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Research Papers

Using Full Scale Experiments to Verify a Simulation Used to Analyze the Safety of Rail Vehicles During Large Earthquakes

[+] Author and Article Information
Kazuhiko Nishimura

Department of Technology Research
and Development (KOMAKI),
Central Japan Railway Company,
1545-33 Ohyama, Komaki,
Aichi 485-0801, Japan
e-mail: kazuhiko.nishimura@jr-central.co.jp

Yoshiaki Terumichi

Department of Mechanical Engineering,
Sophia University,
7-1 Kioi-cho, Chyiyodaku,
Tokyo 102-8554, Japan
e-mail: y-terumi@sophia.ac.jp

Tsutomu Morimura

Vice President
Central Japan Railway Company,
2-1-8 Konan, Minatoku,
Tokyo 108-8204, Japan
e-mail: morimura@jr-central.co.jp

Masahito Adachi

Department of Technology Research
and Development (KOMAKI),
Central Japan Railway Company,
1545-33 Ohyama, Komaki,
Aichi 485-0801, Japan
e-mail: adachi@jr-central.co.jp

Yoshitaka Morishita

Department of Technology Research
and Development (KOMAKI),
Central Japan Railway Company,
1545-33 Ohyama, Komaki,
Aichi 485-0801, Japan
e-mail: yoshitaka.morishita@jr-central.co.jp

Masahiro Miwa

Department of Technology Research
and Development (KOMAKI),
Central Japan Railway Company,
1545-33 Ohyama, Komaki,
Aichi 485-0801, Japan
e-mail: m.miwa@jr-central.co.jp

1Present address: Chief Research Engineer, Vehicle Dynamics and Vehicle Structure Group, 1545-33 Ohyama, Komaki, Aichi 485-0801, Japan.

Manuscript received December 25, 2013; final manuscript received May 27, 2014; published online February 11, 2015. Assoc. Editor: Corina Sandu.

J. Comput. Nonlinear Dynam 10(3), 031013 (May 01, 2015) (9 pages) Paper No: CND-13-1323; doi: 10.1115/1.4027756 History: Received December 25, 2013; Revised May 27, 2014; Online February 11, 2015

A simulation model is used to calculate the rocking motion of a vehicle and how antiderailing guard rails work to prevent derailment when subject to large ground excitation and the results are verified through full scale testing. (1) The simple vehicle–track model should properly represent the rocking mechanism. (2) The effect of vehicle speed on the wheel/rail slide is also properly represented, thus the wheel/rail creep law model can be applied to the analysis of a running vehicle experiencing large rocking motion. (3) The action of the guard rail was equal in both the simulation and the full scale test, thus indicating that the simple antiderailing guard rail model sufficiently represents the dynamic interaction of the wheel/guard rail and the effect.

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Figures

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Fig. 3

Geometric relation between wheel and guard rail

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Fig. 4

Relation between the displacement and the contact force of the guard rail

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Fig. 5

Antiderailing guard rail

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Fig. 6

Overview of the full scale standstill test

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Fig. 7

Components of test vehicle in the standstill test

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Fig. 8

Overview of full scale roller rig test at KOMAKI, Central Japan Railway Company (wheel rotating)

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Fig. 12

The time history of vehicle rocking motions (standstill test and calculation, input: 1.2 Hz 100 mm)

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Fig. 13

Relation between the excitation amplitude and the amount of wheel lift (standstill test and calculation, input frequency: 1.2 Hz)

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Fig. 14

The time history of vehicle rocking motions (running test and calculation, input: 1.2 Hz 106 mm, vehicle speed 150 km/h)

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Fig. 15

Relation between the excitation amplitude and the amount of wheel lift (standstill and running test, calculation, input frequency: 1.2 Hz)

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Fig. 16

Relation between wheel/rail lateral slide and vehicle speed (input: 0.8 Hz, 116 mm, vehicle speed: 10 km/h and 150 km/h)

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Fig. 17

Comparison of vehicle motion and guard rail work in standstill test and calculation (input: 1.3 Hz, 115 mm, dy = 85 mm, dz = 15 mm)

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