ELASTO-PLASTIC STRESS-STRAIN DISTRIBUTION DURING IN SITU SHEAR TESTS

THE METHOD OF ANG AND HARPER IS USED TO STUDY THE PLASTIC FLOW WHICH OCCURS DURING IN SITU SHEAR TESTS, UNDER PLANE STRAIN CONDITIONS. THE MATERIAL IS ASSUMED TO OBEY THE MOHR COULOMB CRITERION OF FAILURE. THE COMPUTED STRESS DISTRIBUTION SEEMS TO BE FAR FROM UNIFORM, PRINCIPALLY AT THE BEGINNING OF THE PLASTIC ZONE, BUT AT FAILURE THE SHEAR STRESSES ARE QUITE UNIFORM. A VERY GOOD AGREEMENT WAS FOUND BETWEEN THE FAILURE LINE OBTAINED IN CONVENTIONAL SHEAR TEST AND THE RESULTS PRESENTED HERE. AT THE BEGINNING OF THE PLASTIC ZONE, THE ANGLE OF FRICTION WAS ALMOST CORRECTLY DEFINED WHEN THE LOADS WERE IMPOSED LATERALLY, BUT IT WAS VERY MUCH UNDERESTIMATED IF AN INCLINED LOAD WAS APPLIED AT THE TOP OF THE BLOCK. IN BOTH CASES THE COHESION WAS UNDERESTIMATED. /RRL/

Media Info

  • Features: Figures; References;
  • Pagination: p. 183-7

Subject/Index Terms

Filing Info

  • Accession Number: 00235245
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: TRIS
  • Created Date: Apr 23 1972 12:00AM