Seismosoft | Earthquake Engineering Solutions

Where exactly does this happen? In which code, specifically? We checked it and the spectrum changes, when the user changes the damping value.
Seismosoft Support

The wizard create a sample model that is not necessarily correct technically, for instance in steel buildings there are no steel braces (which is the main reason for the very large fundamental period). It is just a way to introduce the program quickly to new users.
Seismosoft Support

Can you be more specific? What do you mean with "the parameters (of the Friction Pendulum isolators) that can be entered in the modeling window, are derived directly from the one for elastomeric isolators"?
If you mean that the two types of isolators have the same input, this is not correct. The ...

Hello NunoRibeiro,

1) The section internal quantities, like the depth of the compression zone, are directly calculated from the element fibers, since the program knows which fibers are under tensions and under compression
2) This discrepancy is due to stress recovery, which employs the uncracked ...

1. unless you know exactly what you are doing, you should not change the automatic values of the program
2. As we explained in another question that you posted, in dynamic analysis the fixed nodes have an absolute displacement according to the applied accelerogram.
Seismosoft Support

If you run dynamic time-history analysis the absolute displacement of a fixed node is the one derived from the integration of the acceleration time-history applied to that node. What is of interest to you is the relative displacement between the other nodes and the fixed node.

Seismosoft Support

Yes, you need to get the drift time-histories for each scaling factor separately.
Seismosoft Support

If you select to loads a file that follows the PEER format, the program reads it and it automatically applies the correct scaling factor (9.81 in your case).
Seismosoft Support

This was a problem that appeared in large models with strip footings. We compiled a new release for both programs with an increased limit and your models can be loaded without problems. Apologies for the inconvenience.
Seismosoft Support

Both MIMK curves have several parameters that define the way their hysteresis works, but also the way that the strength deteriorates. From your description, and since you do not face numerical difficulties, it seems that you are introducing significant deterioration with the parameters of the model ...