughness with time-space correlation[J]. Journal of Vibration and Shock, 2013, 32(5): 70-74

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