Constraints imposed

[bravejbc]

I created a structure model with truss element. Right now I want to replace one of the truss element with a damper whose force-displacement relationship has been given. Is there any proper elements for the damper? Considering OpenSees doesn't has this kind of element, my idea is imposing the damper's force-displacement relationship on the nodes, but how can I realize it?
Thanks a lot!

bravejbc DUT

[vesna]

Check if Maxwell material is going to work for you: http://opensees.berkeley.edu/wiki/index ... l_Material