Seismic Base Isolation System

[AryanRZRD]

Would you Please Help me on Modeling "Base isolation" in opensees.
i'm searching how to model the "Laminated Rubber Bearing", "High Damped" and "low Damped" Base Isolation.

[fmk]

look at
http://opensees.berkeley.edu/wiki/index ... ng_Element

in conjunction with:
http://opensees.berkeley.edu/wiki/index ... R_Material
http://opensees.berkeley.edu/wiki/index ... B_Material

[AryanRZRD]

Dear fmk
thanks about your help.
i wanna Model The Low-damped Rubber Bearing In OpenSees.
does "KikuchiBearing Element" can be helpful ?
otherwise how can i model this type of Rubber bearing ?

[fmk]

the KikuchiModel is the only one that can possibly simulate the lead rubber bearings.

[ningxz]

dear fmk
when i use the KikuchiBearing, there exists a warning, but i do not know why. I only use the example tcl supplied by opensees at http://opensees.berkeley.edu/wiki/index ... ample.tcl)

WARNING KikuchiBearing::setUp() - element: 1
ignoring nodes and using specified local x vector to determine orientation

[AryanRZRD]

Dear Frank McKenna
did you work with Kikuchi Material for Base isolation ?
i wanna Know how has been developed this Material ?
because there is a question here and that is :
did the developer considered Damping in these Materials (KikuchiAiken LRB or KikuchiAiken HDR) or we should applied it Separately ?
Thanks.