Integration points with elastic material?

Inigo · Post by **Inigo** » Wed Mar 25, 2009 10:14 am

Hi all, just a little question. Is it possible to use several integration points with an elastic material?
If it is possible, how? I can't find it in the manual. If not, why?
Thank you.

silvia · Post by **silvia** » Wed Mar 25, 2009 12:01 pm

the integration points are associated with an element, not a material.

Inigo · Post by **Inigo** » Thu Mar 26, 2009 2:10 am

Sorry, I meant an elasticBeamColumn element. Is there a possibility of using several integration points?

Post by **fmk** » Thu Mar 26, 2009 10:04 am

Inigo · Post by **Inigo** » Thu Mar 26, 2009 12:13 pm

Ok, so the only way of knowing a more approximate deformed shape of a structure would be creating intermediate nodes and elements?

silvia · Post by **silvia** » Thu Mar 26, 2009 1:04 pm

yes.
for an elastic flexural element, though, you can calculate the deformed shape.

Inigo · Post by **Inigo** » Fri Mar 27, 2009 3:34 am

Could you explain me how to do so? I have been looking up in the manual but I cannot find other than the display command. I have been using it but only straight lines appear and I would like a more accurate deformed shape.
Thank you.

silvia · Post by **silvia** » Fri Mar 27, 2009 6:15 am

this kind of thing you have to look up in structural-analysis.
you double integrate the curvature distribution which is linear based on the loading.

Inigo · Post by **Inigo** » Fri Mar 27, 2009 9:49 am

If I have understood correctly, you say that I should double integrate the differential equation to find u(x), right? What if I don't know this differential equation? Is it possible to find it somewhere or deduce it?
Thank you and sorry...

silvia · Post by **silvia** » Fri Mar 27, 2009 2:06 pm

please research this in a mechanics or statics book.