<![CDATA[Cervenka Consulting Forums — Why there is sudden drop at crack?]]> 2021-02-24T09:25:07Z PunBB https://forums.cervenka.cz/viewtopic.php?id=2233 <![CDATA[Re: Why there is sudden drop at crack?]]> Hi,
I sent a request to get access to your file.

]]> https://forums.cervenka.cz/profile.php?id=25545 2021-02-24T09:25:07Z https://forums.cervenka.cz/viewtopic.php?pid=4782#p4782 <![CDATA[Why there is sudden drop at crack?]]> Hi All

I am modelling concrete beams reinforced with FRP bars. I am modeling quarter of the beam due to symmetry in x and y direction.

I am loading by displacement control using Newton Raphson. I noticed that at the first cracking there is a sudden drop in load, then there is a steep increase and then a sudden increase in load.

Is there any explanation for this behavior please?
I am uploading a pic that better illustrates my question.

Thank you

https://drive.google.com/file/d/18m9eZC … sp=sharing

]]> https://forums.cervenka.cz/profile.php?id=25825 2021-02-21T19:49:28Z https://forums.cervenka.cz/viewtopic.php?pid=4777#p4777