I need to convert Logarithmic strain (LE) to engineering strain for 1D truss element. Can anyone help me? I read somewhere that for low strain, they both are equal, is this right?
The relation is
phi=ln(1+eps)
where phi is log and eps is engineering strain.
Hi Tilak, For strain below 1%, they are pretty quite similar.
You can ask abaqus to give you engineering strain E, rather than lograithmic strain LE. Just choose from field output. (To be able to choose LE, you need to check on the nLGEOM). Hope this helps
The relation is
phi=ln(1+eps)
where phi is log and eps is engineering strain.
Dear Pokharel,
The relationship between true and engineering stress and strain is as follows:
True strain = ln(1+engineering strain)
True stress = engineering stress * (1+engineering strain)
But in ABAQUS, stress-strain data should be entered as true stress and true plastic strain which means "true strain - yield strain".
You can refer the picture attached to know how the equation for the conversion came about.
- Badges
- Science topic