LRB bearings how to add damping?

[isolator]

When I build LRB bearing,I use "element elastomericBearing" this order,I want to know how to add bearing damping?Thanks!

[fmk]

if you must have damping there is a -doRayleigh option you can add. it is only an option as you would not typically want to include it.

if it is for the vertical direction, you can apply it through the material.

[isolator]

Thank you for your reply!I try to add damping by inputting a damping value behind -doRayleigh.
element elastomericBearing 241 101 113 $k5 $fy 0.154 -P 1 -T 2 -My 3 -Mz 4 -orient 0 1 0 0 0 1 -doRayleigh 0.2 #LRB damping
set Damp 0.25 #SI system damping
set a0 [expr $Damp*2.0*$w1*$w2/($w1+$w2)]
set a1 [expr $Damp*2.0/($w1+$w2)]
rayleigh $a0 $a1 0 0
Is it right?

[vesna]

this should be correct:

element elastomericBearing 241 101 113 $k5 $fy 0.154 -P 1 -T 2 -My 3 -Mz 4 -orient 0 1 0 0 0 1 -doRayleigh

[isolator]

Thank you ! I see!