Rail vehicle crashworthiness based on collision energy management: an overview

Zhu, Tao; Xiao, Shoune; Cheng, Longdi; Wang, Xiaorui; Zhang, Jingke; Yang, Bing; Yang, Guangwu; Li, Yuru

doi:10.1080/23248378.2020.1777908

Cited by 27 publications

(18 citation statements)

References 67 publications

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“…The different curve radii correspond to different collision responses. Because the sub-indexes of cab floor crush deformation, the body ends deformation, and deceleration has different dimensions and magnitudes, the sub-indexes can be standardised to reduce the influence of the diversity of the dimensions and magnitudes of the sub-indexes on the assessment results, 28 as shown in equation (1).…”

Section: Methodology For Calculating Train Derailment Collision Damag...mentioning

confidence: 99%

“…Globally, many countries have performed vehicle crashworthiness studies and formed corresponding standards for the development and design of crashworthy vehicles, such as the European EN15227 standard, North American CFR229/ 238 standard, and Chinese TB/T3500 standard. 1 However, train collisions are diverse and most existing standards are set for frontal collisions without any requirements for side collisions and collision scenarios between trains and other trackside buildings. 2,3 Current research on train collisions is primarily focused on the collision dynamics theory, [4][5][6][7][8] numerical collision simulation techniques, [9][10][11][12][13][14][15][16] collision energy management, [17][18][19][20] and tests.…”

Section: Introductionmentioning

confidence: 99%

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Simulation method for train curve derailment collision and the effect of curve radius on collision response

Zhu

Xiao

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part F:

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A method of collaborative simulation of the train collision process using a rigid motion model and a flexible collision model is proposed to solve the problem of the low computational efficiency of the finite element numerical simulation of the train collision process. This study investigated the collision response of a train derailment hitting a platform with different curve radii based on an accident in which a subway train derailed and hit a platform. Based on the results, a collision damage index is proposed to assess the relative degree of damage of train derailment collisions at different curve radii. The results reveal that within a certain radius of the curve (when the impact distance D exists), there is a positive correlation between the curve radius and the collision damage index, and when the curve radius exceeds a certain value (when the impact distance D doesn’t exist), the train and platform don’t collide.

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Section: Methodology For Calculating Train Derailment Collision Damag...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Simulation method for train curve derailment collision and the effect of curve radius on collision response

Zhu

Xiao

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part F:

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“…Zhou et al established a train collision model and found that the coupler and buffer device have a great impact on train collision safety [4]. Zhu et al reviewed the research on passive rail vehicle safety in recent decades from the perspective of collision energy management (CEM) and established a mechanical model of couplers and buffers to analyse their impact on train collision behaviour [5]. Zhang et al established a new locomotive dynamics model to study the impact of the locomotive coupler buffer system on the operational safety of heavy-duty locomotives [7].…”

Section: Introducntionmentioning

confidence: 99%

Dynamics Modeling and Simulation Analysis of a Gas-hydraulic Buffer Based on AMESim

Feng

Heng

Wang³

et al. 2023

Preprint

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Previous studies on train crash behaviour have focused on the entire train buffer system, and few studies have focused on the internal structure and dynamic characteristics of the gas-hydraulic buffer in the buffer device. In this paper accurate three-dimensional and dynamic models of a gas-hydraulic shock absorber are constructed, and a simulation model of the gas-hydraulic shock absorber is established using the AMESim software platform. Based on this model, the influence of the structural parameters of the gas-hydraulic buffer and the parameters of the internal working medium on its dynamic characteristics is studied, which provides a reference for the practical application, development and optimization of gas-hydraulic buffers in the future. Compared with the impedance force-travel data curve of an impact trolley crash test at different speeds, it is proven that the model can simulate the dynamic characteristics of the gas-hydraulic buffer in the collision process. Key words: Gas-hydraulic buffer; Dynamic characteristics; Structural parameters; Working medium; Simulation analysis

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“…The collision between trains is an extremely complex and nonlinear process, often accompanied by instability forms such as climbing, collision-induced derailment and overturning after derailment [4]. Carrying out a full-scale train-to-train crash test is the most effective and convincing method, which is of great significance for scientifically reproducing the collision response of trains and truly assessing the safety performance of train collisions [5,6]. However, the research on train crash test is not only extremely expensive but also has low repeatability and certain safety risk.…”

Section: Introductionmentioning

confidence: 99%

Full-Scale Train-to-Train Impact Test and Multi-Body Dynamic Simulation Analysis

Zhao

et al. 2021

Machines

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When a train crashes with another train at a high speed, it will lead to significant financial losses and societal costs. Carrying out a train-to-train crash test is of great significance to reproducing the collision response and assessing the safety performance of trains. To ensure the testability and safety of the train collision test, it is necessary to analyze and predict the dynamic behavior of the train in the whole test process before the test. This paper presents a study of the dynamic response of the train in each test stage during the train-to-train crash test under different conditions. In this study, a 1D/3D co-simulation dynamics model of the train under various load conditions of driving, collision and braking has been established based on the MotionView dynamic simulation software. The accuracy of the numerical model is verified by comparing with a five-vehicle formations train-to-train crash test data. Sensitivities of several key influencing parameters, such as the train formation, impact velocity and the vehicle mass, are reported in detail as well. The results show that the increase in the impact velocity has an increasing effect on the movement displacement of the vehicle in each process. However, increasing the vehicle mass and train formation has almost no effect on the running displacement of the braking process of the traction train. By sorting the variables in descending order of sensitivity, it can be obtained that impact speed > train formation > vehicle mass. The polynomial response surface method (PRSM) is used to construct the fitting relationship between the parameters and the responses.

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Rail vehicle crashworthiness based on collision energy management: an overview

Cited by 27 publications

References 67 publications

Simulation method for train curve derailment collision and the effect of curve radius on collision response

Simulation method for train curve derailment collision and the effect of curve radius on collision response

Dynamics Modeling and Simulation Analysis of a Gas-hydraulic Buffer Based on AMESim

Full-Scale Train-to-Train Impact Test and Multi-Body Dynamic Simulation Analysis

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