Lysmer Boundary(damper)

[gholam_007]

Hi every body,
How can i define damper(Lysmer Boundary) in opensees?
which material is proper?
thanks

[fmk]

have a look at pedro Arduino's slide on how to do it:

[url]
http://opensees.berkeley.edu/OpenSees/w ... s2008.html
[/url]

page 16 in the talk titled "Geotechnical and Solids in OpenSees".