1차원 빔요소를 활용한 차축 변형고려 차륜-레일 접촉해석

초록

It is necessary to analyze the exact contact position and contact stress of the wheel-rail in order to predictdamage to the wheel and rail. This study presents a wheel-rail contact analysis model that considers thedeformation of the axle. When a wheel-rail contact analysis is performed using a full three-dimensional model ofthe wheelset and rail, the analytical model becomes very inefficient due to the increase in analysis time andcost. Therefore, modeling the element-coupling model of the wheel and rail as a three-dimensional element andthe axle as a one-dimensional element is proposed. The wheel-rail contact characteristics in the proposed analysismodel for straight and curved lines were analyzed and compared with the conventional three-dimensional analysismodel. Considering the accuracy of the analysis results and time, the result shows that the proposed analyticalmodel has almost the same accuracy as a full three-dimensional model, but the computational effort issignificantly reduced.

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