Vehicle Dynamics of a High-Speed Passenger Car Due to Aerodynamics Inside Tunnels

This paper uses a model of the end car of the German high-speed InterCity Express train 2 (ICE 2) to explore the effects of vehicle dynamics and ride comfort that considers multi-body dynamics. Citing Japan’s introduction of the series 300 Shinkansen train, the authors note that ride comfort can be reduced in trains comprised of light car bodies traveling at very high speeds inside relatively narrow double-track tunnels, due to unsteady aerodynamic loads. The authors further note that unlike more traditional vehicle dynamic studies that only examine disturbances introduced through the track, theirs also applies to the car body. A previous study of unsteady aerodynamic loads, derived from large eddy simulations based on the geometry of the ICE 2 and Shinkansen 300 trains, is used in the research. Also included is a sensitivity study that uses two methods -- frequency response analysis (FRA) and time domain simulations. In comparing these methods, results show that the FRA technique is a faster and more accurate tool for predicting ride comfort involving unsteady aerodynamic loads. Moreover, where loads are applied directly to the car body, results show that the mass of the car body becomes a key factor for car body vibrations. As applied to their vehicle model, the authors predict that a mass reduction of the car body becomes most important at approximately 2 Hz.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/09544097
• Authors:
  • Diedrichs, B
  • Berg, M
  • Stichel, S
  • Krajnovic, S
• Publication Date: 2007-12

Language

• English

Media Info

• Media Type: Print
• Serial:
  • Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit
  • Volume: 221
  • Issue Number: 4
  • Publisher: Sage Publications Limited
  • ISSN: 0954-4097
  • EISSN: 2041-3017
  • Serial URL: http://pif.sagepub.com/content/current

Subject/Index Terms

• TRT Terms: Aerodynamics; Frequency response; High speed rail; Mathematical models; Oscillation; Passenger comfort; Railroad cars; Railroad tunnels; Simulation; Time domain analysis; Vehicle dynamics; Vibration
• Identifier Terms: Shinkansen
• Geographic Terms: Germany; Japan
• Subject Areas: Railroads; Vehicles and Equipment;

Filing Info

• Accession Number: 01090526
• Record Type: Publication
• Files: TRIS
• Created Date: Mar 21 2008 8:47AM