Yielding of polycrystals in multi-axial stress states

[bill nye scienceguy!]

Can someone either give me a good explanation of this or link me to a site that can? Thanks.

 

[quantumcarl]

Can someone either give me a good explanation of this or link me to a site that can? Thanks.

This may help.

http://www.mech.northwestern.edu/fac/brinson/download/LCB_Gao_IJPpoly.pdf

 

[PerennialII]

I'm left wondering whether you're after polycrystalline models for yielding (and if so, of what "type and degree" or an overall view of the different approaches available) or mechanistic explanations?

 

[bill nye scienceguy!]

the latter, please.

 

[PerennialII]

Let's see if these are a step in the right direction.

The polycrystalline part of this lecture series:
http://www.poco.phy.cam.ac.uk/teaching/A_Donald/

This has a short intro about polycrystalline slip:
http://www.doitpoms.ac.uk/tlplib/slip/slip_in_poly.php

A pretty interesting one although focuses primarily on twinning:
http://www.mat.ensmp.fr/Personnel/Forest/publi/torino2000.pdf

General topic related stuff:
http://physics.guide.ac/276-Crystalline+Solids.html
http://people.clarkson.edu/~isuni/Chap-8.htm
http://en.wikipedia.org/wiki/Dislocation#Dislocations.2C_slip_and_plasticity
http://www.virginia.edu/bohr/mse209/chapter7.htm
http://web.Earth'sci.unimelb.edu.au/wilson/ice1/dislocation.html