steel joints panel zone modeling

If you have a script you think might be useful to others post it
here. Hopefully we will be able to get the most useful of these incorporated in the manuals.

Moderators: silvia, selimgunay, Moderators

Post Reply
seyedalirezajalali
Posts: 18
Joined: Mon Mar 09, 2009 5:03 am
Location: Amirkabir University of Technology
Contact:

steel joints panel zone modeling

Post by seyedalirezajalali »

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.
fmk
Site Admin
Posts: 5884
Joined: Fri Jun 11, 2004 2:33 pm
Location: UC Berkeley
Contact:

Post by fmk »

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
Posts: 18
Joined: Mon Mar 09, 2009 5:03 am
Location: Amirkabir University of Technology
Contact:

Post by seyedalirezajalali »

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
fmk
Site Admin
Posts: 5884
Joined: Fri Jun 11, 2004 2:33 pm
Location: UC Berkeley
Contact:

Post by fmk »

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
Posts: 18
Joined: Mon Mar 09, 2009 5:03 am
Location: Amirkabir University of Technology
Contact:

Post by seyedalirezajalali »

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.
fmk
Site Admin
Posts: 5884
Joined: Fri Jun 11, 2004 2:33 pm
Location: UC Berkeley
Contact:

Post by fmk »

i have placed a copy of his dissertation here
[url]
http://opensees.berkeley.edu/OpenSees/d ... tation.pdf
[/url]
seyedalirezajalali
Posts: 18
Joined: Mon Mar 09, 2009 5:03 am
Location: Amirkabir University of Technology
Contact:

Post by seyedalirezajalali »

thank you very much indeed.
You are very kind to me
seyedalirezajalali
Posts: 18
Joined: Mon Mar 09, 2009 5:03 am
Location: Amirkabir University of Technology
Contact:

Post by seyedalirezajalali »

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
fmk
Site Admin
Posts: 5884
Joined: Fri Jun 11, 2004 2:33 pm
Location: UC Berkeley
Contact:

Post by fmk »

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
Posts: 2
Joined: Mon Nov 21, 2011 7:37 pm
Contact:

Re: steel joints panel zone modeling

Post by Ganapoes »

thank you very much indeed.
You are very kind to me
williamthomas
Posts: 2
Joined: Sat Nov 26, 2011 5:00 am
Location: Iceland

Re: steel joints panel zone modeling

Post by williamthomas »

Can you share a link for the manual? I really would like to learn to more about so the help is appreciated.
- - Learning to Walk - -
judin
Posts: 1
Joined: Sat Jul 07, 2012 2:25 am

Re: steel joints panel zone modeling

Post by judin »

My I know the link to download? Hope you can leave it here.
tintablueprint
Posts: 1
Joined: Sat Jul 07, 2012 4:25 am

Re: steel joints panel zone modeling

Post by tintablueprint »

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