扣件胶垫刚度频变的车-线-隧垂向耦合随机振动虚拟辛分析

王平; 杨帆; 韦凯

doi:10.3969/j.issn.0258-2724.2017.02.001

扣件胶垫刚度频变的车-线-隧垂向耦合随机振动虚拟辛分析

doi: 10.3969/j.issn.0258-2724.2017.02.001

王平^1,2,
杨帆^1,2,
韦凯^1,2, ,

基金项目:

国家自然科学基金高铁联合基金资助项目(U1434201，U1234201)

国家杰出青年科学基金资助项目(51425804)

国家青年科学基金资助项目(51008257，51008158)

详细信息

作者简介:
王平(1969-),男,教授,博士,研究方向为铁路轨道安全理论,电话:13608007071,E-mail:wping@home.swjtu.edu.cn

通讯作者:
韦凯(1980-),副研究员,博士,研究方向为轨道交通系统动力学及环境振动噪声,电话:13551098099,E-mail:wei_mike@163.com

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出版历程
- 收稿日期: 2015-10-27
- 刊出日期: 2017-04-25

Symplectic Random Vibration Analysis of Vertically Coupled Vehicle-Track-Tunnel System Considering Frequency-dependent Stiffness of Rail Pads

WANG Ping^1,2,
YANG Fan^1,2,
WEI Kai^{1,2
, ,}

摘要

摘要: 为了精确预测车辆转向架、车轮及轮下系统的随机振动频域响应，综合考虑扣件胶垫的低频初始刚度及其刚度频变幅度，运用无穷周期子结构的辛数学方法与虚拟激励法，建立了车-线-隧垂向耦合随机振动虚拟辛分析模型，分析了扣件胶垫频变刚度对耦合系统随机振动的影响。结果表明：扣件胶垫刚度频变对车体垂向随机振动的影响可以忽略，但会提高转向架频率57 Hz以上的随机振动，并显著提高轮对与钢轨随机振动加速度功率谱最大峰值与其对应的第1主频；扣件频变刚度使轨道结构的自振频率及向高频发生偏移，轮轨共振频带的能量也向高频区域转移，轮对加速度功率谱在频域内的分布向高频部分偏移约8.6 Hz。
- 扣件胶垫 /
- 刚度频变 /
- 车-线-隧垂向耦合 /
- 随机振动 /
- 虚拟激励 /
- 辛数学
Abstract: In order to accurately predict the frequency-domain characteristics of random vibration of vehicle bogies, wheels, and the fundamental structure under wheels, a symplectic mathematics model of random vibration of a coupled vehicle-track-tunnel system is established using the pseudo excitation method (PEM) and the symplectic mathematics of infinite periodic substructures, with consideration of the low-frequency initial stiffness of rail pads and the frequency-dependent extent of stiffness. The model is used to analyze the influence of the frequency-dependent stiffness of rail pads on the random vibration of the coupled vehicle-track-tunnel system. Results show that the frequency-dependent stiffness of rail pads affects little the vertical random vibration of vehicle body, but it will increase vertical random vibration amplitudes of vehicle bogie at frequencies above 57 Hz and meanwhile significantly increase the peak power spectrum density (PSD) of the vertical random vibration of both wheelset and steel rail, as well as their 1st dominant frequencies. As the stiffness of rail pads increases with frequency, the natural frequency of the track structure shifts to a higher frequency range, and the energy of the wheel-rail resonance frequency band also transfers to a higher frequency region. As a result, the frequency domain of the wheel acceleration PSD distribution shifts upward by 8.6 Hz.
- rail pad /
- frequency-dependent stiffness /
- vertically coupled vehicle-track-tunnel system /
- random vibration /
- pseudo excitation /
- symplectic mathematics

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参考文献(16)

翟婉明. 车辆-轨道耦合动力学[M]. 3版. 北京:科学出版社,2007: 41-51.

夏禾,陈英俊. 车-梁-墩体系动力相互作用分析[J]. 土木工程学报,1992,25(2): 3-12. XIA He, CHEN Yingjun. Analysis of the lateral dynamic interaction in vehicle-bridge-pier system[J]. Chinese Journal of Civil Engineering, 1992, 25(2): 3-12.

蔡成标. 高速铁路列车-线路-桥梁耦合振动理论及应用研究[D]. 成都:西南交通大学,2004.

LIANG Bo, ZHU Y, CAI Y. Dynamic analysis of the vehicle-sub-grade model of vertical coupled system[J]. Journal of Sound and Vibration, 2001, 245(1): 79-92.

刘学毅,王平. 车辆-轨道-路基系统动力学[M]. 成都: 西南交通大学出版社,2010: 266-273.

王建炜. 列车-隧道动力耦合系统数值模拟方法及应用[D]. 上海:上海交通大学,2012.

田薇. 车辆动载作用下轨道结构和隧道结构的动力分析[D]. 上海:同济大学,2007.

L F, KENNEDY D, WILLIAM F W, et al. Symplectic analysis of vertical random vibration for coupled vehicle-track systems[J]. Journal of Sound and Vibration, 2008, 317: 236-249.

韦凯,杨帆,王平,等. 扣件胶垫刚度频变的车/轨耦合系统随机振动虚拟辛分析[J]. 工程力学,2016,33(9): 123-130. WEI Kai, YANG Fan, WANG Ping, et al. The general symplectic analysis of time-variant random vibration of vehicle-track coupled system withfrequency-dependent stiffness of rail pads[J]. Engineering Mechanics, 2016, 33(9): 123-130.

林家浩,张亚辉. 随机振动的虚拟激励法[M]. 北京:科学出版社,2004: 60-76.

钟万勰. 应用力学的辛数学方法[M]. 北京:高等教育出版社,2006: 70-75.

THOMPSON D J, VERHEIJ J W. The dynamic behaviour of rail fasteners at high frequencies[J]. Applied Acoustics, 1997, 52(1): 1-17.

FENANDER A. Frequency dependent stiffness and damping of railpads[J]. Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit, 1997, 211: 51-62.

MAES J, SOL H, GUILLAUME P. Measurements of the dynamic railpad properties[J]. Journal of Sound and Vibration, 2006, 293: 557-565.

韦凯,杨帆,王平,等. 扣件胶垫刚度的频变性对地铁隧道环境振动的影响[J]. 铁道学报,2015,37(4): 80-86. WEI Kai, YANG Fan, WANG Ping, et al. Influence of frequency-dependent stiffness of rail pads on environment vibration induced by subway in tunnel[J]. Journal of the China Railway Society, 2015, 27(4): 80-86.

REMINGTON P J. Wheel/rail rolling noise, Ⅰ: theoretical analysis[J]. The Journal of the Acoustical Society of America, 1987, 81(6): 1805-1823.

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文章访问数: 614
HTML全文浏览量: 69
PDF下载量: 313
被引次数: 0

扣件胶垫刚度频变的车-线-隧垂向耦合随机振动虚拟辛分析

doi: 10.3969/j.issn.0258-2724.2017.02.001

作者简介: 王平(1969-),男,教授,博士,研究方向为铁路轨道安全理论,电话:13608007071,E-mail:wping@home.swjtu.edu.cn

通讯作者: 韦凯(1980-),副研究员,博士,研究方向为轨道交通系统动力学及环境振动噪声,电话:13551098099,E-mail:wei_mike@163.com

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出版历程

Symplectic Random Vibration Analysis of Vertically Coupled Vehicle-Track-Tunnel System Considering Frequency-dependent Stiffness of Rail Pads

计量

出版历程

目录

作者简介:
王平(1969-),男,教授,博士,研究方向为铁路轨道安全理论,电话:13608007071,E-mail:wping@home.swjtu.edu.cn

通讯作者:
韦凯(1980-),副研究员,博士,研究方向为轨道交通系统动力学及环境振动噪声,电话:13551098099,E-mail:wei_mike@163.com