DYNAMIC CHARACTERISTICS ANALYSIS AND VIBRATION PERFORMANCE TEST AND STATIC LOAD TEST OF BODY STRUCTURE FOR RAILWAY FREIGHT CAR

초록

The object of this study is to ensure the stability of freight cars using dynamic characteristics analysis, vibration performance test, static load test of body structures. We examined product cars such as flat car, bulk car, tank car though static load test and dynamic characteristics analysis related traveling stability and vibration performance. As the results of static load test for the welded structure bogie frame, we were able to verify that the whole of bogie frame had a good intensity. In the results of static load test of body structures for flat car and tank car, all structure of product cars satisfied allowable stress of materials. And we can suppose that the critical speed of bulk car and tank car was 130km/h and 120km/h, according to the results of dynamic characteristics analysis. The vibration performance test of bulk car and tank car were satisfied with allowable standards. Although flat car exceed speed a little at some speed interval, it was estimated that the cause was not cars but rail.