Seismosoft | Earthquake Engineering Solutions

I am hoping to analyze a large series of Cantilevers with a vertical compression (permanent load) and a lateral force (incremental load), both at the top of the cantilever.

I am using FB inelastic elements with a single element per cantilever.

A bit surprisingly, I am getting erratic behavior ...

SeismoSignal has the capability to detect pulses in a record. To my knowledge, there is no capability for adding a pulse. You can add wavelets to spectrally match a record to a target response spectrum using SeismoMatch. As a side note, you will be more likely to get multiple responses if you place ...

Based on my experience, buckling of the tube in CFT construction generally constitutes a limit state beyond which additional loading is unacceptable. You could specify "Stop" rather than "Notify" in the performance criteria if you want the analysis to cease once the tube buckles. There has been a ...

I would suggest a literature search to determine the strain at which CFT buckles locally as a function of the D/t ratio. You could then manually specify a performance criterion which notifies you that the strain has been reached.

You could assign a very small tensile stress/strain limit to the concrete. Or, you could perform a section analysis to determine the cracked moment of inertia using elastic elements. It really does depend on the type of analysis you are going to perform and the results you wish to capture.

I am not certain about the question. But if this is a performance criteria issue, it seems that the "shear capacity" notification applies when the user specifies shear capacity calculations by a selected specification. The "shear reached" notification would evidently apply when the user selected a ...

I have had good success modeling FPS isolators using the "plst" nonlinear link. It may be worth a shot. It does seem that the element you have been using is specifically for the FPS isolator though. So it would be interesting to try the "plst" link and see if it runs. Then you would perhaps be able ...

As indicated in the Help System and references, the infill element is that "developed and initially programmed by Crisafulli [1997] and implemented in SeismoStruct by Blandon [2005], to be used (almost exclusively) in association with the infill panel element".

"Response Time-Histories" performs a response history analysis for a single-degree-of-freedom oscillator subjected to the input ground motion. You may run linear or nonlinear (by specifying a desired displacement ductility) response history. So this gives the entire history of response at each time ...

As noted in the excellent Help system for SeismoSelect:

"The peak ground acceleration of the selected record component (RotD50 for both NGA databases, RotD100 or maximum horizontal component for the ESM 2.0 database)"

You can study the literature to discover how RotD50 and RotD100 are determined ...