stress strain recorder and kind of stress

[ngeorgal]

silvia i would like to ask about stress strain recorder- it depends only on the kind of material law that has been used ?

for instance if we use a steel01 material the results in stress strain recorder will be pure tension or compression stress ??

morever what about K stiffness recorder on section level ? what is it all about

is there any way or any script to have the results for all the fibers with one command ?

thank you in advance
nikolas

[silvia]

1. the stress and strain are the stress and strain in the material, yes, they follow the material law.
2. steel01 has both tension and compression. if you see only tension, it means that that fiber only sees tension (like the tension side of a section during a pushover)
3. the K recorder at the section should give you the tangent K, not the secant. i have never used it. if it is a uniaxial section, that's the stiffness it gives, maybe moment/curvature
4. you can program for all the fibers, but i wouldn't -- way too much data...