Development of a passenger rail vehicle crush zone

Mayville, Ronald A.; Stringfellow, Richard; Rancatore, Robert J.; Johnson, K

doi:10.1109/rrcon.1999.762408

Cited by 9 publications

(7 citation statements)

References 1 publication

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“…Analyses and tests are used to fill in the gaps of information available from accidents (6,7,8,9,10,11). Analytic models and tests, similar to those developed and conducted for the conventional equipment, are used to evaluate the effectiveness of the alternative designs (6,8,12,13,14). 4.…”

Section: Researchmentioning

confidence: 99%

Rail passenger equipment accidents and the evaluation of crashworthiness strategies

Tyrell

2002

Proceedings of the Institution of Mechanical Engineers, Part F:

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The U.S. Department of Transportation's Federal Railroad Administration's (FRA) Office of Research and Development has been conducting research into rail equipment crashworthiness. The approach taken in conducting this research has been to review relevant accidents, identify options for design modifications to improve occupant survivability, and to apply analytic tools and testing techniques for evaluating the effectiveness of these strategies. Accidents have been grouped into three categories: train-to-train collisions, collisions with objects, such as grade crossing collisions, and derailments and other single train events. In order to determine the potential effectiveness of improved crashworthiness equipment, computer models have been used to simulate the behavior of conventional and modified equipment in scenarios based on accidents. INTRODUCTIONTrain accidents can be tragic events, with loss of life and serious injuries. The crashworthiness features of the train are intended to minimize fatalities and injuries if an accident does occur. The purpose of such features is to preserve sufficient space for the occupants to ride out the collision, and to maintain the forces and decelerations imparted to the occupants within survivable levels. Structural features of the cars, such as longitudinal strength of the carbody and crush zones at the ends of cars, influence how well the cars preserve the occupant volume during a collision and the decelerations imparted to the occupants. Occupant protection features inside the car, such as compartmentalization, influence the forces imparted to the occupants.

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Section: Researchmentioning

confidence: 99%

Rail passenger equipment accidents and the evaluation of crashworthiness strategies

Tyrell

2002

Proceedings of the Institution of Mechanical Engineers, Part F:

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“… Study of the crashworthiness of passenger trains at level crossing [5];  Development of passenger train crush zone [6];  A proposal for using foams in the nose section of high speed trains [10]; In general in this study has been tried to recommend an applicable and cost-effective way for improving the passive safety due to the ability and capability in the domestic rail industry, so the authors propose the design of an appropriate profile of the thin-walled tubes, and using of tubes in Iran Pardis Trainset are analyzed and evaluated. 1.…”

Section: Introductionmentioning

confidence: 99%

Improving Collision Energy Absorption In High Speed Train By Using Thin Walled Tubes

Salimi¹,

Molatefi²,

Rezvani³

et al. 2013

International Journal of Railway

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The purpose of this paper is investigating the effect and influence rates of utilizing thin walled energy absorption tubes for improving crashworthiness parameter by increasing energy absorption of the body in high speed railcars. In order to find this, a proper profile of available tubes is chosen and added to the structure of selected high speed train in Iranian railway network (Pardis Trainset) and then examined in the scenario of impact with other moving rolling stock. Because of the specific features of LS-DYNA 3D software at collision analysis, the dynamic simulation has been performed in LS-DYNA 3D. The results of the analysis clearly indicate the improvement of train crashworthiness as the energy absorption of structure increases more than 30 percent in comparison with the original body. This strategy delays and reduces the shock to the structure. The verification of the simulation is by using ECE R66 standard.

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“…Ideally, railway vehicles must be equipped with system of impact energy absorber, which contains of impact energy modules and crash zone area. Impact energy modules will absorb most of the impact energy during low speed collision, while crash zone areas are designed to absorb excess impact energy that cannot be absorbed by impact energy module in high-speed collision [3]. The goal of this energy absorption management is to keep the structural integrity of the saloon (passenger) area [4].…”

Section: Introductionmentioning

confidence: 99%

Numerical and Experimental Study on Railway Impact Energy Absorption Using Tube External Inversion Mechanism at Real Scale

Puja

Khairullah

Kariem

et al. 2006

KEM

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Impact energy and deceleration at a certain time are the most influenced factor to passenger’s safety when collision between railway vehicles occurred. In this paper, forced external inversion mechanism is considered as impact energy absorber. This mechanism is selected due to its constant inversion load along uniform tube [5] and the impact force is reduced because of its inertia effect [7]. Material used as energy absorber is mild steel. Numerical analysis using finite element method is utilized to study the energy absorption capacity and deceleration characteristic of tube external inversion mechanism for complex transient problem of collision. The real scale experimental study is used to validate the numerical analysis by crashing a moving vehicle to static train series where the impact energy absorber module using external inversion mechanism is attached in the tip of static train series. Characteristic that consider in numerical and experimental study are deformation and contact force. The deformation differences between numerical and experimental study are under 9%. Whereas for contact force, the experimental result of contact force disposed under 8% of numerical result for velocity of moving train at 10 and 15 km/h.

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Development of a passenger rail vehicle crush zone

Cited by 9 publications

References 1 publication

Rail passenger equipment accidents and the evaluation of crashworthiness strategies

Rail passenger equipment accidents and the evaluation of crashworthiness strategies

Improving Collision Energy Absorption In High Speed Train By Using Thin Walled Tubes

Numerical and Experimental Study on Railway Impact Energy Absorption Using Tube External Inversion Mechanism at Real Scale

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