Analysis on Traction and Brake Dynamics of 20000 ton Combined Heavy Haul Train of Deferent Marshalling Mode

摘要

A method named Circular-Variable Method was used in this paper,and a three-dimensional coupling dynamics model of 20000 ton combined heavy haul train was set up.And the traction and brake dynamic performance of 20000 ton combined train which driven by two HXD locomotives was analyzed.In the calculation,three deferent locomotive marshalling modes namely the 2 + 0,1 +1 + 0 and the 1 + 0 + 1 marshalling mode and four calculation conditions as the master and the slave control locomotive synchronous traction,the slave control locomotive lag traction,the master and the slave control locomotive synchronous brake and brake with the controllable train tail device were all taken into account.The simulation results shows that on the traction and brake condition,the dynamic performance of the 1 + 1 + 0 marshalling mode is better than the other two marshalling modes,and in the 2 + 0 marshalling mode,the coupler force of vehicles in the train and the impulse of the train are both the largest,and the dynamic performance of the 1 + 0 + 1 mode is between the 1 + 1 + 0 and 2 + 0 marshalling mode.In addition,after the controllable train tail device has been installed on the train,on brake condition,the dynamic performance of the train are all better compared to the condition of with no train tail device,and the dynamic performance of the 1 + 1 + 0 mode is also the best,and the 2 + 0 mode is remain the worst.Therefore,the 1 + 1 + 0 marshalling mode with controllable train tail device will be the best marshalling mode for the 20000 ton combined heavy haul train.