SMA Material: superelastic shape-memory alloy material model

silvia · Post by **silvia** » Mon May 19, 2008 9:00 am

The current OpenSees 2.0 release includes the SMA Material.
However, it has been set up to have a No-Compression-ONLY model -- this works okey for cables.
Upon Frank's return, this material will be updated to be a more universal model (tension and compression)
if you have any questions, please contact the material author (see command language manual).

nwiersc2 · Post by **nwiersc2** » Thu Jul 03, 2008 12:33 pm

Hi,

I was wondering if Frank has returned and had any time to work on updating the SMA model to include compression. If not, do you have an estimate on when that is going to happen?

Thanks!

Post by **fmk** » Thu Jul 03, 2008 2:15 pm

the person who wrote the material does not have acees to a compiler at the moment. we are going back and forth with changes but it is still not working as of this moment.

from tongji · Post by **from tongji** » Sun Oct 12, 2008 6:11 pm

Can SMA material be used now? and could it simulate the shape memory effect? if not, is there some method to simulate it? thank you!

silvia · Post by **silvia** » Sun Oct 12, 2008 6:15 pm

the author has asked to remove that material from the opensees library.

nwiersc2 · Post by **nwiersc2** » Thu Nov 06, 2008 3:18 pm

silvia wrote:the author has asked to remove that material from the opensees library.

Does that mean that there will be no SMA material in the next version of OpenSees?

Do you know the reason why they have asked to remove it? I ask because I would like to know if they have asked to remove it because they have discovered a bug (or something else) that would be of concern for people using the SMA material in the current version.

Thanks

fanouraki · Post by **fanouraki** » Wed May 26, 2010 8:09 am

Hello everyone. It is my understanding that OpenSEES *used* to have the capability of simulating SMAs. Could someone please explain (briefly) when the capability was introduced, what exactly it could (and could not) do and when it was removed? I come across references to Fugazza's and Taftali's work but it is unclear to me what was embedded in OpenSEES, whenever it was embedded. Thank you in advance!!

Post by **fmk** » Wed Jul 07, 2010 9:46 am

it was in the source code but it was removed because it was not working as the author wanted it to. so telling you what version it was present in is pointless as it was buggy!

amir70007 · Post by **amir70007** » Fri Sep 23, 2011 10:07 am

Hi All...
I am reseraching about shape memory alloy.
Could you please help me to find out how I can model SMA in Opensees?
Is there any command to model SMA in Opensees?
Also I want to verify my model and I need a source so I can compare my result with other studies.

Best wishes

parsa200 · Post by **parsa200** » Sun Sep 25, 2011 7:36 am

hi,
how can i design tall building with SMA material

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