Research On Reduction Of Vibration For Rail Joint

As the continuously welded rail is applied gradually, a large number of rail joints have been eliminated. While using heavy haul railway with the heavy track structure, there still exists many rail joints in these areas such as the buffer zone of the continuously welded rail and the insulated joints, also the area of the switch. As a result, we can make use of the interaction between wheel and track stiffness to study the impact between the wheel and the track further, so that we can lighten this harmful vibration which is of great importance to us. According to the development of track dynamics also with the research methods and research production that existed ,This thesis has adopted the secondary suspension-track model in the vehicle-track coupling dynamics, using the finite element method to establish vibration equations .While in the daughter systems, the nonlinear contact theory by Hertz is used, at the same time, the systematic vibration equations are solved by the PARK method. All these answers have been checked and made agreement with the dynamics theory.On the things done above, taking the depressed joint and saddle corrugated wear as example, this thesis have mainly analyzed the dynamic effect between wheel and track in the area of the track joints in different conditions.Then full theoretical analysis about the effect of the vibration reduction on the joint part has been put forward, what's more,the most effective way to reduce the vehicle dynamic force theoretically and easily and cheaply used in the job site is found Besides, the effect of the track parameter and also the influence of the speed to the vehicle foree have been analyzed, which gives theoretical norm for the job site to choose the plan to reduce the vibration on the joint part.