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turpy
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Homework Statement
For a crystalline metal material
- Elastic modulus E
- Poisson ratio v
- A table with test data of stresses vs. total strains, from a monotonic uniaxial tension test, which generates a stress-strain curve.
How would you use this data to find the corresponding pure shear stress-strain curve?
Homework Equations
ε_elastic = (σ/E)
γ_elastic = (τ/G)
G=E/[2*(1+v)]
The Attempt at a Solution
Using the crystal structure of metal, the normal stresses from the table could be converted to shear stresses via the τ_crss equation (http://virtualexplorer.com.au/special/meansvolume/contribs/wilson/Critical.html )
Then, the elastic shear strains can be obtained from τ/G. But what about the plastic shear strains? This is where I'm stuck. Hints/help would be highly appreciated!
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