PLASTIC DEFORMATION AND FAILURE IN GRANULAR MEDIA

Pre-failure plastic deformation is modelled as a process controlled by simultaneous plane strain hardening and plane strain softening associated with no-extension directions and maximum stress obliquity planes. The equality of rates of strain hardening and softening defines failure. Principal axes of stress and strain increment may or may not coincide depending on the constraints on a deforming soil element. The model defines the orientations of thin rupture layers which may form at failure and suggests the possible form of a hardening law and yield surface. Data in agreement with the model are presented from seven different shear apparatuses and a range of plane strain model tests. The shear apparatuses include those with entirely rigid boundaries, a mixture of rigid and flexible boundaries, and entirely flexible boundaries. The full variation of the intermediate principal stress is covered.(a) /TRRL/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00168505
• Corporate Authors:

  Institution of Civil Engineers

  One Great George Street, Westminster
  London,   United Kingdom  SW1P 3AA
• Authors:
  • Arthur, JRF
  • Dunstan, T
  • Al-Ani, QAJ
  • ASSADI, A
• Publication Date: 1977-3

Language

• English

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: p. 53-74
• Serial:
  • GEOTECHNIQUE
  • Volume: 27
  • Issue Number: 1
  • Publisher: Thomas Telford Limited
  • ISSN: 0016-8505

Subject/Index Terms

• TRT Terms: Concrete hardening; Deformation; Evaluation and assessment; Failure; Granular materials; Granular soils; Hardness; Mathematical models; Pavement layers; Plastic deformation; Shear strength; Shear tests; Softening point; Soils; Strain (Mechanics); Stresses
• Uncontrolled Terms: Models; Plane (Mathematics); Plane strain
• Old TRIS Terms: Shear apparatus
• ITRD Terms: 5595: Deformation; 9020: Evaluation (assessment); 5520: Failure; 4107: Granular; 4722: Hardening; 2952: Layer; 6473: Mathematical model; 6419: Plane; 5531: Shear; 5272: Softening; 4156: Soil
• Subject Areas: Geotechnology; Highways;

Filing Info

• Accession Number: 00156463
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Report/Paper Numbers: Analytic
• Files: ITRD, TRIS
• Created Date: Oct 13 1977 12:00AM