Simulation of Train Crashes in Three Dimensions

Han, Hyung-Suk; Koo, Jeong-Seo

doi:10.1076/vesd.40.6.435.17906

Cited by 53 publications

(22 citation statements)

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“…국내에 충돌안전기준이 도입되기 이전에 G7 연 구과제에서 개발된 KHST는 유럽의 SNCF 기준을 참고하였 기 때문에 철도 건널목 충돌 사고 시뮬레이션에서 강체 장 애물을 사용하였다 [4,5].…”

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Development of FE Models of the Heavy Obstacle for the EU-TSI and Domestic Rolling Stock Safety Regulations and Application to Collision Evaluation of the Korean High-speed EMU

Kim¹,

Koo²

2011

Journal of the Korean society for railway

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The purpose of this paper is to develop two kinds of finite element models for the heavy deformable obstacle defined in grade crossing collision scenario of the Europe TSI and the Korean rolling stock safety regulations and to apply the crashworthiness evaluation for the Korean high-speed EMU with the FE model. The numerical models of the heavy obstacle were changed from a past rigid one to a current deformable one whose stiffness requirement should be verified by a collision simulation defined in the regulations. Through several trial simulations, two types of numerical models for the heavy obstacle were developed, which satisfied physical properties specifies in the regulations. One is a solid-type obstacle with uniform density and the other is a shell-type. With the obstacles developed in this study, the grade crossing collision scenario for Korean high-speed EMU was simulated and evaluated for the two-type obstacle models. From the simulation results, the shell and solid-type obstacles showed quite different behaviors after collision, and the shell type model gave more severe results.

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Development of FE Models of the Heavy Obstacle for the EU-TSI and Domestic Rolling Stock Safety Regulations and Application to Collision Evaluation of the Korean High-speed EMU

Kim¹,

Koo²

2011

Journal of the Korean society for railway

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“…Differing from the single-body crash of a vehicle, train collision is usually the coupled collisions of multiple vehicles. When the two end trunks of two trains are in contact and then collide with each other, the vehicle thereafter is supposed to collide in sequence with the front vehicle [12][13][14]. Three-dimensional crash simulations of a high-speed train were conducted by using multibody dynamics, which showed that it was possible to simulate overriding, derailment, and lateral buckling, but several factors such as computational time and large deformation of the structures needed further investigation [13].…”

Section: Introductionmentioning

confidence: 99%

“…When the two end trunks of two trains are in contact and then collide with each other, the vehicle thereafter is supposed to collide in sequence with the front vehicle [12][13][14]. Three-dimensional crash simulations of a high-speed train were conducted by using multibody dynamics, which showed that it was possible to simulate overriding, derailment, and lateral buckling, but several factors such as computational time and large deformation of the structures needed further investigation [13]. A validated multibody-based model was presented for the design of train crashworthy components, and the validated model was applied to the collision of two different trains [15].…”

Section: Introductionmentioning

confidence: 99%

Simulation Analysis of a Multiple‐Vehicle, High‐Speed Train Collision Using a Simplified Model

Xie

Yang

2018

Shock and Vibration

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To solve the problems associated with multiple-vehicle simulations of railway vehicles including large scale modelling, long computing time, low analysis efficiency, need for high performance computing, and large storage space, the middle part of the train where no plastic deformation occurs in the vehicle body was simplified using mass and beam elements. Comparative analysis of the collisions between a single railway vehicle (including head and intermediate vehicles before, and after, simplification) and a rigid wall showed that variations in impact kinetic energy, internal energy, and impact force (after simplification) are consistent with those of the unsimplified model. Meanwhile, the finite element model of a whole high-speed train was assembled based on the simplified single-vehicle model. The numbers of nodes and elements in the simplified finite element model of the whole train were 63.4% and 61.6%, respectively, compared to those of the unsimplified model. The simplified whole train model using the above method was more accurate than the multibody model. In comparison to the full-size finite element model, it is more specific, had more rapid computational speed, and saved a large amount of computational power and storage space. Finally, the velocity and acceleration data for every car were discussed through the analysis of the collision between two simplified trains at various speeds.

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“…Research on railway vehicle crashworthy and occupant secondary impact safety has been developed for many years, and lots of achievements are made [1]- [7]. For example, British Rail developed a series of studies on secondary impact of occupant and passenger compartment structures, and drew up the crashworthiness for interior trim structures in vehicle and devised occupant protection standard AV/ST9001 [8]- [11].…”

Section: Introductionmentioning

confidence: 99%

Research on Secondary Impact Safety of Train Driver based on THUMS Dummy

Wang

Yue

et al. 2016

MATEC Web Conf.

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Abstract. Based on biomechanical Total Human Model for Safety (THUMS) dummy and traditional rigid dummy, the train driver injury of secondary impact in railway crash events is analyzed and the results are compared. The results of THUMS dummy are more detail and comprehensive to describe the injury of train driver. It could be applied to the safety research of crashworthiness of train driver cab in future. The driver injury is serious and needed to be optimized the parameter of cab console to reduce injury risk for the driver in the next work.

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Simulation of Train Crashes in Three Dimensions

Cited by 53 publications

References 0 publications

Development of FE Models of the Heavy Obstacle for the EU-TSI and Domestic Rolling Stock Safety Regulations and Application to Collision Evaluation of the Korean High-speed EMU

Development of FE Models of the Heavy Obstacle for the EU-TSI and Domestic Rolling Stock Safety Regulations and Application to Collision Evaluation of the Korean High-speed EMU

Simulation Analysis of a Multiple‐Vehicle, High‐Speed Train Collision Using a Simplified Model

Research on Secondary Impact Safety of Train Driver based on THUMS Dummy

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