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Prevent Surface Penetration 1

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Abq23

Student
Jan 26, 2023
3
When simulating a shaft-hub connection with a feather key, the feather key always penetrates the shaft and hub (see attachment).
A downward pulling force acts on the hub, which exerts a moment on the feather key.
My question would be, how can I prevent the penetration of the feather key into shaft and hub?

Info: All contact surfaces are defined as master and slave respectively and general contact I have selected as well.

Thanks in advance!

 
 https://files.engineering.com/getfile.aspx?folder=33a39bb6-f54b-4acd-827b-15712048df8b&file=Screenshot_2023-01-31_175028.png
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What is the scale of the deformed shape plot ? Maybe mesh refinement will help.
 
I'm not an FEA guy but the print out looks a bit weird. Did you start it out with nearly zero radial and circumferential clearance? Just looks like the key was allowed to move.
 
The deformation scale is at 1537. I think its a bit too high. If I change it to 100 I get a decent result (see image).
Is the result then still reasonable ? And how high or low should the deformation scale be ?

Yes, the radial and circumferential clearance is just zero. There is no space between the contact surfaces.
Thank you for the quick answers.
Screenshot_2023-01-31_235602_hsuygm.png
 
This factor is used only for visualization (exaggerated deformation makes it easier to see how the model behaves), set it to 1 to see real deformations.
 
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