OS ability for modeling SSI compare with FLUSH

ebe79442114 · Post by **ebe79442114** » Fri Jun 06, 2008 11:11 am

My dears!
I want to study on soil-structure interaction problem with OS.
My teacher have been done this with FLUSH program.
I want to see that:
1- Can OS take 3D effects on 2D analysis to account?
2- Can OS use equivalent linear method for nonlinear analysis?

Pleas, excuse me for poor english.

bayram_aygun · Post by **bayram_aygun** » Fri Jun 06, 2008 1:38 pm

I don't know anything about FLUSH but I spent some time with soil modeling in OS. I'm not sure about the answers to your questions though. All I use is Py springs (which can be used only in 2D). (PyLiq1 material)

The thing is this: The structural part of OS is fairly well understood and popular whereas the soil part is not as ripe as the structural part. Of course, if you know how to write a code in C++ and if you know geomechanics fairly well, OS would be OK for you.

BUT if you can use some other software for your soil modeling and if you don't know much about computational geomechanics, my advise would be this : DON'T USE OS for SOIL MODELING.

Take a look at Dynaflex for example. I've heard that it was fairly good. It's expensive of course

ebe79442114 · Post by **ebe79442114** » Fri Jun 20, 2008 8:34 pm

What's the Dynaflex?
Is that a book? or sth else?

ebe79442114 · Post by **ebe79442114** » Sun Jul 13, 2008 3:49 am

Please help me,

I want to know:

how viscous boundaries are provided to simulate three-dimentional effects?

jaugalde · Post by **jaugalde** » Tue Aug 26, 2008 8:53 am

ebe79442114 wrote:Please help me,

I want to know:

how viscous boundaries are provided to simulate three-dimentional effects?

The only place I've seen results for non reflecting boundaries presented is here:
http://sokocalo.engr.ucdavis.edu/~jerem ... eNotes.pdf

in the section about Domain Reduction Method. As for how they are implemented... not sure. There are some example scripts on the site. Not sure if this is part of Prof. Jeremic's implementation of the Domain Reduction Method.

jaugalde · Post by **jaugalde** » Tue Aug 26, 2008 8:54 am

ebe79442114 wrote:Please help me,

I want to know:

how viscous boundaries are provided to simulate three-dimentional effects?

The only place I've seen results for non reflecting boundaries presented is here:
http://sokocalo.engr.ucdavis.edu/~jerem ... eNotes.pdf

in the section about Domain Reduction Method. As for how they are implemented... not sure. There are some example scripts on the site. Not sure if this is part of Prof. Jeremic's implementation of the Domain Reduction Method.

ebe79442114 · Post by **ebe79442114** » Tue Aug 26, 2008 1:03 pm

Thanks.

I saw it, but i want to know: how opensees can model wave traveling out of plan in 2D analysis?

many Thanks.