INFLUENCE OF SPEED OF DEFORMATION ON STRENGTH PROPERTIES IN THE POST LOWER YIELD STRESS-STRAIN CURVE OF MILD STEEL

The essence of the correlation procedure attempted here is to associate the average strain-rate sensitivity in plastic flow with the growth speed of the individual plastic zone. Flow is considered to be accomplished by a continuing series of yield initiations in the elastic stress field of such a zone. The non-linear relationship between upper yield stress and stress rate suggests that rate sensitivity will increase directly with zone velocity or inversely with the density of operative zones. Zone density is thought to vary as a function of both strain and strain rate. The influence of the speed of lower yield strain on the distribution of operative slip bands accounts for observed deviations from an equation of state.

  • Corporate Authors:

    Naval Research Laboratory

    4555 Overlook Avenue, SW
    Washington, DC  USA  20375-5320

    Ship Structure Committee

    National Academy of Science, 2101 Constitution Avenue, NW
    Washington, DC  USA  20418
  • Authors:
    • Krafft, J M
    • Sullivan, A M
  • Publication Date: 1960-12-9

Media Info

  • Features: References;
  • Pagination: 19 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00331915
  • Record Type: Publication
  • Source Agency: Ship Structure Committee
  • Report/Paper Numbers: SSC-127 Prog Rpt.
  • Contract Numbers: NObs-72046
  • Files: TRIS
  • Created Date: May 21 1981 12:00AM