ON THE THERMODYNAMIC STATES OF PLASTICALLY DEFORMED SOLIDS

An argument is presented that the existing difficulties in the thermodynamics of plasticity lie in the overemphasis placed on macro-plastic strains and a particular history associated with it. It is proposed that any plastically deformed states can be adequately represented by an adjacent elastic state constrained with stationary dislocations. Some elementary, but critical, results are obtained including (1) the resolution of Drucker's dilemma concerning the temperature dependence of yield stress and (2) a proof of the path independence of adiabatic deformations in the small. Also a conjecture is offered that the "chemical potential" may be assigned so as to deal with elastic-plastic transitions.

• Corporate Authors:

  North Carolina State University, Raleigh

  Raleigh, NC  United States  27695
• Authors:
  • Horie, Y
• Publication Date: 1971-12

Media Info

• Features: References;
• Pagination: 23 p.

Subject/Index Terms

• TRT Terms: Plastic deformation; Structural analysis; Thermodynamics; Thermoelasticity
• Subject Areas: Marine Transportation; Materials;

Filing Info

• Accession Number: 00024809
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: 71-5 Tech Rpt
• Contract Numbers: N00014-68-A-0187
• Files: TRIS
• Created Date: Jan 21 1972 12:00AM