Record the stress-strain response of fibers

[ericven]

Hi
I want to get all fibers' stress-strain response of a section. Which Recorder command can I use ?
So far, I find a command: recorder Element -file ele1sec1Force.out –time -ele 1 section 1 fiber $y $z <$matID>
stressStrain
But only one fiber can be monitored with this command, it's so hard to monitor all the fibers ,espically the fiber's location are not in a row.

Expect for your reply, thank you!

[EricsonEncinaZ]

The strain in a fibre section follows the "plane sections remain plane" principle, so you can build the strain profile based on 2 strain readings for 1-axis bending or 2 strain readings for 2-axis bending (you can also use the "ele $ele section $sec deformation" flag for the recorder and get strain and curvatures). Then, since your materials are uniaxial (quite likely) you can postprocess the stress-strain curves for any (y,z) coordinate you want.