Journal
MULTIBODY SYSTEM DYNAMICS
Volume 19, Issue 4, Pages 365-382Publisher
SPRINGER
DOI: 10.1007/s11044-007-9085-z
Keywords
wedge friction modeling; wagon-track modeling; suspension dynamics
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There are two common types of friction wedge in the suspension system of a three-piece bogie-the constant damping wedge and the variable damping wedge. A generic wagon-track dynamics interaction model has been developed to investigate the dynamic behavior of suspension systems with these two wedge types. The model differs from usual approaches in two aspects: (1) the mass of the wedge is considered in the model and, (2) the track is modeled as a flexible element with multiple degrees of freedom modeling sleepers, ballast and subgrade. The dynamic response characteristics of the two suspension-wedge systems are simulated, compared and discussed for different wedge friction conditions and track input frequencies.
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