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工程力学  2013 

具有不确定参数车轨耦合系统随机振动灵敏度分析

DOI: 10.6052/j.issn.1000-4750.2011.11.0761, PP. 360-366

Keywords: 车轨耦合系统,虚拟激励法,辛方法,不确定,灵敏度

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Abstract:

对于轨道不平顺作用下具有不确定结构参数的车轨耦合系统随机振动灵敏度问题进行了研究。车辆采用多刚体动力学模型,弹性轨道采用无穷周期子结构进行模拟。在哈密顿对偶体系下建立了车轨耦合系统混合物理坐标及辛对偶坐标的动力学方程,应用解析手段推导出其相对系统不确定参数的灵敏度控制方程。进一步,基于虚拟激励法和辛方法建立了车轨耦合系统随机振动响应灵敏度分析方法。数值算例结果表明:所提出的灵敏度分析方法具有较高的计算精度,并保留了虚拟激励法高效的特性。该文所开展的工作对于车辆系统动力学参数设计与优化具有很好的参考价值。

References

[1]  吕清芳),(魏洋),(张齐生),等. 新型抗震竹质工程材料安居示范房及关键技术[J]. (特种结构), 2008,25(4):6―10. Lu Qingfang, Wei Yang, Zhang Qisheng, et al. Key technologies of the new bamboo anti-seismic model living room [J]. Special Structures,2008,25(4): 6―10. (in Chinese
[2]  Schu?ller G I, Pradlwarter H J. Uncertain linear systems in dynamics: Retrospective and recent developments by stochastic approaches [J]. Engineering Structures, 2009,31:2507―2517.
[3]  Journal of Sound and Vibration, 2004, 273: 805―836.
[4]  Jiang Shenxue, Zhang Qisheng, Jiang Shuhai. On Structure, production, and market of bamboo-based panels in China [J]. Journal of Forestry Research, 2002,13(2):151―156.
[5]  李文驹),(李佳). 竹建筑的再生之路[J]. (华中建筑), 2008(10):8―10. Li Wenju, Li Jia. The way of bamboo building redevelopment [J]. Huazhong Construction, 2008(10): 8―10. (in Chinese
[6]  Lu F, Kennedy D, Williams F W, Lin J H. Symplectic analysis of vertical random vibration for coupled vehicle-track systems [J]. Journal of Sound and Vibration, 2008,317:236―249.
[7]  陈果). 车辆轨道耦合系统随机振动分析[D]. 成都: 西南交通大学, 2000.
[8]  Chen Guo. Analysis of random vibration for vehicle and track Coupling System [D]. Chengdu: South West Jiaotong University, 2000.(in Chinese)
[9]  Paudel S K, Lobovikov M. Bamboo housing: Market potential for low-income groups [J]. Journal of Bamboo and Rattan, 2003,2(4):381―396.
[10]  Torstensson P T, Nielsen J, Baeza L. Dynamic train-track interaction at high vehicle speeds--Modelling of wheelset dynamics and wheel rotation [J]. Journal of Sound and Vibration. 2011, 330:5309―5321.

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