I modeled a SFRC coupling beam in the Abaqus using CDP and the response for lateral load-displacement is achieved as in the attached picture. Is this response acceptable? (The f'c of the model is 56 MPa)
The main problem is that I can't get the pinching on this graph. How is it possible to have the pinching on the Abaqus output?
Dear Ali Shoari
As far as I know, pinching cannot be addressed in software such as Abaqus unless you use programming along with the Abaqus.
However, software like sap2000 and opensees can help you way better than Abaqus in this regard.
Dear Ali,
Abaqus software is weak in cyclic modeling for concrete materials. Control materials and step.
Dear Mehran Shahpari
Thanks for your response, This model contains steel fibers, is it possible to model fiber reinforced concrete in Sap or Opensees?
Also, How do you evaluate the model response? Neglecting the pinching, can we accept it as an approximate match with the experimental model?
Dear Salar Rasti
Thanks for your response. Which software do you recommend to model SFRC in it?
Thank you Salar Rasti. It could be helpful if you provide some references for modeling these kinds of problems in Ls Dyna or Perform 3D.
Dear Ali,
1- pinching can not be modeled with Abaqus by using available concrete material models unless you write an UMAT subroutine for cyclic behavior of concrete.
2- for validation in Abaqus you can compare backbone curve of simulation and experimental results.
3- Maybe Ls-Dyna is better
Dear Mahmood Moosavizadeh
Is there any reference to learn how to model RC members in LS-Dyna? I try to use Winfrith material but my model didn't run properly.
- Badges
- Science topic
- Similar topics
- Mathematical Sciences
- Graphs