How to get a more smoothe stress-strain curve?

[Bigtree]

Hi, in output, the stress-strain curve is not as smoothe as experimets. How can we make it more smoothe?

 

[xerf]

The ABAQUS 2D curve plot is based on a linear interpolation of a seqeuence of points.

You can:
-copy-paste the data to Excel (or a similar program) and plot the data using a higher order interpolation functions (i.e. cubic spline). Of course, you can write your own code for higher order interpolation in ABAQUS Scripting Interface, generate additional points and plot them in CAE.

-if your data have been obtained as value vs. time than you can prescribe a smaller maximum time increment to obtain more values.

 

[Bigtree]

Hi, for I have metal and composites tied together, how can I get one total stress-strain curve?