Container carrying wagons have in the past been designed with bogies based on designs developed for bulk freight wagons. The Y25 bogie is one of the most commonly used freight bogies; this bogie has a primary vertical suspension with nested ‘tare’ and ‘laden’ springs and friction damping proportional to the load carried by the ‘tare’ spring. These bogies work well for tare and fully laden, but for container wagons which can carry intermediate loads the damping can be less than optimal. This can be a problem when these vehicle travel over track containing cyclic top defects. The solution is to slightly increase the damping for intermediate loads by changing the ‘tare’ spring to a variable rate spring. Simulations carried out in this study show that the proposed arrangement would give good dynamic performance for an example 40-foot (13m) wagon, when travelling over cyclic top considering the whole loading range.
|Title of host publication||Proceedings of 2nd International Conference on Rail Transportation ICRT 2021|
|Number of pages||10|
|Publication status||Accepted/In press - 15 Jan 2021|
|Event||The Second International Conference on Rail Transportation - Southwest Jiaotong University, Chengdu, China|
Duration: 5 Jul 2021 → 6 Jul 2021
|Conference||The Second International Conference on Rail Transportation|
|Period||5/07/21 → 6/07/21|