✦ LIBER ✦

A probabilistic approach to polycrystalline plasticity part II: applications

✍ Scribed by Steven J. Sackett; James M. Kelley; Peter P. Gillis

Publisher: Elsevier Science
Year: 1977
Tongue: English
Weight: 944 KB
Volume: 304
Category: Article
ISSN: 0016-0032
DOI: 10.1016/0016-0032(77)90106-5

No coin nor oath required. For personal study only.

✦ Synopsis

Using our constitwtiue theory for polycrystalline plasticity, we

have calculated to characteristic yield conditions for several sample materials in which the dependence of the dislocation velocity on stress is given by an empirical power function. 7'he shape of the yield surfaces for these materials varies resembling that of von Mises when the stress exponent is small and that of Tresca when the exponent is large. Additional examples illustrate the ability of the proposed theory to model such phenomena as Ihe development of anisotropy' during plastic deformation, material hardening and softening, rhe occurrence of upper and lower yield points, and a Bauschinger effect.

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