Seismosoft | Earthquake Engineering Solutions

The algorithm employs the sum of squares error.
For more information, please refer to:
https://help.seismosoft.com/seismoselec ... ection.htm

Seismosoft Support

Dimitris hi,

As we have already explained, given that we have thousands of academic users, we really do not have the resources to work in detail on the models of our users, especially with complicated issues as is the modelling of specimens tested on the lab.

You can find in the User’s Manual a ...

Hello abdsahin,

Thank you for the detailed description of the problem. We have already checked it and indeed there is a problem in the calculations.
We will fix it asap, and the bug will be fixed in SeismoBuild v2025 Release-2 that is due to be published later this week.
Seismosoft Support

Hello Tim,

Maybe this behavior is due to the selected solver. From your description, it seems that in your model you have several cantilevers that are not connected to each other. This types of models are not supported by the more efficient Sparse/Profile solver and require the slower Skyline ...

Dimitris hi,

Unfortunately, we do not have the resources to work in detail on your model and duplicate the data from the paper.
Some comments and some tips you could work on:
1) The time step of 0.001 seems extremely small. Carry out a sensitivity analysis and see if it is really needed. You could ...

You can refer to Crissafulli's thesis (where our infill model is based) for more details on the modelling details.
Seismosoft Support

If the masonry is encased inside a RC frame, then the appropriate element type to use if the infill element.
Seismosoft Support

In SeismoStruct the there are two different models for infill panels and lead bearing masonry members. The difference between the two is that:
1) infills (infill elements in SeismoStruct) are parts of RC buildings and do not carry gravity loads (apart from their self weight) as they are constructed ...

The other thing that I can think of is that you might be using very loose convergence criteria. Can you please load the default program settings and see if the analysis runs? Alternatively, you could send your model to support@seismosoft.com
Seismosoft Support

Hello Dimitris,

Indeed there was a problem in our 3D modeler, when two braces crossed each other. We have fixed this problem in v2025 Release-1 build-50, which is currently available at our web site. Thanks for noticing this problem.

Seismosoft Support