The OpenSees Community

Thanks for your link but last days you sent me an example about zero length contact element. How do you calculate the " kn=1e5" and "kt=0.5e5 "in this example? Here is your example: wipe; file mkdir Data; model basic -ndm 2 -ndf 3; #nodes node 1 0 0; node 2 0 10; node 3 0 10; # S...

Hi vesna
1-What is the kt and kn in zero contact element ?are they related to sides of element?
Would you please make an example about the kt and kn?
2- what is the range of mu?

Hi vesna,
I have used zero contact element in my model that's multi stories.
It has this error:
WARNING -- NDM = 2 and NDF = 2 not compatible with beamColumn element
In one story model ,didn't have this error but when I increase the story, It has this error.
What is my problem?

I SENT MY PROBLEM TO YOUR EMAIL .
SONA

thanks.i 'll send it to your email.

3

excuse me. i didn't know how can i solve this error model basic -ndm 2 -ndf 3 for all nodes model basic -ndm 2 -ndf 2 for zero contact nodes this is " define lateral load" part ## Define LATERAL load pattern Plain 2 Linear { load 4 1.0 0.0 0.0 ; } # Set up analysis parameters constraints T...

What does this error mean?
Node: :add unable load – load to add of incorrect size 2 should be 3

so sorry.your example is 3d model.can you make an example for 2d model?

excuse me .it is not my problem.i used static analysis in my model and i didn't use ground motion.when i want to run the model it is jumped.this is my problem.would you please take look in my model?

excuse me .i tried your example in my model.but unfortunately it doesn't work. would you please check my model? wipe file mkdir sample1 model basic -ndm 2 -ndf 3; # Define node #frame # x y node 1 0.0 0.0 node 2 251.0 100.0 node 3 251.0 -100.0 node 21 251.0 100.0 node 31 251.0 -100.0 node 6 251.0 0....

sorry i didn't understand.can you explain these sentences with examples.(just the part of zerolengthcontact element)

how can i use zeroLengthContact Element?i need some information and examples about it.

hi
nowdays i am looking for some new methods about buckling resistance that i test it in my brace .can you tell some these methods ?i use opensees for modeling.

would you please tell me some suggestions or some helps or some sources to define kink and add other material to opensees?