i included field output request as E for total strain, however while getting the output i'am getting the LE output only which is the "logarithmic strain".Is it because my strains are very large (its a non-linear problem) and taking the antilog we will get the desired strain?
Getting the strain output in ABAQUS?
it is because you've set "nlgeom=yes" in the step card.
read: abaqus analysis manual->outputs
There is relation between true strain and engineering strain as follows.
True strain = ln(1+engineering strain)
Hope it helps.
Emre
@Abhimanyu Kumar
thank you mr kumar but if i dont set nlgeom=yes in results i cant have a regular Time/Lp lnc and Total Time/Freq .why?
If your strains are large, the technical strain is not really a meaningful quantity. You can of course back-calculate using the formula given by Emre, but it has no physical meaning, except for a case of uniaxial tension/compression.
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