Neck Propagation in Tensile Tests: A Study Using Rate-Independent, Strain Hardening Plasticity

[+] Author and Article Information
R. P. Nimmer, L. C. Miller

General Electric Company, Corporate Research and Development, Schenectady, N.Y. 12301

J. Appl. Mech 51(4), 759-765 (Dec 01, 1984) (7 pages) doi:10.1115/1.3167721 History: Received September 01, 1983; Revised February 01, 1984; Online July 21, 2009


A J2 yield criterion and time and temperature-independent flow theory of plasticity have been applied to study characteristic phenomena observed in tensile tests of some ductile polymers: namely a load drop immediately after yield and stable propagation of a neck along the entire length of the specimen. A trilinear stress-strain curve is used to quantify the effect of material model data on these physical observations.

Copyright © 1984 by ASME
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