A plastic flow theory for amorphous materials

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Starting from known kinematic picture for plasticity, we derive a set of dynamical equations describing plastic flow in a Lagrangian formulation. Our derivation is a natural and a straightforward extension of simple fluids, elastic and viscous solids theories. These equations contain the Maxwell model as a special limit. We discuss some results of plasticity which can be described by this set of equations. We exploit the model equations for the simple examples: straining of a slab and a rod. We find that necking manifests always itself (not as a result of instability), except if the very special constant-velocity stretching process is imposed.
4 pages, 1 figure

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Materials Science, Soft Condensed Matter

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http://salesiana.dossiersoluciones.com/handle/123456789/154573

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0802.1480
 http://arxiv.org/abs/0802.1480

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arXiv