THE THEORY OF BASE FRICTION MODELS

The base friction principle is used widely to reproduce the effects of gravity in two dimensional physical models of excavations in rock. The body force of gravity is simulated by the drag of a belt moving along the underside of the model. This paper develops the mathematical principles upon which analogy between gravity and base friction can be examined. It is shown that the equations of motion in the realm of the model are obtainable from those of the real world by replacing any linear or angular acceleration term by corresponding linear or angular velocity term. For limiting equilibrium analysis, in which motion is incipient, the analogy is flawless. (Author/TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00207624
• Corporate Authors:

  Pergamon Press, Incorporated

  Headington Hill Hall
  Oxford OX30BW,    
• Authors:
  • Bray, J W
  • Goodman, R E
• Publication Date: 1981-12

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: p. 453-468
• Serial:
  • International Journal of Rock Mechanics and Mining Science
  • Volume: 18
  • Issue Number: 6
  • Publisher: Pergamon Press, Incorporated
  • ISSN: 0020-7624

Subject/Index Terms

• TRT Terms: Acceleration (Mechanics); Base course (Pavements); Equations; Equilibrium (Mechanics); Excavations; Failure; Friction; Gravity; Mathematical models; Motion; Rock mechanics; Rocks; Scale models; Structural models; Tunnels
• Uncontrolled Terms: Base; Models; Two dimensional
• ITRD Terms: 5520: Failure; 5452: Friction; 5419: Gravity; 6473: Mathematical model; 6205: Model (not math); 4154: Rock; 3374: Tunnel; 9083: Two dimensional
• Subject Areas: Bridges and other structures; Geotechnology; Highways; I43: Rock Mechanics;

Filing Info

• Accession Number: 00349120
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD, TRIS
• Created Date: May 28 1982 12:00AM