Wrong Results using MIMK

[paysheen]

Hi I have Tried the SDOF system with 2 node at the same place and connecting them via MIMK bilin with one node restraint. The Cyclic load is imposed to the free node but the results are showing descrepency. I have tried the same structure using Opensees and those results are completely different

[seismosoft]

Obviously, the fact that you are getting different results with Opensees does not provide enough information.
The MIMK curve are checked rather well in SeismoStruct by a large number of users, hence we doubt if there is a problem with the curves.
Can it be that you are using different input parameters?
You could start with a simple model, gradually increasing the complexity and checking the results against Opensees.
Seismosoft Support

[paysheen]

Actually the simplest model that can be used is made (2 node and one link under a simple cylcic loading)
I can provide you with my seismostruct file in case of necessity.

[seismosoft]

We meant a model with simple input parameters for the MIMK curve. Then you could gradually increase the complexity in both model and see what gives the differences.
Seismosoft Support