Seismosoft | Earthquake Engineering Solutions

<t>Hi everyone,<br/> <br/> I am trying to decrease of my frame elements' stiffness. But i cannot find a way to do that. I have to change my elements' stiffness for a pushover analysis. I've searched forum and some folks say that it is not possible right now.<br/> <br/> I tried to change Elasticity i...

Hi everyone,

Thx for your help. I have solved the problem and discovered that SeismoStruct and other softwares using mm units when finding modal participation factors even though we use meters units in SeismoStruct.

Thx again.

Hi lutfulla_aeam,

I had been through the same errors. If you tell us what kind of structure that you are analyzing I can, personally, give you some advices.

But you can change analysis type in settings/eigenvalue from Lanczos to Ritz transformation.

Thx.

Hello Rui,

As you said in your answer i looked them up but couldn't find any info.

Thank you.

<t>Hi Seismosoft,<br/> <br/> I searched forum for finding mode shapes in 3D Structures, I need to find or calculate but I have never tried to find mode shapes before in 3D structures. I solved lots of examples 2D frame or 1D frame by hand. In those examples I always found the mode shapes.<br/> <br/>...

<t>Hi z.gronti,<br/> <br/> Sorry for your trouble about download. I have changed the source of the file so that anyone that want to examine can access with ease. <br/> <br/> I did not searched a ratio or anything else in Ux relatively to Uy. But they seemed to me very arbitrary values.<br/> <br/> I ...

<r>Hi everyone,<br/> <br/> Thank you your answers firstly. seismosoft, I cannot be sure that two models exactly same but i am quite sure there must be some logical approximation. I don't allege that both of the package software use same formulation etc. But both software show me nearly exact mass pa...

<t>Greetings everyone.<br/> <br/> I have the same problem in SeismoStruct v7.0.2<br/> I need modal mass participation ratios so I've run a eigenvalue analysis but it consistently gives incorrect results. Beside, periods of the structure are not they should be according to the other software.<br/> <b...