guys i need you help again, i need to do Non-linear simulation of plate model of Beam, regarding limited tensile strength of concrete and concrete cracking.
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
This is a tough forum to ask for guidance with non-linear analysis for concrete, because it is not generally in the practitioners realm. Nonetheless, I am curious as to the context of the problem at hand. What is this beam supporting, and why have you been led to this method of analysis/design?
"It is imperative Cunth doesn't get his hands on those codes."
In concrete, "non-linear" encompasses a good deal, including:
1) geometric effects like p-delta.
2) cross section cracking.
3) non-linear axial response of both concrete and steel.
4) time effects.
Whether or not p-delta is sufficient depends on the nature of your problem and what aspects of it you're trying to capture. Like MG22 suggested, a great place to start would be why you're tackling this problem with FEM rather than conventional concrete beam design procedures.
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
Good point, KootK. The one that I think about the most often with concrete is the non-linear strain distribution through "deep" beams. A number of linear-elastic FEM-based design programs account for this by sub-dividing the member depth into sufficient elements to capture the opposite of "planes remain plane".
Trying to capture fracture mechanics in the context of FEM...that is a whole other game [that I know little about].
"It is imperative Cunth doesn't get his hands on those codes."
