Seismosoft | Earthquake Engineering Solutions

Hello,
I have a question regarding the mass matrix formulation in Seismostruct solver. Does Seismostruct use lumped mass or consistent mass matrix.

<r>I am working on the Bilinear Asymmetric link hysteresis behavior. I am using a simple beam-column joint for this study. the analysis type is static time history. While I was checking the hysteresis I found that the hysteresis is not behaving as it should according to the diagram shown in the help ...

<r>I was testing a beam column joint under various loading conditions (Static time history, pushover Analysis etc.) which has a bilinear kinematic link element at the beam-column joint. After every analysis I was getting beam deflection and moment values at the very first time step. At that time I ...

Can you tell me the application of these hysteresis models. They seem to follow quite different rule than traditional ones (e.g. Bilinear kinematic or isotropic hysteresis).

I also need it for my graduate research project. If reference is not available then can you please provide me the detail hysteresis rules for bilinear symmetric and asymmetric curves.