Topic: Bond Between FRP bar and Concrete
I am using ATENA 3d and I am trying to model the bond between the FRP bars and the concrete in order to monitor the crack width of reinforced concrete beams under static loading. My question is concerned with the bond definition:
I selected define "Bond for Reinforcement" then, "user defined". I found that I have to define bond stress-slip relation.
What I need to know exactly:
1- Do I need to define bond stress-slip depending on experimental results or
2- I have to get the values of the bond stress-slip from an existing model in the literature which I shall select or
3- There are equations in ATENA where, I can calculate from it the values of the curve.
4- The "tau1 (t1)" is defined in case of cyclic loading only?