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Recently, I have a question on the plasticity.As the plastic materials undergo the loading and unloading process. we can find the energy dissipation from the stress and strain relation curve. Then, my question is that the energy dissipation is generated during the loading process or unloading process?Thank you very much.

PACAM XIV - Mini-symposium on "Mechanics of Soft Active Materials" - Call for abstracts - Deadline 15 November 2013

Hi all

I am doing flow induced vibration analysis in pipe using ansys workbench. First i created fluent model and this output(solution) is couple with tranient structural  setup. FInally the pipe gets displaced becuase of fluid pressure. After that i want to calculate the modes. So it is possible to couple transient structural solution to modal setup? I have tried but i didnt know how to couple modal analysis and transiest structural analysis. Please help me regarding in this.

Waiting for yours reply

If slip is the only mechanism of
plastic deformation of a crystal and Schmid law governs the slip
activity, the overall response of an aggregate of such crystals
features the normality rule of classical plasticity, see
node/15347
for a rigorous recent proof. Any deviation from Schmid law is
referred to as a non-Schmid effect. In general, these effects may be
of two kinds: in addition to the resolved shear stress (on a slip
system), other stress components may influence slip activity or/and
the hardening of a slip system (representative examples for each kind
are described, for example, in Qin and Bassani(1992) and Spitzig

In the classical (rate-independent)
theory of metal plasticity, the plastic spin has been an issue of
research and debate for about thirty years. Judging by the content
of current publications on the topic (regarding modeling
possibilities, consequences and applications), it seems that the
concept has acquired a certain degree of acceptance, although no
rigorous justification, at theoretical level, has ever been provided.
In the attached preprint this matter is investigated starting from