Experimental and numerical investigation of fatigue failure for metro bogie cowcatchers due to modal vibration and stress induced by rail corrugation

Lai, Wei Chih; Sun, Yi; Zeng, Jing; Qu, Sheng

doi:10.1016/j.engfailanal.2022.106810

Cited by 22 publications

(9 citation statements)

References 31 publications

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“…The abovementioned conclusions are also based on the engineering application experience in the past ten years by different researchers. 7,24 Based on the abovementioned methods, the influences of different loads were analyzed and the main loads contributing most to the Y-direction stress at the concerning point were selected for condition-based structural health monitoring of the bogie frame.…”

Section: Motivationmentioning

confidence: 99%

“…The abovementioned conclusions are also based on the engineering application experience in the past ten years by different researchers. 7,24…”

Section: In Situ Investigation Of the Bogie Frame Fracturementioning

confidence: 99%

“…Liu et al 23 used the measured axle box accelerations as the input to conduct the structural optimization of the bogie frame cowcatchers, which encountered the fatigue failure problem due to modal vibration and rail corrugations. At the same time, Wei et al 8,24 established a rigid-flexible coupling multi-body dynamics system (MBDS) model to simulate the fatigue failure phenomena of the cowcatcher and analyzed the effect of the rail corrugations. Mei et al 25 proposed a fatigue test load spectrum compilation method for key pantograph components to study the reduction of the pantograph development cycle and optimization of its structural design.…”

Section: Introductionmentioning

confidence: 99%

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Fatigue stress estimation of metro bogie frame through frequency response functions by using limited sensors

Sun

Lai

et al. 2023

Structural Health Monitoring

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In this paper, the fatigue state estimation of the metro bogie frame is discussed based on limited sensors through frequency domain methods. The middle-frequency and high-frequency vibration fatigue damage cases of one metro bogie frame is discussed. The main excitations come from the wheel/rail interactions including wheel out-of-roundness and rail irregularities. The most common modal vibration of the bogie frame, where the transom bending deformation is dominant, is taken as the research object to study the possibilities of fatigue failure monitoring on concerned points of the bogie frame transom focusing on specific transfer paths. To eliminate unnecessary input signals which are not closely related to the occurrence of large stress amplitudes, the coherence analysis of different loads including the transmission load, carbody load and wheel-rail impact load is conducted through various methods including the short-time Fourier transform spectrum analysis, the magnitude-squared coherence analysis and the partial directed coherence analysis. Then the power spectral densities (PSDs) of the measured accelerations and cross power spectral densities (CPSDs) are calculated to obtain the transfer functions, whose output is the Y-axis stress at the concerned point. The stress PSDs are obtained using the instantly measured input accelerations and the prepared transfer function. Then the spectral moments and the stress amplitudes distribution functions are calculated through the frequency domain method to overcome the computational burden. The stress reconstructions based on inverse fast Fourier transform are analyzed and the fatigue damage results show good consistency with the experimental ones.

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Section: Motivationmentioning

confidence: 99%

“…The abovementioned conclusions are also based on the engineering application experience in the past ten years by different researchers. 7,24…”

Section: In Situ Investigation Of the Bogie Frame Fracturementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Fatigue stress estimation of metro bogie frame through frequency response functions by using limited sensors

Sun

Lai

et al. 2023

Structural Health Monitoring

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“…1,2 Thus, the vibration fatigue problem has become one of primary concerns for engineers when these structures are subjected to random dynamic loadings. [3][4][5][6][7][8][9][10][11][12] Real random vibration environment excitations usually have a wide frequency bandwidth, including some excitation frequencies that may resonate with the multi-order nature frequencies of given engineering structures. [13][14][15] Structural critical locations in such structures are generally subjected to complex multiaxial stress states, especially under multi-directional excitation conditions.…”

Section: Introductionmentioning

confidence: 99%

“…In the real world, a great many of engineering structures in service are often exposed to complex random vibration excitations 1,2 . Thus, the vibration fatigue problem has become one of primary concerns for engineers when these structures are subjected to random dynamic loadings 3–12 . Real random vibration environment excitations usually have a wide frequency bandwidth, including some excitation frequencies that may resonate with the multi‐order nature frequencies of given engineering structures 13–15 .…”

Section: Introductionmentioning

confidence: 99%

The influence of load correlation on vibration fatigue damage of symmetrical notched cantilever beam structures

Luo,

Zhou,

Fan

et al. 2023

Fatigue Fract Eng Mat Struct

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This paper aims to develop an innovative multiaxial fatigue criterion based on the stress invariant, in order to perform the fatigue damage analysis of engineering structures subjected to random vibrations. First, the change rule of structural vibration fatigue lifetime under different load correlation conditions is systemically studied by experiments. Then, the finite element analysis of such a structure, including the modal analysis and the spectral analysis, is implemented in order to compute the response stress power spectral density (PSD) functions at the critical fatigue‐prone location under coupled random acceleration base excitations. Finally, the influence rule of load correlation on the vibration fatigue damage of such a symmetrical structure is theoretically illustrated through formula derivation. Moreover, combined with the critical distance theory point method, the proposed time/frequency‐domain multiaxial fatigue criterion is applied for vibration fatigue lifetime evaluation of the structure. The lifetime prediction accuracy of the proposed multiaxial fatigue criterion is verified by comparing with the vibration fatigue test results.

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抑制多模态梁振动的时变边界方法

Wang,

Liu,

Pan

2023

J. Cent. South Univ.

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Experimental and numerical investigation of fatigue failure for metro bogie cowcatchers due to modal vibration and stress induced by rail corrugation

Cited by 22 publications

References 31 publications

Fatigue stress estimation of metro bogie frame through frequency response functions by using limited sensors

Fatigue stress estimation of metro bogie frame through frequency response functions by using limited sensors

The influence of load correlation on vibration fatigue damage of symmetrical notched cantilever beam structures

抑制多模态梁振动的时变边界方法

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