ADHESION OSCILLATIONS OF AN ELECTRIC MOTIVE POWER UNIT AT THE ADHESION LIMIT

REIBSCHWINGUNGEN EINES ELEKTRISCHEN TRIEBFAHRZEUGES AN DER HAFTWERTGRENZE

The paper discusses the slip characteristics of a heavily loaded electric locomotive as experienced after a drop of the coefficient of adhesion on one side. Using a simple wheel/coupling/motor model in order to show the physical mechanism of the self-excited oscillations, the influences due to the finite stiffness of the axle and to the inductance in the main circuit are reviewed. Finally, the behaviour of one representative axle each in the front and rear bogies is described by numerical integration under due consideration of all final control elements in the main and external field circuits. The results, particularly the torsional torques in the axles, are compared with the test results obtained by the railway administration. Alternative solutions for clarifying any inconsistencies are hinted at. The drive with rubber springs has proved to be a suitable means to maintain the torsional oscillations of the axle within safety limits.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/0373322X
• Corporate Authors:

  Siemens (Georg) Verlagsbuchhandlung

  Luetzowstrasse 105-196
  1 Berlin 30,   Germany 
• Authors:
  • Koerner, E
• Publication Date: 1977-8

Language

• German

Media Info

• Features: References;
• Pagination: p. 348-355
• Serial:
  • Glasers Annalen ZEV
  • Volume: 101
  • Issue Number: 8-9
  • Publisher: Siemens (Georg) Verlagsbuchhandlung
  • ISSN: 0373-322X

Subject/Index Terms

• TRT Terms: Adhesion; Axles; Coefficients; Electric locomotives; Fatigue (Mechanics); Torsion; Train track dynamics; Vehicle design; Wheel slip
• Old TRIS Terms: Adhesion coefficient; Axle design; Axle fatigue
• Subject Areas: Design; Railroads;

Filing Info

• Accession Number: 00172648
• Record Type: Publication
• Source Agency: British Railways
• Files: TRIS
• Created Date: Mar 29 1978 12:00AM