Hi there,

I will step in on this one hoping I can help a bit.

From your plot I would say strains will not be uniform, which might happen in an engineering sense only at a certain distance form the clamped edge (I am assuming form your sketch the edge is constrained both vertically and horizontally).

As a result you have to make a decision of which node to plot the strain vs. time for.

As far as the decision on which strain to plot, you could plot total elastic strain or creep strain only if you want (I use ANSYS, I am sure you could obtain the same in ABAQUS).

I assume you are obtaining large deformations, otherwise logarithmic and linear strain would be the same. I am not sure about the choice of plastic strain, which could deceive the result interpretation as, depending on what part of the specime you are interested in, plastic and creep strain could have well different meanings.

Hope this might help, my apologies if I missed anything for your description.

Thanks

Muzialis