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Research Papers

Estimation of Dynamic Contact Force Between a Pantograph and Catenary Using the Finite Element Method

[+] Author and Article Information
Sung Pil Jung

System Reliability Research Center,Korea Automotive Technology Institute,74 Yongjeong-ri, Pungse-myeon, Dongnam-gu, Cheonan-si, Chungnam 330–912, South Koreaspjung@katech.re.krHigh-Speed Rail Systems Research Center,  Korea Railway Research Institute, 176, Cheoldo Bangmulgwan-ro, Uiwang-si, Gyeonggi, 437–757, South Koreaspjung@katech.re.krHigh-Speed Division,  Korea Railway Research Institute, 176, Cheoldo Bangmulgwan-ro, Uiwang-si, Gyeonggi, 437–757, South Koreaspjung@katech.re.kr

Young Guk Kim

System Reliability Research Center,Korea Automotive Technology Institute,74 Yongjeong-ri, Pungse-myeon, Dongnam-gu, Cheonan-si, Chungnam 330–912, South Koreaygkim@krri.re.krHigh-Speed Rail Systems Research Center,  Korea Railway Research Institute, 176, Cheoldo Bangmulgwan-ro, Uiwang-si, Gyeonggi, 437–757, South Koreaygkim@krri.re.krHigh-Speed Division,  Korea Railway Research Institute, 176, Cheoldo Bangmulgwan-ro, Uiwang-si, Gyeonggi, 437–757, South Koreaygkim@krri.re.kr

Jin Sung Paik

System Reliability Research Center,Korea Automotive Technology Institute,74 Yongjeong-ri, Pungse-myeon, Dongnam-gu, Cheonan-si, Chungnam 330–912, South Koreajspaik@krri.re.krHigh-Speed Rail Systems Research Center,  Korea Railway Research Institute, 176, Cheoldo Bangmulgwan-ro, Uiwang-si, Gyeonggi, 437–757, South Koreajspaik@krri.re.krHigh-Speed Division,  Korea Railway Research Institute, 176, Cheoldo Bangmulgwan-ro, Uiwang-si, Gyeonggi, 437–757, South Koreajspaik@krri.re.kr

Tae Won Park1

Department of Mechanical Engineering,  Ajou University, San 5, Woncheon-Dong, Yeongtong-Gu, Suwon-City, 443–749, South Koreapark@ajou.ac.kr

1

Corresponding author.

J. Comput. Nonlinear Dynam 7(4), 041006 (Jun 13, 2012) (13 pages) doi:10.1115/1.4006733 History: Received October 28, 2011; Revised April 02, 2012; Published June 13, 2012; Online June 13, 2012

This paper presents a model of the catenary and pantograph and an analysis of their dynamic interaction, using the finite element method. An analytical procedure to calculate the length of droppers is introduced. The calculated dropper length is applied to the catenary model and the static deformation due to gravity is simulated. The presag result of the contact wire is validated by comparison with the design specification. The wave propagation speed of the catenary model is acquired by applying the impact force to the contact wire. The result, regarding the wave propagation speed, agrees well with the reference speed as defined by the UIC code. On the contrary, the pantograph model is unified with the finite element catenary model, and the dynamic interaction of the catenary-pantograph is simulated. An optimization technique to find the material properties of the pantograph model is proposed. Based on the following performance test data, the optimum values of the material properties are found by using the response surface analysis method. The reliability of the pantograph-catenary model is verified by comparing the contact force results obtained from the simulation and test. When the pantograph drives at 305 km/h, 370 km/h, and 430 km/h, the contact force variation and the possibility of loss of contact are discussed.

Copyright © 2012 by American Society of Mechanical Engineers
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Figures

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Figure 1

Presag of a simply supported cable

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Figure 2

Load distribution over a cable supported by droppers

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Figure 3

Geometry of a single span of a catenary with n droppers

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Figure 4

Load distribution over a messenger wire

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Figure 5

Load distribution over the messenger wire according to droppers

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Figure 6

Geometry of a catenary

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Figure 7

Finite element model of a catenary

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Figure 8

Results of the finite element analysis regarding the presag of a catenary

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Figure 9

Finite element model of ten spans of the catenary to obtain the wave propagation speed

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Figure 10

Displacement variation of P1, P2, and P3 due to the impact force

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Figure 11

Configuration of the following performance test

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Figure 12

Three DOF model of a pantograph

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Figure 13

Comparison of the receptance results of the simulation and experiment after optimization

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Figure 14

Three DOF model for the following performance simulation

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Figure 15

Comparisons of the following performance test and simulation results: (a) response at 0.5 Hz: 40 mm, (b) response at 6.5 Hz: 2 mm, (c) response at 9.5 Hz: 0.5 mm, and (d) response at 10 Hz: 0.9 mm

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Figure 19

Contact force results from the simulation model at V = 370 km/h and 430 km/h: (a) contact force variation at V = 370 km/h, and (b) contact force variation at V = 430 km/h

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Figure 18

Simulation and test results at V = 305 km/h: (a) simulation result at V = 305 km/h, (b) test data at V = 305 km/h, and (c) vertical displacements of the contact wire at the 4th, 5th, and 6th registration arms

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Figure 17

Configurations of the simulation model according to the steps in the analysis: (a) STEP 1, (b) STEP 2, (c) STEP 3, and (d) STEP 4

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Figure 16

Simulation model of the catenary-pantograph

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