Jump condition for GND evolution
Acharya, A., Jump conditions for GND evolution as a constraint on slip transmission at grain boundaries, Philosophical Magazine, 87(8-9), 1349-1359, 2007 (see attachment)
Plasticity
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Hi,
In my research i am trying to develop a new model for plastic deformation, and i suspect there is a strong similarity between
plasticity and turbulent flow !.
My question is: if there is workd done trying to apply Reynolds decomposition (Reynolds Stress) to the governing equations and solved plasticity problem in Solids?
thanks,
Yaron B.S.
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Stress Relaxation
2012-07-10
I would like to seek comments on : Room temperature stress relaxation and governing mechanisms that contribute to the plasticity that occurs during this process. As, most of the available work on relaxation is done at elevated temperatures.
Please check more on this thread by hari@
node/12687
I have also attach papers by Prof Hart and Prof Krempl that did throw some light on this particular subject.
stress relaxation- doubt
Attached herewith a classical paper by Hart on introducing a concept of constant hardness curves refuting that absolute strain should not be considered as a state variable.
The interesting part is he uses a stress relaxation test to prove the same. Stress relaxation test, here refers to a tensile test, where the test is stopped after say certain amount of plastic deformation. The stress drops a little, but the total strain is constant. However, it is argued that there is a small inelastic deformation, which is the cause of this load or stress drop.