ENERGY-BASED COUPLED ELASTOPLASTIC DAMAGE MODELS AT FINITE STRAINS

In this paper, the energy-based elastoplastic damage constitutive equations are derived, including the thermodynamc basis, characterization of damage, coupling of damage and plasiticty, and an anisotropic microcrack opening/closing mechanism. Both spatial and material descriptions are discussed, and a physically meaningful 'damage energy release rate' is derived for finite strains. A multiplicative split of the deformation gradient is assumed from the outset. Simple and efficient computational integration algorithms for proposed models are presented. A 3-step operator split algorithm is developed and the plastic and damage parts are algorithmically uncoupled in spite of the damage-plasticity coupling in its rate form. A numerical experiment of a notched specimen involving damage coupled with plastic flow is given.

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

  American Society of Civil Engineers

  345 East 47th Street
  New York, NY  United States  10017-2398
• Authors:
  • Ju, J W
• Publication Date: 1989-11

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: p. 2507-25
• Serial:
  • Journal of Engineering Mechanics
  • Volume: 115
  • Issue Number: 11
  • Publisher: American Society of Civil Engineers
  • ISSN: 0733-9399
  • EISSN: 1943-7889
  • Serial URL: http://ascelibrary.org/journal/jenmdt

Subject/Index Terms

• TRT Terms: Deformation; Elastoplasticity; Equations; Loss and damage; Mathematical models; Microcracking; Strain (Mechanics)
• Uncontrolled Terms: Elastic plastic analysis; Microcracks; Models
• Old TRIS Terms: Strains
• Subject Areas: Bridges and other structures; Highways; I20: Design and Planning of Transport Infrastructure;

Filing Info

• Accession Number: 00490781
• Record Type: Publication
• Files: TRIS
• Created Date: Jan 31 1990 12:00AM