engleski

Methodology for Determining of Train Curving Resistances With Respect to Vehicle Mass and Speed

A methodology for determining curving resistances of track vehicles is proposed. The methodology is aimed to gain insight into influence of the arrangement of masses along the train and the train speed on the curving resistance based on test results conducted by using a scaled down train. The utilized scaled down train is a HO scale line freight train in ratio of 1:87 consisting of a EMD SD 35 locomotive and FALNS 121 freight wagons. The considered variants of the train arrangements are as follows: empty train (PPPPPP), one loaded wagon in the front/in the end (TPPPPP and PPPPPT) and two loaded wagons in the front/in the end (TTPPPP and PPPPTT). The total train curving resistance WR is determined based on the decrease of the train steady-state curving speed vR when compared to the train steady-state speed on the straight track v under same operating conditions. The curving resistance of a train of arbitrary arrangement is calculated as the difference between the train driving force when driving on a straight, horizontal track FV (constant resistance WS) and the total resistance when curving WU (driving force FV in curve). The constant resistances of the locomotive and empty and loaded wagons are determined by application of the gravitational method.

speed; gravitational method; mass; curving resistance; constant resistance

nije evidentirano