Seismosoft | Earthquake Engineering Solutions

If you simply want to do a response spectrum analysis in SeismoStruct, you can manually define the mean spectrum desired. If you want to do a response history analysis in SeismoStruct, you need to save the matched versions of the accelerograms. You can define the 15 time history curves in the Seismo...

SeismoSpect can handle multiple records after they have been loaded. Multiple records may be loaded at once provided they have the same format and same time step. As far as I know, SeismoSignal handles a single record at a time.

It would be nice if there were easy answers to such good questions. This is not the case, in general. Rather than re-inventing the wheel, I'll provide some quotes from the excellent SeismoStruct Help System: Regarding the force-based inelastic element: "As discussed in Material Inelasticity, el...

The answer depends on what you wish to accomplish. Are you analyzing for loadings in the linear elastic range? If yes, then use the "elastic frame element". Are you doing an inelastic pushover analysis using non-sub-divided elements between nodes? If yes, then the "inelastic force-bas...

You may need to develop your own spreadsheet calculations to do scaling of records not in the SeismoSelect database if you are interested in amplitude scaling (probably the preferred method in practice most of the time) , as opposed to spectral matching with wavelets in the time domain (SeismoMatch)...

If you trim off the beginning and the ending 'insignificant' portions of the record, you may still be able to use it. The trick. of course, is in determining which portions are "insignificant' at both ends. Once you have it trimmed won to an acceptable number of points, you could run some 'resp...

If I understand correctly, you wish to apply an axial load eccentric with respect to the column centroid. I suppose you could use a very rigid element (large Young's modulus, area, and moment of inertia) with length equal to the desired eccentricity. This would eliminate the need for constraints. Or...

It is not clear why you need a pinned node to have master and slave node designations. A pinned node should have the appropriate rotational degrees of freedom released and the translational degrees of freedom fixed. It may be that you are having trouble distinguishing between a constraint (which doe...

One way would be to perform an eigenvalue analysis and examine the modal mass ("a") at any mode and the corresponding percentage of total mass ("b") at that mode. Dividing "a" by ("b"/100) should produce the total mass of the structure included in the analysis...

Make certain that your bearing element is aligned with the axis you need it to be. It sounds like you have the element rotated 90 degrees from the direction it needs to be oriented, but that is just my initial thought on reading the problem. It could be something else. Worth checking though.