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Plastic spin and evolution of an anisotropic yield condition

✍ Scribed by H.P. Truong Qui; H. Lippmann

Publisher
Elsevier Science
Year
2001
Tongue
English
Weight
270 KB
Volume
43
Category
Article
ISSN
0020-7403

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✦ Synopsis

Isotropic and anisotropic hardening will be combined with plastic spin in order to describe the microstructural behaviour of a polycrystalline metal in terms of continuum mechanics. In the present paper emphasis is given to the experimental procedure, based on previous work by Boehler and Koss and applied in order to verify that approach. Experimental results for aluminium sheets at small strain i.e., in the regime of elastic-plastic transition are described and compared with theoretical predictions. The agreement is fair to good although it will be seen that the generalised, linear Prager hardening rule does not ΓΏt the experimental data. In particular it is found that the plastic spin, understood as the di erence between the classical local rotation, induced by the displacement ΓΏeld, and the local rotation of the granular lattice may di er considerably from zero.

πŸ“œ SIMILAR VOLUMES

The limit equilibrium of an anisotropic
The limit equilibrium of an anisotropic medium under the general plasticity condition
✍ I.V. Shirko πŸ“‚ Article πŸ“… 2006 πŸ› Elsevier Science 🌐 English βš– 237 KB

A theory of the limit equilibrium of an anisotropic medium under the general plasticity condition in the plane strain state is developed. The proposed yield criterion (the limit equilibrium condition) is obtained by combining the von Mises-Hill yield criterion of an ideally plastic anisotropic mater