PERMISSIBLE OUT-OF-ROUNDNESS AND OUT-OF-BALANCE OF THE WHEELS OF PASSENGER COACHES

These tests are carried out with three coaches: one SNCF coach equipped with Y 28 BR bogies, one DB coach equipped with MD 50 bogies, and one FS coach equipped with V 920 (prototype) bogies. The SNCF coach was also subjected to tests on the line. The bench tests were carried out on the SNCF dynamic test rig for vehicle suspensions, at simulated running speeds ranging from 0 to 250 km.p.h. The various degrees of out-of-roundness were simulated by a vertical movement, at sinusoidal speed, of the motor-driven rollers. Bench tests have shown that out-of-roundness values higher than the limit values was confined to relatively weak vertical accelerations. For an out-of-balance value not exceeding the limit value, the three coaches show a favorable behavior with the exception of the FS coach at a speed higher than, or equal to, 200 km.p.h.

• Corporate Authors:

  International Railway Congress Association

  17-21 rue de Louvrain
  1000 Brussels,   Belgium 
• Publication Date: 1971-6

Media Info

• Features: Figures;
• Pagination: p. 561-562
• Serial:
  • RAIL INTERNATIONAL

Subject/Index Terms

• TRT Terms: Field tests; High speed rail; Passenger cars; Railroad cars; Railroad trains; Simulation; Standards; Technology
• Geographic Terms: France
• Old TRIS Terms: Wheel balance
• Subject Areas: Railroads; Vehicles and Equipment;

Filing Info

• Accession Number: 00039467
• Record Type: Publication
• Files: TRIS
• Created Date: Dec 15 1973 12:00AM