Experimental Mechanics

, Volume 13, Issue 10, pp 422–432

The effect of strain rate and heat developed during deformation on the stress-strain curve of plastics

Temperature rise developed during deformation can have significant effects on the stress-strain relationship. Four hard plastics are tested at various strain rates, and temperature changes are measured during deformation of the specimen
  • S. C. Chou
  • K. D. Robertson
  • J. H. Rainey
Article

DOI: 10.1007/BF02324886

Cite this article as:
Chou, S.C., Robertson, K.D. & Rainey, J.H. Experimental Mechanics (1973) 13: 422. doi:10.1007/BF02324886

Abstract

Polymethylmethacrylate, cellulose acetate butyrate, polypropylene and nylon 6–6 have been characterized in compression at various strain rates from 10−4 s−1 to 103 s−1 at room temperature. A medium strain-rate machine and a split-Hopkinson-bar apparatus are used in conducting the experiments. The temperature rise developed during deformation is also measured by using a thermocouple. All four materials tested definitely show a viscous effect at the beginning of the deformation and a plastic flow follows thereafter. Test results also indicate that the temperature rise developed during deformation cannot be neglected in determining the dynamic response of those materials investigated in this study.

Copyright information

© Society for Experimental Mechanics, Inc. 1973

Authors and Affiliations

  • S. C. Chou
    • 1
  • K. D. Robertson
    • 1
  • J. H. Rainey
    • 1
  1. 1.Army Materials and Mechanics Research CenterWaterton