SAP 2000 and OpenSees and Unloading reloading path

[arahmani]

Hello everybody,

In SAP 2000, there is an option by which the user is able to simulate hysteretic behavior of a material by just defining the backbone curve of that material (the mentioned option is Multi-Linear Kinematic Plasticity or Multi-Linear Takeda Plasticity. My question is that can we do the same by OpenSees? I have an array of deformation and an array of corresponding force; in other words, I have the backbone curve, and I want to simulate the unloading-reloading path? Is there any material in OpenSees for this purpose?

Thanks in advance,
Amin

[vesna]

There is no such generic material in OpenSees. If you want to use OpenSees you will need to find the material that may closely represent your backbone curve.