Abstract
In recent years, railway system is attracting attention in terms of energy and environment. Rail of railway is one of the most important elements in constructing railway system. Railheads are subjected to severe contact with wheels during repeated passage of vehicles. As a results of severe contact with wheels, wear of rail or rail defect have been occurred on railheads. Rail profile will be changed due to wear development. Worn profiles of rail have changed complexity in each section because the condition of wheel / rail contact has changed gradually, according to the running condition of vehicle and track geometry condition. It is very important to predict the worn profiles of rail based on the analysis of vehicle dynamics. Therefore, the prediction of worn profiles of rail by use of multibody dynamics is very useful. In this research, we constructed the predicting model of worn profiles of rail with SIMPACK. Then, we conducted the wear examinations by use of full-scaled wheel / rail rolling contact equipment. In addition, we analyzed the worn profiles of rail specimen setting in previous equipment to validate the predicting model. Finally, we evaluated the results of examination and analysis.
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