Embedding will not help you to perform pull out test. to perform pull out test in abaqus you need to model the contact surface. That means you could model reinforcement as 3D Ssurface make a hole in concrete and give contact detail to inner part of hole and outer part of the reinforcement.
hi
i agree with kamal's answer if you have already the load-bond slip curve. however if you we want to obtain load-bond slip then you change to another model. you create concrete part as solid and steel bar as solid then in assemply module you use merge to merge both part. then on mesh module use very fine mesh arround steel bar. make sure to use CDP for concrete material or use your own external user subroutine for concrete. also use dynamic explicit for the analysis.
i hope my answer help you.
good luck
@kamal: Thanks for the answer. I tried to model as you told. For the contact surface which interaction will be appropriate ?
@Raafat: Thank you sir for the answer. I am modelling to get pull out capacity and bond-slip curve. In the pull out testing, I am using a metal plate attach at the end of the reinforcement bar. If I will merge the part then will I get the similar interaction property. Please suggest me. I have attached a rough sketch.
hi hopely yes you will get close results to experiment. this will depend on how your abaqus model (including material model and analysis method and mesh) is designed.
I am very happy for asking to me about my progress. I modeled and made a data check. All the data are correct. Interaction I provided according to the last paper that you have sent. At the starting I have put the rough value in material properties. Now I have to put the material properties for concrete M20 grade and steel Fe415. Now I am facing problem in Concrete Damage Plasticity Model. The data for M20 grade concrete, I am not getting in any paper.
what data of M20 grade concrete are given in the paper. you still can generate the compressive and tensile stress strain curves by using one published equation.
Important is tensile behavior and tensile damage. then the dilation angle (try 20) and viscosity parameter(try 1e-5) and mesh must be fine around the contact.
we can continue discussion if you need further help about CDP parameters
A very good discussion has been made regarding rebar pullout testing. Can someone answer me these questions, I shall be thankful:
(1) My rebars are inserted in a grout material and the grout is connected to concrete. Therefore, I have to define contact for two materials: (i) Contact between grout and concrete (ii) contact between rebar and grout. I have applied surface-to-surface contact for both the scenarios but i am experiencing some problems with the contact between grout and concrete. Any suggestions for modelling these two cases?
(2) If I follow "penalty" and "hard" contact, are there any suggested values in the literature for the Coefficient of Friction for contact b/w concrete and grout and rebar and grout? Shall I start with lower values first and then proceed with higher values?
I am re-validating a model in my case.
Best,
Iftikhar Azim
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