r.c. section

michela · Post by **michela** » Wed Oct 10, 2007 4:11 am

I need to define the steel material for a fiber section in r.c. How do I specify the ultimate strain?

silvia · Post by **silvia** » Wed Oct 10, 2007 7:41 am

steel02 does not have ultimate strain. you need to use hysteretic material to do that -- which i love.

michela · Post by **michela** » Thu Oct 18, 2007 6:25 am

how may I see stress in the steel and in the conc?

I write:

recorder Element -file Data/StressStrainBar.out -time -ele 1 section 1 fiber $coreY $coreZ stressStrain; # stress bar

recorder Element -file Data/StressStrainConcU.out -time -ele 1 section 1 fiber -$coverY 0 stressStrain; # stress concU

Is it correct?
Do I put the coordinate of the bar?
Where can I see an example of recorder command about stress-strein of a fiber section?

silvia · Post by **silvia** » Thu Oct 18, 2007 7:52 am

yes, it seems right.
you can also put in -mat $matTag to specify which material you want, in case there is a confusion at that coordinate.

michela · Post by **michela** » Thu Oct 18, 2007 8:26 am

Is it correct?

recorder Element -file Data/StressStrainBar.out -time -ele 1 section 1 fiber $coreY $coreZ -mat $IDreinf stressStrain; # stress bar

silvia · Post by **silvia** » Thu Oct 18, 2007 8:30 am

try it out.

michela · Post by **michela** » Thu Oct 18, 2007 8:42 am

But It isn't correct..is there an example where can I see??

silvia · Post by **silvia** » Thu Oct 18, 2007 8:45 am

i guess you don't put in the -mat:

recorder Element -file $dataDir/SSconcCSecIStory$j$endword.out -time -region $IDColStoryRegion section $secI fiber $Ycoord 0. $IDconcCore stressStrain

michela · Post by **michela** » Wed Oct 24, 2007 8:30 am

I need to study the behavior of the rc section for all the damage state.
I've done a push over analyze but when the unconfined conc failed the analyze stop. I need to study what happened in conc and stell after this moment..Is it possible?

silvia · Post by **silvia** » Wed Oct 24, 2007 10:03 am

have you used the scripts from the examples manual. they deal with adjusting when you have no convergence.

michela · Post by **michela** » Wed Oct 31, 2007 7:34 am

Why can't I define more than 10 point of integration for force-based element?
When I do it the program stop to run.
I need to define a lot of point because I want to know how long in the plasticity on the base of the column (the lengh of the plastic hinge)

silvia · Post by **silvia** » Wed Oct 31, 2007 8:17 am

then you might want to use the displacement-based element.

michela · Post by **michela** » Wed Oct 31, 2007 8:22 am

I don't undestand

michela · Post by **michela** » Wed Nov 07, 2007 7:39 am

I change my element in displacement-based element, now the model run right and the output are acceptability.
But I have the same problem I can't define more than 10 integration point on my column-element. Why??

I have a second question:
Why when the progam run on my screen appair a lot of string that I suppose reperesent the layer reinfocement? (There aren't warning)
as:
375 375 375 0.0018 0.0035 0.08
1 1
375 375 375 0.0018 0.0035 0.08
1 1
375 375 375 0.0018 0.0035 0.08
1 1
375 375 375 0.0018 0.0035 0.08
1 1
375 375 375 0.0018 0.0035 0.08
1 1
375 375 375 0.0018 0.0035 0.08
1 1
375 375 375 0.0018 0.0035 0.08
1 1
375 375 375 0.0018 0.0035 0.08
1 1
375 375 375 0.0018 0.0035 0.08
1 1
375 375 375 0.0018 0.0035 0.08
1 1
etc.

silvia · Post by **silvia** » Wed Nov 07, 2007 11:05 am

but define more than 10 elements, no?