TERRA-MECHANICAL ENGINEERING

ATTEMPTS THAT HAVE BEEN MADE TO ESTABLISH A RATIONAL BASIS FOR THE DESIGN OF OFF-THE-ROAD VEHICLES ARE OUTLINED. THEY ARE BASED ON THE FUNDAMENTAL THEORY OF THE SHRINKAGE OF A RIGID BODY UNDER A FORCE NORMAL TO THE SURFACE OF THE SOIL. DATA ARE GRAPHICALLY REPRESENTED FOR THRUST/WEIGHT RATIOS OF VARYING FORMS OF WHEELS AND LOADS. APPLICATIONS OF THE THEORY ARE DESCRIBED IN TERMS OF STRIDING MECHANISMS, FLEXING AND THREE-DIMENSIONAL MECHANISMS, TRACKED VEHICLES, SCREW VEHICLES AND ROLLING MECHANISMS, INCLUDING FLEXIBLE WHEELS AND DEFORMABLE WHEELS. LUNAR VEHICLES THAT HAVE BEEN DEVELOPED ARE DESCRIBED. IT IS CONCLUDED THAT THE VARIATIONS IN SOIL CONSTANTS ARE THE DECISIVE FACTOR IN VEHICLE DESIGN. /RRL/

  • Supplemental Notes:
    • Report No 36, PP 201-223, 45 FIG, 22 REF
  • Corporate Authors:

    Witwatersrand University

    School of Mechanical Engineering
    Johannesburg,   South Africa 
  • Authors:
    • Firth, B W
  • Publication Date: 1967-7

Subject/Index Terms

Filing Info

  • Accession Number: 00233836
  • Record Type: Publication
  • Source Agency: Road Research Laboratory /UK
  • Files: TRIS
  • Created Date: Feb 1 1994 12:00AM