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Effects of the Design Parameters of Suspension Systems on the Bounce of Electric Trains  

Park, Ki-Soo (성균관대학교 기계공학부)
Choi, Yeon-Sun (성균관대학교 기계공학부)
Publication Information
Journal of the Korean Society for Railway / v.11, no.1, 2008 , pp. 39-44 More about this Journal
Abstract
A two degree-of-freedom model for the bogie and car body of an EMU(Electrical Multiple Unit) was implemented on the basis of the experimental data which was actually measured during the running test of an EMU. The air spring of the EMU was modeled using Nishimura's air spring model to accommodate viscoelastic characteristics. Numerical simulation for the variation of th e design parameters of the suspension system shows that reduction of the stiffness of the air spring by decreasing the internal pressure of the air tank or increasing the size of the auxiliary tank can reduce the bounce of the car body within the stability range of the suspension system.
Keywords
Nishimura's airspring; Bounce; Electrtical multiple unit; Suspension;
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