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http://dx.doi.org/10.7782/JKSR.2015.18.4.363

Dynamic Interaction Analysis of Train-bridge Considering Rail-wheel Contact Mechanism  

Min, Dong-Ju (Dept. of Civil and Environmental Engineering, Sungkyunkwan University)
Kwark, Jong-Won (SOC Research Institute, Structural Engineering Research Division, Korea Institute of Construction Technology)
Kim, Moon-Young (Dept. of Civil and Environmental Engineering, Sungkyunkwan University)
Publication Information
Journal of the Korean Society for Railway / v.18, no.4, 2015 , pp. 363-373 More about this Journal
Abstract
The purpose of this study is to develop a nonlinear algorithm for the dynamic interaction analysis of KTX trains and bridge girders with consideration of separation and flange contact phenomena between wheel and rail. For this, three interaction models between wheel-rail are implemented and compared through numerical examples. That is, the spring model and the non-jump model are briefly explained, and a nonlinear contact model is then proposed to accurately simulate interaction forces of the train-bridge system. Dynamic interaction analysis of a simply supported girder and trains is performed and the analyzed results are presented and compared for the proposed contact model and the other model types. Particularly, flange contact phenomena in the nonlinear contact model are demonstrated under a specific condition.
Keywords
Dynamic interaction analysis; Contact mechanism; Interaction force; Flange contact;
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