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thank you

> vesna wrote:
> > I will contact her.
>

dear vesna,
did you contact Keri L. Ryan ( Assistant Professor ) about rotation of isolator2spring section ?
is there anything news about isolator2spring?
waiting for your reply!

vesna wrote:
> I will contact her.

thanks, vesna!
waiting for your news.

vesna wrote: > Ok, I see. Node 2 is fixed for rotation. Rotation theta is the internal > rotation of the element. > > Did you get any rotation with this recorder: > recorder Element -xml $dataDir/iso2spring_clcEle.txt -time -ele 1 section 1 > deformation > > In case you did not then there is no way ...

vesna wrote: > Try to record nodal rotation to see if you are going to get what you are looking > for. > > What would you get with this recorder: > recorder Element -xml $dataDir/iso2spring_clcEle.txt -time -ele 1 section 1 deformation; dear vesna, 1. in my first post about rotation of isolator2spri...

dear vesna, i have writen the recorder command like this: recorder Element -xml $dataDir/iso2spring_clcEle.txt -time -ele 1 deformation; this is the contents about iso2spring_clcEle.txt . the first column is time, second column is displacement of x, third is displacement of y ,fourth is rotation. an...

thanks vesna!

Dear vesna, would you please consider my question?
Thank you very much.

Dear vesna, would you please consider my question?
Thank you very much.

dear vesna, my question is to recording the rotation of isolator2spring. but there is some rule in this section, the important is it is really have the rotation--theta in the equations. follow the example in opensees: fix 1 1 1 1; fix 2 0 0 1; "it shold be constrained against rotation"----...

dear caosasa
would you plase send the pdf to me ?
zhidanlin@sina.com
thanks
and do you find the ways to calculate plastic rotation form curvature and plastic hinge length?

waiting for your reply

Dear vesna, i have construct a rubber bearing using 2D elastomeric bearing element. my purpose is 1.to simulate rebber bearing cyclic loading test with three different axial force, 2.to get the horizontal stiffness at 100% deformation. the model following: there is a axial force about 1884 kN at the...

dear vesna, thank you for your attention. my model simulates the rubber bearing using columnelement with section Aggregator which combining axial and flexural and shear behavior into one section. axial stiffness is much more bigger than the shear stiffness in the rubber bearing. so i will try the pu...

dear vesna thank you for your reply. i would ask another question follow this problem. it is : when i do the dynamic ananysis with PDelta, it will put in damping, but the $lambdaI is also negative. how can i do for this? # RAYLEIGH damping parameters, # D=$alphaM*M + $betaKcurr*Kcurrent + $betaKcomm...

dear vesna,
my element is this:
# ^Y
# |
# 2 ---
# | |
# | |
# | |
# (1) Lcol=0.164m
# | |
# | |
# | |
# =1= ---- -------->X