Prediction of the Pantograph/Catenary Wear using Nonlinear Multibody System Dynamic Algorithms

[+] Author and Article Information
Siripong Daocharoenporn

King Mongkut's Institute of Tech. Bangkok, -- Select -- 10520 Thailand saoya_4@hotmail.com

Mongkol Mongkolwongrojn

College of Advanced Manufacturing Innovation King Mongkut's Institute of Technology Ladkrabang Chalongkrung Road Ladkrabang District Bangkok, -- Select -- 10520 Thailand kmmongko@gmail.com

Shubhankar Kulkarni

842 West taylor street Chicago, IL 60607 skulka22@uic.edu

Ahmed A. Shabana

Department of Mechanical Engineering 842 West Taylor Street Chicago, 60607-7022 shabana@uic.edu

1Corresponding author.

Contributed by the Tribology Division of ASME for publication in the Journal of Tribology. Manuscript received July 23, 2018; final manuscript received January 9, 2019; published online xx xx, xxxx. Assoc. Editor: Satish V. Kailas.

ASME doi:10.1115/1.4042658 History: Received July 23, 2018; Accepted January 10, 2019


In this investigation, computational multibody systems (MBS) algorithms are used to develop detailed railroad vehicle models for the prediction of the wear resulting from the pantograph/catenary dynamic interaction. The wear is predicted using MBS algorithms for different motion scenarios that include constant-speed curve negotiation, and acceleration and deceleration on a tangent (straight) track.The wear model used in this investigation accounts for the electrical and the mechanical effects. The nonlinear finite element (FE) absolute nodal coordinate formulation (ANCF), which is suitable for implementation in MBS algorithms, is used to model the flexible catenary system, thereby eliminating the need for using incremental rotation procedures and co-simulation techniques. In order to obtain efficient solutions, the overhead contact line and the messenger wire, both are modeled using the gradient deficient ANCF cable element. The pantograph/catenary elastic contact formulation employed in this study allows for separation between the pantograph pan-head and the contact wire, and accounts for the effect of friction due to the sliding between the pantograph pan-head and the catenary cable. The approach proposed in this investigation can be used to evaluate the electrical contact resistance, contribution of the arcing resulting from the pan-head/catenary separation, mechanical and electrical wear contributions, and effect of the pantograph mechanism uplift force on the wear rate. Numerical results are presented and analyzed to examine the wear rates for different motion scenarios.

Copyright © 2019 by ASME
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