Hi all,
So I’m doing the analysis of simple span beam with nonlinear analysis, and I’m interested in the stress strain of the longitudinal reinforcement component in the beam, so I extract the information from this handle below in result viewer
- Steel Strain from this handle
I got the result of steel stress and strain (image above), that’ do not match considering the defined ssla of material, so basically, the steel stress here, If i plot to the defined ssla graph, corresponds to the ~0.33 strain, but instead we got the strain of 0.220, since I consider the tension stiffening in the my ssla that I set, it have a great changes in material stiffness.
below is the setting of my steel ssla, as it show, with 0.22 strain, the stress suppose to be less than 65MPa, but instead we get stress of 82.09MPa.
stee 2 b 500
ssla calc
ssla eps sig type=pol
-25.0000 -525.0000
-2.5000 -500.0000
0 0
0.0495 50.0711
0.2451 65.0925
2.4197 500.0000
14.5678 525.0000
I would appreciate if anyone could explain whether this is an error, or are there any explanation regarding the discrepancies in steel-strain relation.
Regards,