COMPARISON OF FRICTIONAL MATERIAL MODELS WITH RESPECT TO SHEAR BAND INITIATION

The existing elasto-plastic models of geomaterials have been developed on the basis of experiments in which uniform straining was attempted. The shear bands observed in experiments have been described directly without direct relation to the elasto-plastic models. However, shear band initiation can be considered as an instability of plastic flow; consequently the material behaviour under uniform deformation and the occurrence of a shear band can be considered as coupled phenomena. In the paper the coupling relations are elaborated and applied in the calculation of shear band initiation for a range of popular constitutive models of materials like drained clay, sand, concrete and rock. It is found that amongst the popular elasto-plastic models large variations in the predicted slope of the shear band and the predicted instant of initiation occur. (Author/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:
  • MOLENKAMP, F
• Publication Date: 1985-6

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 127-143
• Serial:
  • GEOTECHNIQUE
  • Volume: 35
  • Issue Number: 2
  • Publisher: Thomas Telford Limited
  • ISSN: 0016-8505

Subject/Index Terms

• TRT Terms: Alternatives analysis; Clay; Concrete; Deformation; Drained soil; Elastoplasticity; Failure; Friction; Mathematical models; Plasticity; Rocks; Sand; Scale models; Shear strength; Strain (Mechanics); Structural models
• Uncontrolled Terms: Elastic plastic analysis; Models
• Old TRIS Terms: Frictional properties; Strains
• ITRD Terms: 4177: Clay; 4755: Concrete; 5595: Deformation; 5781: Drained soil; 5520: Failure; 6473: Mathematical model; 6205: Model (not math); 5922: Plasticity; 4154: Rock; 4105: Sand; 5531: Shear
• Subject Areas: Bridges and other structures; Geotechnology; Highways; Materials; Planning and Forecasting; I32: Concrete; I43: Rock Mechanics; I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 00451047
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD, TRIS
• Created Date: Aug 27 2004 9:57PM