ANALYSIS OF A BOGIE-SUSPENSION SYSTEM IN INDIAN TRAINS

Abstract

The improved technology will eventually reach its limit in passive suspension technology. Thereibre. we need to find some alternative solutions such as active suspension and semi-active suspension technology in railway vehicles. Since it offers better possibilities of improving the vehicle's dynamic performance compared to the passive suspension solution, it can be considered as an alternative solution for this issue. Suspension system technology can be divided into two categories in rail vehicles: one is to improve running stability and wheelset guidance (controlled through the primary suspension), and the second is to improve passenger ride comfort (controlled through the secondary suspension). As the speed of the vehicle increases, input forces to the system also increases. Since passive suspension is not enough to minimize that force and deterioration of the components are very fast. i'here is a lot of scope in India to improve this semi-active technology to increase ride quality and ride stability as lots of projects are going on to increase comfort and speed of the train. The semi active suspension system could be the solution one solution for it. In this research. the II d.o.f, model of a railway vehicle has been considered. This model is developed in Simulink to find the kinematic behavior of various parts of a railway vehicle. First, we had taken passive secondary suspension system and analyze the results and then we placed MR damper in place of secondary passive dampers. On comparing, the results show that the semi active suspension system gives better ride quality than the passive suspension system.