The stability assessment is an important task in the mechanical design of railway vehicles. For a detailed model of a railway passenger coach, the hunting behavior depending on the running speed, on wheel-rail contact conditions, and on different model configurations is analyzed using two different methods: The path-following method based on a direct computation of limit cycles enables an automatic computation. However, due to the direct computation, which exploits the periodicity of the solution, this method is restricted to strictly periodic behavior. In the brute-force method, an initial disturbance limited to a certain time interval is applied to the model. This method allows the analysis of the behavior independently from the type of the solution, but requires manual intervention. The comparison of the results obtained with both methods shows a good agreement and thereby the reliability of the results and the methods.
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October 2012
Research Papers
Comparison of Methods Analyzing Bifurcation and Hunting of Complex Rail Vehicle Models
Oldrich Polach,
Oldrich Polach
Bombardier Transportation
, Zuercherstrasse 39, CH-8401 Winterthur, Switzerland
oldrich.polach@ch.transport.bombardier.comoldrich.polach@ch.transport.
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Ingo Kaiser
Ingo Kaiser
German Aerospace Center (DLR) Oberpfaffenhofen,
Ingo.Kaiser@dlr.de
Institute of Robotics and Mechatronics
, Department of System Dynamics and Control, Muenchner Strasse 20, D-82234 Wessling, Germany
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Oldrich Polach
Bombardier Transportation
, Zuercherstrasse 39, CH-8401 Winterthur, Switzerland
oldrich.polach@ch.transport.bombardier.comoldrich.polach@ch.transport.
Ingo Kaiser
German Aerospace Center (DLR) Oberpfaffenhofen,
Institute of Robotics and Mechatronics
, Department of System Dynamics and Control, Muenchner Strasse 20, D-82234 Wessling, Germany
Ingo.Kaiser@dlr.de
J. Comput. Nonlinear Dynam. Oct 2012, 7(4): 041005 (8 pages)
Published Online: June 13, 2012
Article history
Received:
October 28, 2011
Accepted:
May 4, 2012
Online:
June 13, 2012
Published:
June 13, 2012
Citation
Polach, O., and Kaiser, I. (June 13, 2012). "Comparison of Methods Analyzing Bifurcation and Hunting of Complex Rail Vehicle Models." ASME. J. Comput. Nonlinear Dynam. October 2012; 7(4): 041005. https://doi.org/10.1115/1.4006825
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