POSSIBILITIES AND LIMITATIONS OF FINITE ELEMENTS FOR LIMIT ANALYSIS

The ability of the 15-noded displacement based finite element to assess accurately collapse loads of soil structures is examined for high friction angles and non-associated flow rules. Solutions are presented for strip and circular footings, for the trap door problem and for the cone penetration test. The last two problems are introduced in order to demonstrate that the method can be used to generate realistic solutions for problems that cannot be solved analytically. The footing problems are treated in order to assess the accuracy and stability of the numerical scheme. The accuracy is shown to be very high, but stability problems occur when non-associated flow rules are applied. In soil mechanics, this constitutes a fundamental problem since this type of instability is of a physical nature rather than of a numerical nature. (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:
  • DE BORST, R
  • VERMEER, P A
• Publication Date: 1984-6

Media Info

• Features: Figures; References;
• Pagination: p. 199-210
• Serial:
  • GEOTECHNIQUE
  • Volume: 34
  • Issue Number: 2
  • Publisher: Thomas Telford Limited
  • ISSN: 0016-8505

Subject/Index Terms

• TRT Terms: Bearing capacity; Breaking loads; Cone penetrometers; Deformation; Failure; Finite element method; Forecasting; Foundations; Friction; Fungi; Granular materials; Loads; Mat foundations; Mathematical models; Pesticides; Soils; Stability (Mechanics); Ultimate load design
• Uncontrolled Terms: Friction angle; Increase
• Old TRIS Terms: Finite elements; Fungus proofing
• ITRD Terms: 3085: Bearing capacity; 5595: Deformation; 5520: Failure; 6490: Finite element method; 132: Forecast; 4107: Granular; 9032: Increase; 5567: Load; 6473: Mathematical model; 3397: Shallow foundation; 4156: Soil
• Subject Areas: Geotechnology; Highways;

Filing Info

• Accession Number: 00392417
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD, TRIS
• Created Date: Apr 29 1985 12:00AM