Research and analysis of elastic strip fatigue under stress controlled loading mode
DOI:
https://doi.org/10.21152/1750-9548.17.2.149Abstract
Fastener technology is a key technology of Ballastless track structure in high-speed railway, and the elastic strip is the key component to realize fastener function. To this end, a special loading fixture is fabricated to explore the performance of the elastic strip under fatigue load. The working state of the elastic strip was simulated through the fatigue testing machine, and the stress-controlled loading modes and four loading amplitudes (25±5kN, 25±7.5kN, 25±10kN, 25±12.5kN) are investigated. The pressure control method is used for fatigue tests, and the results show that: (1) As the load amplitude increases, the fatigue life decreases sharply and its decreasing speed is greater than the increasing speed of load amplitude; (2) The buckling pressure and displacement curves of the elastic strip have the characteristics of "increasing step-by-step" and "decreasing step-by-step"; (3) In the fatigue test, the attenuation of buckling pressure is 22% - 33% and the displacement at the front end of the ring is 18% - 25%; (4) According to the results, the buckling pressure curve and the displacement curve of the ring in the elastic strip are drawn, and the equations of them are fitted to estimate the service performance of the elastic strip.
References
Valikhani, M, Younesian, D., Application of an optimal wavelet transformation for rail-fastening system identification in different preloads. Measurement, 2016, 82: p. 161-175. https://doi.org/10.1016/j.measurement.2015.12.039
Jin, X.S., Wu, Y., Liang, S.L., Wen, Z.F., Mechanisms and Countermeasures of Out-of-Roundness Wear on Railway Vehicle Wheels. Journal of Southwest Jiaotong University, 2018, 53(1): p. 1-14.
Xiao, J.L., Liu, H., Liu, G.Z., Wang, Y., Wang, P., Study on Characteristics and Law of Longitudinal Resistance Hysteretic Curves of Ballast Bed of High. Journal of the China Railway Society, 2018, 40(2): p. 91-99.
Xu, L., Zhai W.M., Stochastic Model Used for Temporal-spatial Analysis of Vehicle-track Coupled Systems. Journal of the China Railway Society, 2018, 40(1): p. 74-79.
Feng, Q.S., Lei, X.Y., Lian, S.L., A dynamic model of ground for high-speed railway with track random irregularities. Journal of Vibration Engineering, 2013, 26(6): p. 927-934. DOI: https://doi.org/10.16385/j.cnki.issn.1004-4523.2013.06.014
Bae, H.U., Park, S.J., Yun, K.M., Park, B.H., Lim, N.H., Statistical Characteristics for Longitudinal Friction Behavior of Rail Fastening System for Concrete Track. Journal of Korea Academia-Industrial cooperation Society, 2015, 16(11): p. 7870-7877. https://doi.org/10.5762/KAIS.2015.16.11.7870
Zhao, G.T., Method for Determining the Rigidity of Railway Track. China Railway Science, 2005, (1): p. 1-5.
Wang, P., Zhou, C.S., Wei, K., Xu, H., The Energy Research on the Wheel- rail System in the Process of Stochastic Vibration. Journal of Railway Engineering Society, 2015, 32(5): p. 30-34+41.
Zhao, C.Y., Wang, P., Zhu, Y., Zhao, W.H., Xiao, J.L., Theoretical analysis and test for vibration damping fastenings. Journal of Vibration and Shock, 2012, 31(23): p. 191-196. https://doi.org/10.13465/j.cnki.jvs.2012.23.027
Cox, S., Installation and testing of vibration reducing track fastenings within the CONVURT project. Proceedings of the Tenth International Congress on Sound and Vibration. Stockholm: Institute of Acoustics, 2003, p. 379-386.
Bösterling, W., Innovative elastic rail fastening systems for slab track. ZEV Rail Glasers Annalen, 2011, 135(5): p. 172-175.
Krüger, F., New continuous rail fastener systems to reduce vibrations-investigations on a test rig and calculations by FEM. ZEV UND DET GLASERS ANNALEN, 2000, 124(5): p. 327-336.
Liu, X.Y., Zhang, Z.W., Wan, Z.B., Influence of fastener stiffness mutation in ballastless track on dynamic characteristics of high-speed trains. Journal of Railway Engineering Society, 2014, 31(9): p. 53-58.
Ren, J.J., Zhao. H.W., Li, X., Xu, K., Analysis of Harmonic Response of CRTS Ⅲ Prefabricated Slab Track with Anti-vibration Structure. Journal of Railway Engineering Society, 2016, 33(3): p. 44-50.
Zhao, P.R., Xiao, J.L., Liu, X.Y., The Influence of the Displacement at Bridge Ends to the Fastening Systems Used on Ballastless Tracks. Journal of the China Railway Society, 2008, (5): p. 68-73.
Wei, Y.H., Xu, H.S., Niu, B., Laboratory test and numerical analysis on the mechanical behaviors of the slab track fastener due to the beam-ending deformation. China Railway Science, 2010, 31(6): p. 43-49.
Wei, K., Zhang, P., Dou, Y.L., Wang, P., Zhou, C.S., Experimental Study on Temperature-dependent Mechanical Property of Rail Pads Used in Non-ballasted Track of High-speed Railway. Journal of the China Railway Society, 2016, 38(7): p. 98-104.
Hodge, M.H., Kausel, J., Theodore, C., Begley, M.R., Stress calculations for direct fastening track. Rail International, 2001, 32(1): p. 35-43.
Casado, J.A., Carrascal, I., Diego, S., Polanco, J.A., Gutiérrez‐Solana, F., García, A., Mechanical behavior of recycled reinforced polyamide railway fasteners. Polymer Composites, 2010, 31(7): p. 1142-1149. https://doi.org/10.1002/pc.20899
Diego, S., Casado, J. A., Carrascal, I., Polanco, J. A., & Gutiérrez-Solana, F., Experimental validation of an adjustable railway fastening for slab track. Journal of Testing and Evaluation, 2010, 38(5): p. 598-608. https://doi.org/10.1520/JTE102763
Koh, T., Shin, M., Bae, Y., Hwang, S., Structural performances of an eco-friendly prestressed concrete sleeper. Construction and Building Materials, 2016, 102(Part 1): p. 445-454. https://doi.org/10.1016/j.conbuildmat.2015.10.189
Zhu, J.Y., On the effect of rail fastener support failure on the dynamic behavior of railway track. Journal of Vibration Engineering, 2011, 24(2): p. 158-163. https://doi.org/10.16385/j.cnki.issn.1004-4523.2011.02.015
Wu, Z., Ma, W., Xiao, H. X., Zhang, J. K., Study on fatigue life of ballastless track fastener springs based on a fatigue test. International Journal of Structural Integrity, 2020, 11(6): p. 737-750. https://doi.org/10.1108/IJSI-11-2019-0120
Zakeri, J. A., Xia, H., & Fan, J. J., Effects of unsupported sleeper on dynamic responses of railway track. Journal of Northern Jiaotong University, 2000, (1): p. 50-55.
Xiao, X.B., Wen, Z.F., Jin, X.S., Effect of Track Support Failure on Dynamic Responses and Riding Comfort of Vehicle System. Journal of the China Railway Society, 2007, (6): p. 26-33.
Zhou, L., Shen, Z.Y., Dynamic analysis of a high-speed train operating on a curved track with failed fasteners. Journal of Zhejiang University SCIENCE A, 2013, 14: p. 447-458. https://doi.org/10.1631/jzus.A1200321
Tian, C.X., Yan, H., Xiong, W., Discussion on the Space between Fastenings on High-speed Railway. Railway Standard Design, 2013, (8): p. 32-36. https://doi.org/10.13238/j.issn.1004-2954.2013.08.011
Zhu, S.Y., Cai, C.B., Yin, B., Xu, P., Dynamic analysis of rail fastening clip in high-speed railway. Engineering Mechanics, 2013, 30(6): p. 254-258+287.
Wang, S.W., Analysis of Structural Damping Property of Rail Fastening Rubber Absorber. Railway standard design, 2015, 59(1): p. 37-41+46. https://doi.org/10.13238/j.issn.1004-2954.2015.01.009
Sun, L., Duan, Y.F., Yang X., Static Response Analysis of CRTS Ⅲ Ballastless Track Structure. Journal of Railway Engineering Society, 2013, (11): p. 32-39.
Zhang, S.F., Analysis on fastening force of ballastless track. Chengdu: Southwest Jiaotong University. 2016. https://doi.org/10.25103/jestr.093.16
Rakow, A, Chang, F.K., A structural health monitoring fastener for tracking fatigue crack growth in bolted metallic joints. Structural Health Monitoring, 2012, 11(3): p. 253-267. https://doi.org/10.1177/1475921711429497
Du, Y.L., Zhang, Y.Z., Zhao, W.G., Construction of safety monitoring system for high-speed railway line engineering. China Civil Engineering Journal, 2012, 45(S2): p. 59-63. https://doi.org/10.15951/j.tmgcxb.2012.s2.023
Du, Y.L., Su, M.B., Liu, Y.H., Wang, Q.M., Study on the Long-term Health Monitoring and Safety Evaluation System for the Wuhan Yangtze River Bridge. Journal of the China Railway Society, 2015, 37(4): p. 101-110.
Xiong, J.Y., Shen, Z.Y., Rise and future development of Chinese high-speed railway. Journal of Traffic and Transportation Engineering, 2021, 21(5): p. 6-29. https://doi.org/10.19818/j.cnki.1671-1637.2021.05.002
Published
How to Cite
Issue
Section
Copyright (c) 2023 J Huang, Z Wu, X Y Zhang
This work is licensed under a Creative Commons Attribution 4.0 International License.