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《Chinese Journal of Theoretical and Applied Mechanics》 2008-01
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EFFECT OF TRACK SUPPORT FAILURE ON DYNAMIC RESPONSE OF TANGENT TRACK

Xiao Xinbiao Jin Xuesong Wen Zefeng (State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu (310031, China)  
In order to investigate the effect of track support failure on dynamic response of tangent track, a vehicle-track coupling dynamic model is established, in which the rails are assumed to be Timoshenko beams resting on the discrete sleepers. The failure situation of track components under the tangent track is simulated by the abrupt changes of track stiffness along the track. The effect of the discrete sleeper supports on the coupling dynamics of the vehicle and track is taken into consideration by the excitation model of moving sleeper supported. As to the interaction of wheel and rail system, the creepage formulas of wheel/rail rolling contact are deduced, in which the lateral, vertical and torsional motions of rail are taken into account. The normal forces of wheel/rail are calculated by the Hertzian contact theory and the creep forces of wheel/rail in rolling contact are decided by the nonlinear creep theory of Shen et al. The motion equations of the vehicle/track coupling system are solved with the new explicit integration method. Effect of zero, two, four and six track supports in failure situation on tangent track dynamic response is analyzed and evaluated. The numerical results indicate that track support failure greatly affects dynamic response of tangent track. With the increasing of failure number, the wheel/rail normal forces, displacement and acceleration of track components increase quickly, which will deteriorate the track.
【Fund】: 国家自然科学基金(50521503);; 教育部创新团队执行计划(IRT0452);; 全国百篇优秀博士学位论文作者专项基金(200248)资助项目.~~
【CateGory Index】: U213.2
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【Citations】
Chinese Journal Full-text Database 2 Hits
1 Jabbar Ali ZAKERI,XIA He,FAN Jun jie (College of Civil Engineering and Architecture, Northern Jiaotong University, Beijing 100044,China);Effects of Unsupported Sleeper on Dynamic Responses of Railway Track[J];Journal of Northern Jiaotong University;2000-01
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【Co-citations】
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1 GAO Chun-ming1,JI Bin1,ZHANG Bo2,MA Da-wei2(1.Committee of Sciences and Technology,Taiyuan railway Administration,Taiyuan 030013,China; 2.Railway Science and Technology Research and Development Center,China Academy of Railway Sciences,Beijing 100081,China);Research and application of LOCOTROL technologies for heavy haul trains on Datong-Qinhuangdao railway line[J];Electric Locomotives & Mass Transit Vehicles;2006-06
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3 WEI Zhi-jun1,2,PIAO Ming-wei1,WEI Hong-liang2,ZHAO Wen-zhong1(1.School of Mechanical Engineering,Dalian Jiaotong University,Dalian 116028,China;2.Technical Research Center of Qiqihaer Rolling Stock(Group) Co.,Ltd.,Qiqihaer 161000,China);Improved Lateral Stability Strategy of Side-Bearing Griders of D45-Type 450t-Laden Well Wagon[J];Journal of Dalian Jiaotong University;2008-05
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6 LU Wen-fei,ZHANG You-chen(College of Mechanical and Electrical Engineering,Beijing University of Chemical Technology,Beijing 100029,China);Study on simulation modeling of train's longitudinal jerk[J];Mechanical & Electrical Engineering Magazine;2007-03
7 Huang Yun-hua~1,Li Fu~1,Fu Mao-hai~1,Liao Xiao-ping~2(1.School of Mechanical Engineering,Southwest Jiaotong University, Chengdu 610031,China;2.Product Department of Technical Center,Beijing Erqi Rolling Stock Works,CSR,Beijing 100072,China);Dynamic characteristic of new hydro-pneumatic buffer for railway vehicle[J];Journal of Traffic and Transportation Engineering;2005-04
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China Proceedings of conference Full-text Database 1 Hits
1 LIU Yinhua1, LIU Hua1, YANG Zhimeng1, LI Fu2 (1.Technology Center,JiNan Rail Transportation Equipment Co.,Ltd,Jinan Shangdong 250022,China 2. School of Mechanical Engineering,Southwest Jiaotong University,Chengdu Sichuan 610031,China);A New Heavy Axle Load Bogies Design[A];[C];2008
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