Vinolas J.,San Sebastian University |
Alonso A.,San Sebastian University |
Nieto J.,Centro de estudios e investigaciones tecnicas de Gipuzkoa |
Gimenez G.,and University of Navarre
Proceedings of ISMA 2010 - International Conference on Noise and Vibration Engineering, including USD 2010 | Year: 2010
In the majority of railway vehicles, lateral bumpstops are commonly used in order to prevent excessive lateral displacement of the carbody when curve negotiation. When contacting these bumpstops, there is a high enlargement of lateral stiffness and therefore an increase of vibrations transmitted from the bogie to the body. The paper presents the design of a system that allows limiting the lateral movement of the vehicle during curve negotiation without significantly increasing the lateral stiffness. The use of bumpstops would be restricted, therefore, to a mere element of safety that would act in case of malfunction of the hold off system. The paper describes the different phases of the design process starting from a preliminary step, which is the definition of requirements to be fulfilled and finalizing with the solution adopted. The system proposed is based on a pneumatic system.