Failure Shear Strain analogous to Elongation to Failure
Failure Shear Strain analogous to Elongation to Failure
(OP)
Hi everyone who reads this...
I’m trying to justify a design which is under significant and dominant shear loading. The load-case is an “ultimate” case, such that the design is allowed to yield (so we’re in the plastic region instead of below 0.2% Yield/proof) as much as it likes as long as it doesn’t fail/rupture.
My question is whether there is a similar shear-related property to the tensile “% elongation to failure” that I could use to set a limit to my plastic shear deformation? Is there anyway to estimate such a property based on uni-axial "elongation" data? Or is there already a standard limit that I'm missing for this type of plastic deformation?
Thanks in advance,
Bob
I’m trying to justify a design which is under significant and dominant shear loading. The load-case is an “ultimate” case, such that the design is allowed to yield (so we’re in the plastic region instead of below 0.2% Yield/proof) as much as it likes as long as it doesn’t fail/rupture.
My question is whether there is a similar shear-related property to the tensile “% elongation to failure” that I could use to set a limit to my plastic shear deformation? Is there anyway to estimate such a property based on uni-axial "elongation" data? Or is there already a standard limit that I'm missing for this type of plastic deformation?
Thanks in advance,
Bob





RE: Failure Shear Strain analogous to Elongation to Failure
RE: Failure Shear Strain analogous to Elongation to Failure
RE: Failure Shear Strain analogous to Elongation to Failure
Yes, I had considered that, however I was advised that something like the UTS or Yield Strength should be compared to elastic-equivalent stress results (i.e. the stress from analysis using a constant elastic stress-strain relationship).
The analysis I'm conducting is elastic-plastic with a non-constant stress-strain relationship (Ramberg-Osgood), and I believed that in such analyses I should be using a strain-based failure criteria instead of stress-based. Or should this not really matter, as the UTS will occur at the "elongation to failure" strain?
Thanks,
Bob
RE: Failure Shear Strain analogous to Elongation to Failure
Take a look at this paper.
http://www.google.com/url?sa=t&rct=j&q=&am...
RE: Failure Shear Strain analogous to Elongation to Failure
RE: Failure Shear Strain analogous to Elongation to Failure
RE: Failure Shear Strain analogous to Elongation to Failure