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Bond-slip mechanism and non-linear analysis of RC Beam

 
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shaiv_parikh
SEFI Member
SEFI Member


Joined: 29 Sep 2013
Posts: 2
PostPosted: Sat Jun 18, 2016 12:29 pm    Post subject: Bond-slip mechanism and non-linear analysis of RC Beam Reply with quote
Hello,

Currently I am working on non-linear analysis of RC Simply supported beam in ANSYS.

I used discrete method for modeling reinforcement but with no bond-slip condition incorporated between the reinforcement and concrete and I have kept a perfectly glued condition.

By doing this the beam which was designed for 60KN load by using IS 456 is now failing at 36KN in ANSYS.

When I read many literatures I understood that due to absence of the bond-slip model, tension stiffening is taking place and  failure at lower loads is happening but none of them explained what is significance of the bond-slip model. We also don't consider that in our design using IS 456.

Can you please explain me the significance of bond-slip model and explain me why beam is failing at lower loads due to absence of this model?

Thanks,
Shaiv
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