Dear all,
I'am modeling a RC column with foundation under cyclic loading in Abaqus program as per the attached photos I have a good results but unfortunately I didn't got pinching in curve same the experimental curve.
Do any one have a solution for this problem please ?
thank you
Is slipping between steel and concrete being included in you FEM model? If not, it may be the main cause of the current shape of your hysteresis curve. Secondly, is the weakening stiffness and strength of concrete and rebar being considered in your simulation?
Dear Mr. Changjiang Shao
Thanks for replying.
I modeled the steel bars as embedded in concrete without any slipping.
How is the way please ?
I modeled concrete considering property( Density , elastic , concrete damage plasticity compression and tension)
steel bars ( Density , Elastic , Plastic )
thank you
Dear Eng. Baha,
could you send me the input file of abaqus model, concrete model you used (hognasted or sanez or ?) and experimental paper that you used. because I'm modelling now something like this may this will help you.
mail: [email protected]
Did you assign stiffness degradation? I see from your figure that the stiffness (slope) of the FEM curves do not change with loading even after many cycles of loading.
Switch the axes of your plot and please add work on compression and tension recovry parameters to get the results. Your graph is not correct in term of axes.
hello ,
i have the same problem any suggestions !!
where i don't know how to add the effect of the slipping between steel and concrete ( i just use the embedded option)
also for the compression and tension recovery parameters, i don't have an idea how to put the right value where i put wc=0.99 and wt=0.01
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