RC wall (Solid65 and Link180)
I am trying to model RC wall panel that is subjected to eccentric monotonic loading at the top of the wall as shown in the figure. I am using Solid65 with TB.CONC. material model. I have assigned the modulus of elasticity, poisson's ratio, multilinear isotropic hardening for the stress-strain curve using Hognestad model. Link180 for steel with elastic-perfectly plastic material model. solid185 for the steel plates. The wall is acting in two way (ie; the sides are restrained).
I have no problem with convergence. However, I am not getting any way close to the experimental results. The model is stiff as compared to the experiment. I already tried to play with the lateral restrains but still no way near the experiment.
I need help overcoming the stiffness issue. Thank you in advance.