Slip parameters for Multi_lin and Smooth

[nuttaphon.B]

Hi, I try to model my beam-column hysteresis that have significant pinching. When I use Multi_lin, I use 0.05 for Slip parameter(HS). It's look nice but I found that I want to adjust an unloading shape of my hysteresis. Now I'm try to adjusting the parameter in 'smooth' instead f Multi_lin.

The question is How can I calculate the slip parameter in 'smooth' that have 2 parameters as Slip length(HSR) and Slip sharpness(HSS) to generate hysteresis that look like slip parameter 0.05 in Multi_lin.

Many thanks for your help.

[seismosoft]

You probably need to refer to the original publications, where the curves are described in detail.
One other alternative is to carry out trial analyses with a simple SDOF oscillator, trying different values of the parameters and seeing how the curves are affected.
Seismosoft Support