Problem with elastomericBearing element in new version ...

[aafshari]

Hi.
We have two new parameters in " element elastomericBearing " which OpenSees Wiki didn't explain ...
($alpha2) and ($mu).
(elastomericBearing $eleTag $i $j $kInit $fy $alpha1 {{{ $alpha2 }}} {{{ $mu }}} -P $matTag -Mz $matTag <-orient $x1 $x2 $x3 $y1 $y2 $y3> <-shearDist $sDratio> <-doRayleigh> <-mass $m>)

Please explain these two parameters.
I can guess both of them. but I'm not sure .

[shenxian]

i have some reference material,if you need it ,please send the e-mail to shenxian6586@126.com, but i did not use it.

[fmk]

the documentation clearly shows in the figure how the alpha2 and mu effect the response! .. can you see the figure?

[shenxian]

$alpha: post yield stiffness ratio 屈服系数