AN INVESTIGATION OF A PLANE STRAIN CONTINUOUS PENETRATION PROBLEM

THE PAPER PRESENTS THE RESULTS OF A SERIES OF EXPERIMENTS IN WHICH BOTH ROUGH AND SMOOTH FACED, LONG, SYMMETRICAL 60 DEG. WEDGES WERE DRIVEN VERTICALLY, AT A CONSTANT RATE, INTO UNIFORM BEDS OF SAND PREPARED AT DIFFERENT POROSITIES. THE APPARATUS, INSTRUMENTATION AND SAMPLE PREPARATION ARE DESCRIBED AND THE MEASURED VALUES OF PENETRATION RESISTANCE. NORMAL AND TANGENTIAL FORCES AND STRESSES ON THE WEDGE FACE AND THE FRICTION ANGLES DEVELOPED ARE PRESENTED AND DISCUSSED IN DETAIL. CONTINUOUS PENETRATION PROBLEMS OF THIS KIND ARE UNIQUE IN THAT THE DISPLACEMENT FIELD GROWS AT A CONSTANT RATE WHILST MAINTAINING COMPLETE GEOMETRICAL SIMILARITY UNLESS INSTABILITY ARISES DUE TO STRAIN SOFTENING OF THE DEFORMING MATERIAL. THE TEST RESULTS SHOW THAT INSTABILITY DOES NOT OCCUR IN LOOSE SAND BUT DEVELOPS AS THE SAND BED POROSITY IS DECREASED, DEMONSTRATING QUITE CONCLUSIVELY THE INADEQUACY OF ANALYSES WHICH TAKEN NO ACCOUNT OF THE KINEMATIC ASPECT OF THE SYSTEM BEING INVESTIGATED. /AUTHOR/

  • Availability:
  • Authors:
    • BUTTERFIELD, R
    • Andrews, K Z
  • Publication Date: 1972-12

Media Info

  • Features: Figures; Photos; References; Tables;
  • Pagination: p. 597-617
  • Serial:
    • GEOTECHNIQUE
    • Volume: 22
    • Issue Number: 4
    • Publisher: Thomas Telford Limited
    • ISSN: 0016-8505

Subject/Index Terms

Filing Info

  • Accession Number: 00237149
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: TRIS
  • Created Date: Nov 14 1973 12:00AM