DYNAMIC ROAD LOAD MEASUREMENT ON A TWO-AXLE SEMI-TRAILER

The fluctuations in the vertical forces applied to the road surface by the wheels of a vehicle have been measured for a two-axle semi-trailer fitted with a mono-leaf spring suspension. Measurements were made on a variety of pavements, at different static wheel loads and speeds, with and without axle dampers, and with different tyre types. The dynamic component of the load applied to the road surface was not small: the road loads had standard deviations of approximately 5-20 per cent of the static loads. This variation was mainly caused by the semi-trailer bouncing at about 3 hz, with loads at all four wheels varying in phase. It was found that the standard deviation of the road load applied by each wheel increased almost linearly with the road profile roughness, that it increased with tyre stiffness and that it was unaffected by the addition of axle dampers. (a)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/02665247
• Corporate Authors:

  Transport and Road Research Laboratory (TRRL)

  Wokingham, Berkshire  United Kingdom 
• Authors:
  • Mace, DGW
  • Stephenson, C A
• Publication Date: 1989

Language

• English

Media Info

• Pagination: 11 p.
• Serial:
  • TRRL RESEARCH REPORT
  • Issue Number: RR17
  • Publisher: Transport and Road Research Laboratory (TRRL)
  • ISSN: 0266-5247

Subject/Index Terms

• TRT Terms: Axles; Dampers; Dynamics; Force; Loads; Pavements; Smoothness; Speed; Tires; Tractor trailer combinations; Trailers; Wheels
• Uncontrolled Terms: Two; Vertical
• ITRD Terms: 1322: Axle; 5473: Dynamics; 3071: Evenness; 5421: Force; 5567: Load; 2955: Pavement; 5408: Speed; 1329: Suspension (veh); 1203: Trailer; 9082: Two; 1381: Tyre; 9087: Vertical; 1372: Wheel
• Subject Areas: Motor Carriers; Pavements; Vehicles and Equipment;

Filing Info

• Accession Number: 00487328
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Report/Paper Numbers: 1
• Files: ITRD, TRIS
• Created Date: Sep 30 1989 12:00AM