Dynamic Stability and Steering Ability of Trucks for Rail Vehicles with Longitudinally Unsymmetric Structure.

This paper presents the dynamic stability and steering ability around curves of trucks for rail vehicles with longitudinally asymmetric structure. The number of truck parameters increases by asymmetric interwheelset structure. In order to promote efficiency of examination, a method has been proposed using a chart to compare the stability under the same condition of curving perfermance. By the use of this method, the compatibility of these performance has been examined for the trucks with longitudinally asymmetric structure by simple linear model. The critical speed of hunting increases by unsymmetric interwheelset structure if the attack angles of wheelsets in curving are fixed in both case of conventional wheelsets and independently rotating wheelset with the trailing axle.