Sensitivity analysis of the critical speed in railway vehicle dynamics

The authors present an approach to global sensitivity analysis aiming at the reduction of its computational cost without compromising the results. The method is based on sampling methods, cubature rules, high-dimensional model representation and total sensitivity indices. It is applied to a half car with a two-axle Cooperrider bogie, in order to study the sensitivity of the critical speed with respect to the suspension parameters. The importance of a certain suspension component is expressed by the variance in critical speed that is ascribable to it. This proves to be useful in the identification of parameters for which the accuracy of their values is critically important. The approach has a general applicability in many engineering fields and does not require the knowledge of the particular solver of the dynamical system. This analysis can be used as part of the virtual homologation procedure and to help engineers during the design phase of complex systems.

• Record URL:
  https://doi.org/10.1080/00423114.2014.898776
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00423114
• Supplemental Notes:
  • Abstract reprinted with permission of Taylor & Francis.
• Authors:
  • Bigoni, D
  • True, H
  • Engsig-Karup, A P
• Conference:
  • 23rd Symposium of the International Association of Vehicle System Dynamics
  • Location: Qingdao , China
  • Date: 2013-8-19 to 2013-8-23
• Publication Date: 2014-5

Language

• English

Media Info

• Media Type: Web
• Features: Figures; References; Tables;
• Pagination: pp 272-286
• Serial:
  • Vehicle System Dynamics
  • Volume: 52
  • Issue Number: sup1
  • Publisher: Taylor & Francis
  • ISSN: 0042-3114
  • EISSN: 1744-5159
  • Serial URL: https://www.tandfonline.com/toc/nvsd20/current

Subject/Index Terms

• TRT Terms: Car trucks (Railroads); Railroad trains; Sensitivity analysis; Speed; Vehicle design; Vehicle dynamics; Vehicle safety
• Subject Areas: Railroads; Vehicles and Equipment; I91: Vehicle Design and Safety;

Filing Info

• Accession Number: 01527904
• Record Type: Publication
• Files: TRIS
• Created Date: Jun 9 2014 1:22PM