steel joints panel zone modeling

seyedalirezajalali · Post by **seyedalirezajalali** » Mon Mar 09, 2009 5:25 am

Hi.
is there any element in opensees for modeling steel joints panel zone behavior?
the previously added joint element is useful for concrete joints and when I tried to use it as steel panel zone I encountered convergence problems.

Thanks a lot.

Post by **fmk** » Thu Mar 26, 2009 10:29 am

there is another undocumented joint element that can be used .. it was finished in 2004 by Arash Altoontash, the person who helped develop the documented joint .. he left stanford before he could provide documentation on the element .. it is however fully documented in his dissertation.

i have worked with someone who has used the 2D version for modeling panel zone behaviour in steel .. it works well annd gives same result as other analysis software with similar modelling capability .. for steel joint and 2d model provide 1 material to command (Joint2D-1spr model)

for a google search & download of dissertation here is dissertation title:
Simulation and Damage Model for Performance Assessment of Reinforced Concrete Beam-Column Joints.

seyedalirezajalali · Post by **seyedalirezajalali** » Sat Mar 28, 2009 7:33 am

Hello and thank you for your complete answer to my question.
i couldn't fully understand what you meant from the last paragraph. Do you mean that I can use the available concrete beamColumn element and set all materials except panel zone rigid?
i tried this and i could get good results but i think the material wastes a lot of computation time because there are 12 internal elements that are computed without purpose.
so i'm really eager to find a more efficient way.
thanks again

regards

Post by **fmk** » Mon Mar 30, 2009 12:50 pm

i suggest you download the dissertation which i described and have a look at it .. the dissertation gives the element details and input .. it is NOT the element described in the manual.

seyedalirezajalali · Post by **seyedalirezajalali** » Mon Mar 30, 2009 6:57 pm

ok, I looked up the web for the dissertation but I couldn't find it. Just a 1 page summary report of it could be find on Blume center web site. Can you help me where i can find it?
thank you.

Post by **fmk** » Fri Apr 03, 2009 3:07 pm

i have placed a copy of his dissertation here
[url]
http://opensees.berkeley.edu/OpenSees/d ... tation.pdf
[/url]

seyedalirezajalali · Post by **seyedalirezajalali** » Sat Apr 04, 2009 8:04 am

thank you very much indeed.
You are very kind to me

seyedalirezajalali · Post by **seyedalirezajalali** » Sun Apr 05, 2009 1:43 am

Hi
I am trying to use steel02 material as an element force-deformation response. the element's yield strength starts to deteriorate after a deformation of .04 . I want to use steel02 material isotropic strain hardening parameters a1, a2, a3, and a4 but the mentioned decrease starts at earlier points than I desire. can you tell me how should I set the parameters to get the deterioration start exactly at the needed point?
thank you

Post by **fmk** » Wed Jun 16, 2010 3:44 am

it would help out if you could put the command in the command manual .. it is now in wiki format and all you have to do is register and thn you can post whatever you like.

Ganapoes · Post by **Ganapoes** » Mon Nov 21, 2011 7:41 pm

thank you very much indeed.
You are very kind to me

williamthomas · Post by **williamthomas** » Sat Nov 26, 2011 5:28 am

Can you share a link for the manual? I really would like to learn to more about so the help is appreciated.

judin · Post by **judin** » Sat Jul 07, 2012 2:29 am

My I know the link to download? Hope you can leave it here.

tintablueprint · Post by **tintablueprint** » Sat Jul 07, 2012 4:29 am

a link for the manual please.. step by step needed..

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steel joints panel zone modeling

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