Strength Degradation of Concrete Under Cyclic Loading

saurabhp26 · Post by **saurabhp26** » Tue Oct 20, 2009 12:13 pm

Hi,

I am trying to model a reinforced concrete fiber section which shows strength degradation with cyclic loading. For the reinforcing steel Fatigue material could be used. But is it also applicable to concrete ? Is there any other material which could model this behavior in concrete ?

Thanks a lot.

Saurabh

silvia · Post by **silvia** » Tue Oct 20, 2009 7:24 pm

i don't know of one.... you could try the Fatigue material on concrete....

saurabhp26 · Post by **saurabhp26** » Tue Oct 20, 2009 7:43 pm

Hi Silvia,

I have another question. Is it possible to record the strength degradation in concrete using LoadControl integration ?
For instance if i analyze a block of concrete with axial compression only, LoadControl analysis stops when the concrete reaches its max. compressive strength. Is it possible to continue with the analysis using LoadControl integration such that it gives me the complete stress strain profile for the concrete ?? I know this is possible with a displacement control integration, but for the model I have in opensees, I have to do it using load control only.

Thanks a lot.

silvia · Post by **silvia** » Wed Oct 21, 2009 6:01 am

i don't know, try it.