U.S. flag An official website of the United States government.
Official websites use .gov

A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS

A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

i

Motion Resistance of Wheeled Vehicles in Snow

File Language:
English


Details

  • Creators:
    Richmond, Paul W.
  • Corporate Contributors:
    Cold Regions Research and Engineering Laboratory (U.S.)
  • Subject/TRT Terms:
  • Resource Type:
    Research Paper
  • Geographical Coverage:
    United States
  • Corporate Publisher:
    US Army Corps of Engineers. Cold Regions Research and Engineering Laboratory (U.S.)
  • Abstract:
    This report examines several aspects of wheeled vehicle motion resistance using results obtained with the CRREL instrumented vehicle. Resistances of leading and trailing tires are examined. Limited data are presented for undercarriage drag, and third and fourth wheel passes in the same rut are initially analyzed, as is how snow deforms around a wheel. For the CRREL instrumented vehicle, a trailing tire has a resistance coefficient of about 0.017 for snow depths less than about 22 cm. For deeper snow, the disruption of the snowpack caused by a preceding wheel causes snow to fall into the rut, resulting in higher trailing tire coefficients. For larger vehicles, which in some cases have trailing tires carrying larger loads than preceding tires, the trailing tire coefficients are on the order of 0.048 and 0.025 for second and third trailing wheels respectively. Since there are no trailing tire data available for these larger vehicles, these values are based on nonlinear regression analysis, which includes a prediction of the leading tire resistance. The results and observations of this study are applied in a reanalysis of the towed resistance data obtained during the U.S. Army's Wheels vs. Tracks study. An improved algorithm is presented for predicting wheeled vehicle motion resistance caused by snow.
  • Format:
    PDF
  • Collection(s):
  • Main Document Checksum:
    urn:sha-512:9e8c4ab6d59e618c8ff7c07059f830bda6ee3710ba879cef88d3decc73f4ab3d023e85dc8e4824d17c50f24e6274adbda3d70e9dd3b37496e40c0e4d9aff3880
  • Download URL:
  • File Type:
    Filetype[PDF - 621.00 KB ]
PREVIOUS
File Language:
English
ON THIS PAGE
Details
ROSA P serves as an archival repository of USDOT-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by USDOT or funded partners. As a repository, ROSA P retains documents in their original published format to ensure public access to scientific information.
BACK TO TOP