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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 국제구조공학회 Structural Engineering and Mechanics, An Int'l Journal Structural Engineering and Mechanics, An Int'l Journal Vol.63 No.5
- 발행연도
- 2017.1
- 수록면
- 659 - 667 (9page)
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초록· 키워드
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Rail support failure is inevitably subjected to track geometric deformations. Due to the randomness and evolvements of track irregularities, it is naturally a hard work to grasp the trajectories of dynamic responses of railway systems. This work studies the influence of rail fastener failure on dynamic behaviours of wheel/rail interactions and the railway tracks by jointly considering the effects of track random irregularities. The failure of rail fastener is simulated by setting the stiffness and damping of rail fasteners to be zeroes in the compiled vehicle-track coupled model. While track random irregularities will be transformed from the PSD functions using a developed probabilistic method. The novelty of this work lays on providing a method to completely reveal the possible responses of railway systems under jointly excitation of track random irregularities and rail support failure. The numerical results show that rail fastener failure has a great influence on both the wheel/rail interactions and the track vibrations if the number of rail fastener failure is over three. Besides, the full views of time-dependent amplitudes and probabilities of dynamic indices can be clearly presented against different failing status.
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참고문헌 (29)
참고문헌 신청
Andersson, R. / 2015 / An efficient approach to the analysis of rail surface irregularities accounting for dynamic train-track interaction and inelastic deformations / Veh. Syst. Dyn 53:1667~1685
Carrascal, I. A. / 2016 / Dynamic behavior of high-speed rail fastenings in the presence of desert sand / Constr. Build. Mater 117:220~228
Chen, G. / 2004 / A new wheel/rail spatially dynamic coupling model and its verification / Veh. Syst. Dyn 41:301~322
Chen, J. B. / 2013 / Stochastic harmonic function representation of stochastic processes / J. Appl. Mech 80(1):011001
Chen, Z. / 2014 / Parametric study on damage and load demand of prestressed concrete crosstie and fastening systems / Eng. Fail. Anal 46:49~61
Carrascal, I. A. / 2016 / Dynamic behavior of high-speed rail fastenings in the presence of desert sand / Constr. Build. Mater 117:220~228
Chen, G. / 2004 / A new wheel/rail spatially dynamic coupling model and its verification / Veh. Syst. Dyn 41:301~322
Chen, J. B. / 2013 / Stochastic harmonic function representation of stochastic processes / J. Appl. Mech 80(1):011001
Chen, Z. / 2014 / Parametric study on damage and load demand of prestressed concrete crosstie and fastening systems / Eng. Fail. Anal 46:49~61
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