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Should I use Cylindrical Constrain ?How?

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Massoud
Posts: 23
Topic starter
(@mass)
Paid Intern
Joined: 4 years ago

Hello,

Picture below shows a disc which is rotating around its center. It will deform but for a reason, distance of the peripheral nodes (yellow nodes) from the center must be always constant. What should I do?

If using Cylindrical Constrain from SPC is solution, how should I apply it?

Thank you in Advance

 

 WhatsApp Image 2021 11 20 at 12.28.36 AM
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Negative Volume
Posts: 641
Admin
(@negativevolume)
CEO
Joined: 6 years ago

Hi @mass

I've never tried using a cylindrical constraint like you are mentioning. I'm not sure if you can apply a cylinder constraint to *Boundary_SPC, but you could probably create a local coordinate system in the center of the disc and use a standard *Boundary_SPC_set and constrain in the lateral directions. 

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Massoud
Posts: 23
Topic starter
(@mass)
Paid Intern
Joined: 4 years ago

Thank you @negativevolume

It was for one month ago. As I couldn't do that I solved the problem by a rigid part around the disk. 

But my curiosity to know how to constrain it by *Boundary_SPC still remained.

And I have already tried your way. Again it didn't work. 

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Posts: 61
(@icebreakersours)
Lab Tech
Joined: 3 years ago

@mass Check this out.

You may have to flip the sign of a particular flag in a card (i.e., sign of an entire column in the input deck; DOF=4 to DOF=-4). You can do column editing in many modern text editors with a few commands.

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