Make friction damping dampers provide adequate stiffness

In recent years, the American Standard Vehicle Bogie Company has been working to optimize the suspension parameters of friction dampers for three-piece bogies in order to provide the best lateral and vertical stability with minimal wheel and rail wear. Use any shear-resistant contact beams, cross supports, and any other attachments. The core of this method is to make the friction damping damper provide enough stiffness resistance and to optimize the lateral and vertical vibration performance of the vehicle.

In the optimization design process, it is mainly carried out by changing the parameters of the friction angle of the wedge and the stiffness of the spring. The friction angle of the wedge must first balance the generated frictional damping force with the energy generated by the vibration. The second requirement is that the static friction force should be sufficient. The requirement for resistance to stiffness is to prevent relative rotation between the bolster and the side frame.

The actual input is used in the specific analysis and calculation to generate a solution to the key dimensions of the friction wedge and the optimized wedge spring, and then the minimum required diamond friction torque and the optimized enough damping force are obtained. Through this optimization, the purpose of improving vehicle performance can be achieved. The optimized friction dampers provide high performance characteristics that were previously only possible on bogies equipped with cross bracing and radial devices.

Moving Clocks

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