How to model a self-centering material (Shape Memory Alloys)

[MOISES QA]

Hello STKO Team,

I need assistance with a 3D model. I am currently studying self-centering materials (shape memory alloys) and would like to implement a diagonal brace acting as a fuse within a reinforced concrete frame.

At present, I am using a TwoNodeLink element. Could you please advise whether this is the appropriate element for modeling this type of material, or if I should use a different one?

[STKO Team]

it's fine but you have to assign a local axes to the interaction for the inclined local x direction.
otherwise, by default, the interaction use the global axes.

2NODELINK.png (433.75 KiB) Viewed 259 times

Otherwise you can use lines (no interactions) and truss elements. In that case the local axes will automatically allign with the geometry