Seismosoft | Earthquake Engineering Solutions

You are right. Sorry.

<t>I obtained a weird pushover curve for a 3rd mode distribution for a 3-floors steel frame. At first the displacement of the third floor goes in the right direction but suddenly, because of a soft mechanism of the first floor the displacement of the third floor start to go in the left direction. It ...

Hi, I would know if in SeismoStruct it is possible to define as acceptance criteria a chord rotation value that depends on the axial force on the same element, as recommended in FEMA 356 or ASCE/SEI 41.
Thanks!

I don't know if I can ask this here, anyway I wanted to know how to obtain a bilinear from an adaptive pushover curve (which gamma should I use?
Thanks.

<t>Hi hufftle, thanks for your help. Anyway I solved the problem, maybe. In my structural model (MRF) I assigned a diaphragm at every floor and it didn't work as I told in the previous message. So I removed the diaphragms and now it work very well, I mean that the curve that the program provides as ...

<t>I have made a non-adaptive pushover analysis on a 3-levels steel frame. The class of my elements are infrmFB and I used as material stl_mp. If I run the analysis without including the geometric nonlinear effects, the pushover curve is very widespread and the analysis continues until the end, but ...

Maybe I've solved my problem, I think that if I want to see only the modes in the x - z plane I have to tick only the X direction in the "global direction mass".Is it the better way?

<t>I've noticed that the problem that I illustrated in the first message does not occur anymore if I put the elements' mass equal to zero in "element classes" and if I put the mass only by defining the lumped masses at every node. In this way I have no problem and I can define both the rigid ...

<t>Hello to everyone, I'm a beginner on seismo_struct and I need your help for some issues. I've made an eigenvalue analysis on a simple two-dimensional frame, and among the ten vibration modes that the program shows as output, most of them makes the structure oscillating out of the x-z plane. I ...