Effect of mass distribution on curving performance for a loaded wagon

Abstract The location of wagon gravity center for a loaded is underestimated in vehicle–track coupled system. asymmetric wheel load distribution due to loading offset significantly affects the wheel-rail contact state and seriously deteriorates curving performance conjunction with height cant deficiency. Optimizing cruising velocity, therefore, interest prevent derailment promote transport capacity railway wagons. This study aims reveal three-dimensional influencing mechanism mass on vehicle under different velocities. unloading ratio regarded as evaluation index. A simplified quasi-static model established considering essential assumptions highlight influence lateral vertical performance. For more accurate description, MBS models various locations are built then negotiate curves simulation cases. results that determined by like contour lines ‘basin’. Based conclusions analysis dynamics simulations, regression equation proposed fitting parameters calculated each case. paper demonstrates necessity optimizing according running condition offers novel strategy cargo