I am modeling a post tension slab on abaqus and i want to define the bond between the concrete and the tendon using the method of cohesive element .. but I don't know what are the values of the stiffness coefficient "Knn" "Kss" "Ktt" I must use !! ...also what are the parameters required to define the damage after the elastic stage .
if there is any script or data for reinforced concrete i will be thankful ..
thanks in advance ..
Search literature for bond stress vs slip relationships between tendon and concrete this will help u to model the interface
Dear Mr. Ali
This articale may be helpful
http://www.civil.mrt.ac.lk/conference/ICSECM_2011/SEC-11-179.pdf
it didn't work with me since the ABAQUS is explicit and the cohesive method requires a standard version !!
If there is any one who knows how to define a connector to link the tendons to the concrete body ?? it seems easier to define the tendon as a linear element (wire) ..
Dear Ali,
These articles may be of some importance for your research.
Regards
Biruk
Article Bond of spliced GFRP reinforcement bars in alkali activated ...
Article Bond behaviour of GFRP reinforcement in alkali activated cem...
Article Bond Properties of Sand-Coated GFRP Bars with Fly Ash–Based ...
Ali Jahami .... Good question… Please check references below.. hope it will be helpful for you…
Regards…
http://faculty.washington.edu/lowes/dissertation/dissertation/dissertation.book(chapter4.pdf
https://waset.org/publications/10002767/numerical-simulation-of-the-bond-behavior-between-concrete-and-steel-reinforcing-bars-in-specialty-concrete
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