Study on detection of the early signs of derailment for railway vehicles

Hung, Chinglin; Suda, Yoshihiro; Aki, Masahiko; Tsuji, Takashi; Morikawa, Masato; Yamashita, Takayoshi; Kawanabe, Tetsuya; Kunimi, Takashi

doi:10.1080/00423114.2010.486862

Cited by 16 publications

(3 citation statements)

References 4 publications

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“…In paper [7] a technique using acceleration sensors to detect early signs of wheel pair derailment is presented. The algorithm for detecting wheel pair derailment is tested by means of simulation and experimental research on a scale model of a train.…”

Section: Analysis Of Literary Data and Problem Statementmentioning

confidence: 99%

Research of safety indicators of diesel train movement with two-stage spring suspension

et al. 2018

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The problem of the interaction of rolling stock with the rail track has been analyzed in the present paper. It has been established that in the process of transport science development a number of methods for determining the causes of wheel pairs derailment are developed, which, in a varying degree, take into account the peculiarities of their interaction. The problem of choosing the most accurate method for estimating the causes of rolling stock derailment becomes more complicated because of the lack of sufficient experimental data that would allow us to verify the adequacy of the models. The indicators of stability of the wheel against derailment, which are used on the railways of Ukraine and Europe, have been examined. Their dependences on the speed of movement were derived. It has been established that the increase of the speed of motion leads to the increase of the interaction power of the rolling stock with the rail track, which may, under certain operational parameters, provoke its derailment. As a result of the calculations, it has been shown that the use of norms for car design and calculation used on Ukrainian railways can lead to an inadequate estimation of traffic safety parameters, since it does not take into account the unevenness of the railway track. It has been established that the requirements of BS EN 14363: 2005 European norms are stricter in comparison with the norms for calculation and evaluation of the bearing elements strength and dynamic qualities of motor-vehicle rolling stock used on Ukrainian railways. A comparison of the experimentally and theoretically calculated values of the stability margin coefficient against wheel derailment of the first wheel pair of the diesel train car was carried out.

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Section: Analysis Of Literary Data and Problem Statementmentioning

confidence: 99%

Research of safety indicators of diesel train movement with two-stage spring suspension

et al. 2018

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“…In terms of the aspect of train derailment, Hung et al [15] proposed a technology to detect the early signs of train derailment. A numerical analysis was conducted using a scaled vehicle model to simulate wheelclimb derailment at low speeds.…”

Section: Introductionmentioning

confidence: 99%

Study on Dynamic Damage of Crash Barrier under Impact Load of High-Speed Train

Qian,

Wang,

et al. 2024

Sustainability

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The derailment of a high-speed train in a tunnel will cause a very serious accident, but there are few research articles on anti-collision facilities in tunnels. In order to promote the sustainable development of high-speed trains and reduce the severity of accidents caused by derailment in tunnels of high-speed trains, this paper puts forward a crash barrier scheme in tunnels through the method of numerical simulation; the coupling finite element model of train–crash barrier–tunnel is established by using ABAQUS. The changes in lateral velocity and lateral displacement after the train hits the crash barrier without embedding steel bars are explored. We also explore the influence of different reinforcement amounts on the changes in the lateral speed and lateral displacement of trains under the condition of embedding steel bars. The results show that with the increase in stirrups and vertical reinforcement, the anti-impact and sustainable operation capability of the crash barrier are greater. It can also be seen from the lateral displacement of the train that the train shows the reverse movement trend, and the crash barrier plays a good role in intercepting the train. These research results can provide a reference for the sustainable development of transportation infrastructure construction.

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“…Durali and Shadmehri [19] established a nonlinear comprehensive model to predict derailment in different operating conditions. Hung et al [20] developed a technique for detecting the early signs of the derailment of a railway vehicle. Besides, postderailment devices were designed to limit the extent of derailment, and relevant experiments were carried out to validate its effectiveness [21,22].…”

Section: Introductionmentioning

confidence: 99%

Investigation on Derailment of Empty Wagons of Long Freight Train during Dynamic Braking

Wang

Guo

et al. 2018

Shock and Vibration

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The derailments of empty wagons of long freight trains frequently occurred around the world, which caused tremendous losses every year. Aiming at an actual derailment of empty wagons on straight line during dynamic braking, the field investigation was conducted to find the reasons of the accident. According to the investigation results, the large coupler yaw angle and coupler force, the special connection mode by drawbars, as well as the poor conditions of wheel treads and flanges were supposed to be responsible for the accident. The simulaiton model composed of 3 C80-type gondolas, and two RFC-type drawbars is established, the accuracy of which is validated by the field experimental test. When the wheel-rail friction coefficient is set to be 0.7 and the coupler forces are set to be 350 kN with a coupler yaw angle of 7 degrees, the simulation results are consistent with the field investigation results. Simulation results indicate that the coupler yaw angle, coupler force, and wheel-rail friction coefficient have significant influences on the derailment. The increasing coupler yaw angle and coupler force will increase the risk of derailment. For the wagon units adopting the drawbars, the riskiest wagon changes from the middle wagon to the front one as the lateral components of the coupler forces increase. A large wheel-rail friction coefficient can raise the risk of derailment. However, an overlarge friction coefficient will decrease the derailment risk. According to the field investigation and simulation results, the wheel-rail friction coefficients should be limited below 0.5 to ensure the running safety of empty wagons. Besides, the operations of the train should be optimized to avoid large coupler yaw angle and coupler force.

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Study on detection of the early signs of derailment for railway vehicles

Cited by 16 publications

References 4 publications

Research of safety indicators of diesel train movement with two-stage spring suspension

Research of safety indicators of diesel train movement with two-stage spring suspension

Study on Dynamic Damage of Crash Barrier under Impact Load of High-Speed Train

Investigation on Derailment of Empty Wagons of Long Freight Train during Dynamic Braking

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