NON-LINEAR SPRINGS

The problem of ensuring satisfactory riding characteristics with vehicles operating in suburban services is particularly difficult because, as far as the bolster springs are concerned, the rush-hour load can exceed the weight of the vehicle body. Consequently, a static deflection of 4 inches under tare load will mean a static deflection of 8 inches and more under overload. General design considerations make it often necessary to deviate from the constant frequency relation, particularly when dealing with heavy overloads. To ensure a non-linear characteristic, rubber cones are used inside helical bolster springs and use is also made of suitable rubber springs sometimes incorporating helical springs vulcanised in them also to prevent undue barreling out of the hollow rubber cylinders. The use of non-linear centering devices is beneficial by reducing the degree of coupling between bogie hunting and body nosing and swaying in the range of low amplitude and frequency oscillations.

• Corporate Authors:

  Temple Press Limited

  161-166 Fleet Street
  Longon EC4,   England 
• Authors:
  • KOFFMAN, J L
• Publication Date: 1960-8-5

Media Info

• Features: Figures; References;
• Pagination: p. 164-166
• Serial:
  • RAILWAY GAZETTE
  • Volume: 113

Subject/Index Terms

• TRT Terms: Deflection; Dynamic loads; Hunting (Dynamics); Motor vehicles; Passenger cars; Railroad cars; Ride quality; Rubber; Spring; Springs (Vehicles); Stiffness; Suspensions; Technology; Trucks; Vehicle dynamics; Vibration
• Uncontrolled Terms: Lateral dynamics
• Geographic Terms: Belgium; France; United Kingdom
• Old TRIS Terms: Car vibration; Helical springs; Rubber springs; Spring deflection; Vehicle vibration
• Subject Areas: Motor Carriers; Railroads; Vehicles and Equipment;

Filing Info

• Accession Number: 00037698
• Record Type: Publication
• Files: TRIS
• Created Date: Dec 4 1994 12:00AM