MIX-MODE ELASTIC FINITE ELEMENT FORMULATION FOR BONDED GRANULAR MATERIAL CONSIDERING ROTATION OF PARTICLES

Rotation of particles in granular material is an important mechanism, which is responsible for the distinct feature of moment transfer within granular material. A couple-stress continuum is adopted to model such effect. The paper presents a mix-mode finite element formulation for the analysis of a couple stress continuum. A modified variational formulation is proposed to render unconditional convergence. The developed finite element method is validated by comparing the computed results with closed-form solutions. In order to verify whether the couple-stress continuum is appropriate for modeling granular media, finite element results for two different boundary value problems are performed and compared with that obtained from discrete analysis. Physical meaning of internal length, a new parameter of the material, is discussed. The suitability of the couple-stress continuum for modeling granular medium is evaluated.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/07339399
• Corporate Authors:

  American Society of Civil Engineers

  1801 Alexander Bell Drive
  Reston, VA  United States  20191-4400
• Authors:
  • Chang, C S
  • Shi, Q
• Publication Date: 2005-2

Language

• English

Media Info

• Features: Appendices; Figures; References;
• Pagination: p. 120-130
• Serial:
  • Journal of Engineering Mechanics
  • Volume: 131
  • Issue Number: 2
  • Publisher: American Society of Civil Engineers
  • ISSN: 0733-9399
  • EISSN: 1943-7889
  • Serial URL: http://ascelibrary.org/journal/jenmdt

Subject/Index Terms

• TRT Terms: Bonding; Deformation; Deformation curve; Elastic analysis; Finite element method; Granular materials; Mathematical models; Numerical analysis
• Subject Areas: Geotechnology; Highways; I42: Soil Mechanics;

Filing Info

• Accession Number: 00986508
• Record Type: Publication
• Files: TRIS
• Created Date: Feb 14 2005 12:00AM