PROBLEMS ON HUNTING OF RAILWAY VEHICLE ON TEST STAND.

The stand test in which a vehicle is set on a roller rig to simulate its running state is available as one of the effective means for experimental study on the hunting of vehicle. Here several questions arise: whether or not a scale model test can substitute for an actual vehicle test; whether or not a bogie with a dummy load can represent a whole car in a stand test; and whether or not a stand test produces a similar result to a field test. The present paper summarizes the results of the studies about these questions conducted at the Railway Technical Research Institute of the Japanese National Railways.