Constraints with limits
Constraints with limits
(OP)
Hi!
I'm here with another question, and I would be very glad if someone has helped. Is there a way, how to define constraint with limits? For example, I'd like to define that this node can move only by 2 millimeters, no more.
Thanks for any reply.
I'm here with another question, and I would be very glad if someone has helped. Is there a way, how to define constraint with limits? For example, I'd like to define that this node can move only by 2 millimeters, no more.
Thanks for any reply.





RE: Constraints with limits
re-reading your question, do you want to ...
1) stop the structure deflecting after 2mm (as though the structure has contacted the ground) and then react load ? or
2) make the structure stiff enough so the point only deflects 2mm ?
1) is contact, 2) is much harder (it's a structural optimisation problem, changing the stiffness of the structure to limit displacements).
Quando Omni Flunkus Moritati
RE: Constraints with limits
RE: Constraints with limits
Quando Omni Flunkus Moritati
RE: Constraints with limits
You have two options:
• CBUSH element allows to define in the PBUSH property where you can enter a curve of load vs. deflection and run a nonlinear analysis SOL106.
• CGAP elements, where you can define a GAP distance (the two mmm) and the compression stiffness when the GAP is closed. You can run linear SOL101 analysis or nonlinear SOL106 analysis.
Best regards,
Blas.
~~~~~~~~~~~~~~~~~~~~~~
Blas Molero Hidalgo
Ingeniero Industrial
Director
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