Modelling and analysis of the crush zone of a typical Australian passenger train

Sun, Yan Quan; Cole, Colin; Dhanasekar, Manicka; Thambiratnam, David

doi:10.1080/00423114.2012.656658

Cited by 40 publications

(12 citation statements)

References 20 publications

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“…A typical freight wagon model from GENSYS (Sun et al 2011(Sun et al , 2012 is shown in Figure 1. This model includes 11 masses -one wagon car body, 2 bolsters, 4 sideframes and 4 wheelsets, which are modelled as rigid bodies with six degrees of freedom.…”

Section: Multi-body Rail Wagon Modellingmentioning

confidence: 99%

Wheel–rail Wear Investigation on a Heavy Haul Balloon Loop Track Through Simulations of Slow Speed Wagon Dynamics

et al. 2018

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Heavy haul railway track infrastructure are commonly equipped with balloon loops to allow trains to be loaded/unloaded and/or to reverse the direction of travel. The slow operational speed of trains on these sharp curves results in some unique issues regarding the wear process between wheels and rails. A wagon dynamic system model has been applied to simulate the dynamic behaviour in order to study the wheel–rail contact wear conditions. A wheel–rail wear index is used to assess the wear severity. The simulation shows that the lubrication to reduce the wheel–rail contact friction coefficient can significantly reduce the wear severity. Furthermore, the effects of important parameters on wheel–rail contact wear including curve radius, wagon speed and track superelevation have also been considered.

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Section: Multi-body Rail Wagon Modellingmentioning

confidence: 99%

Wheel–rail Wear Investigation on a Heavy Haul Balloon Loop Track Through Simulations of Slow Speed Wagon Dynamics

et al. 2018

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“…At the beginning, a single passenger vehicle was modeled by using GENSYS (Sun et al, 2012(Sun et al, , 2013(Sun et al, , 2017a and its model is shown in Figure 2A. For the better display, one bogie in Figure 2A is zoomed and shown in Figure 2B, which clearly shows the bogie components and connections, and the guard rails on the track are also included.…”

Section: Train-track Multi-body Dynamics Modelingmentioning

confidence: 99%

Mitigating Train Derailments Due to Sharp Curve and Overspeed

Sun

2018

Front. Mech. Eng.

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Each year around the world there are still several cases of train derailments on the curved tracks due to overspeed, leading to big casualties and costs to the rail industries. With the ongoing increase on the speed, the possibility of train derailment will increase, especially on the sharp curved tracks. Two guard rails (or check rails) are usually required to be placed inside and parallel to two running rails along restrictive clearance areas of the bridge, tunnel, and turnout, preventing the rail vehicle wheels from turning over the rails in case of derailment. However, the investigation on the guide rail which is used to mitigate the train derailment due to a curved track and overspeed is carried out in this paper through the simulations. On sharp curved tracks, one guard rail can be placed inside the low rail, where it engages the back of the wheel flange. The simulations demonstrate that the guard rail can reduce the train derailment potential caused by a sharp curve and overspeed. The lateral clearance between wheel rim back and guard rail, as well as the height over the low rail top, is crucial in the effectiveness of guard rail. Their optimal selections could be obtained through the further simulations.

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“…Sun et al. 21 used a multibody dynamics approach to develop a three-dimensional non-linear rigid body model for the investigation of the crashworthiness of a passenger train. Jacobsen et al.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the crashworthiness design and collision dynamics of a subway train

Xie

Zhou

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part F:

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In this study, the crashworthiness of a subway train was assessed by establishing a finite element model for the first three carriages of the train and the track using the Hypermesh software. By utilising the *MAT_HONEYCOMB material model, a honeycomb in an anti-climbing energy-absorbing device was simulated. Moreover, the process of a subway train – travelling at a speed of 25 km/h – colliding with another identical train in a stationary and non-braking state was simulated by employing the finite element analysis software Hypermesh and LS-DYNA. The process of simulation analysis was divided into two parts: (1) analysis of the anti-climbing energy-absorbing devices under static compression for the investigation of energy absorption and (2) collision analysis of the whole train. The contributions of the proposed energy-absorbing structure – at the end of driver’s cab, the coupler and draft gears on each section – to the overall energy absorption in a train collision were calculated. Furthermore, based on the EN15227 standard, the crashworthiness of the train with respect to the survival space for occupants, train acceleration and uplift of wheels relative to the track was evaluated. The coupler of the first carriage fails in a collision at 25 km/h, and the coupler and draft gear are the main energy-absorbing devices. *MAT_HONEYCOMB was used to define the honeycomb materials in anti-climbing energy-absorbing devices and could simulate the mechanical performance thereof. The crashworthiness of the train meets the relevant standard requirements.

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Modelling and analysis of the crush zone of a typical Australian passenger train

Cited by 40 publications

References 20 publications

Wheel–rail Wear Investigation on a Heavy Haul Balloon Loop Track Through Simulations of Slow Speed Wagon Dynamics

Wheel–rail Wear Investigation on a Heavy Haul Balloon Loop Track Through Simulations of Slow Speed Wagon Dynamics

Mitigating Train Derailments Due to Sharp Curve and Overspeed

Analysis of the crashworthiness design and collision dynamics of a subway train

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