Press fit
Press fit
(OP)
Hello,
I am trying to find the pressure distribution at the contact surface of a press fit assembly.
How can I model the press fit?
Thanks
J
I am trying to find the pressure distribution at the contact surface of a press fit assembly.
How can I model the press fit?
Thanks
J





RE: Press fit
It is simple, but you can not perform this analysis yet in integrated mode. You must use the stand-alone version of Pro/MECHANICA.
If you are a maintenance paying customer, you can access the following document from the Technical Support Knowledge Base (www.ptc.com/appserver/cs/search/kdb.jsp):
Suggested Technique for Modeling Press-Fit Contact Analyses (www.ptc.com/cs/cs_23/howto/mst1293/mst1293.htm)
The basic technique is to model the initial interference so that the two bodies overlap and then use a contact surface for the two surfaces that will eventually be coincident. You will need a load to make an analysis valid, so if there are no other loads, use a dummy zero Global temperature load.
Best regards,
Matthew Ian Loew
"Luck is the residue of design."
Branch Rickey
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.
RE: Press fit
RE: Press fit
If you know the interference (displacement) of the press fit then you can work backwards by placing a pressure load on the female section until the interference displaecement is reached. This value of pressure can be assumed to be the press fit pressure.
RE: Press fit
i am also stuck with interference fit contact analysis. And i liked the method that you have mentioned. but can you explain me with an example. please. i am desperate to know. thanks
Sari
RE: Press fit
Best Regards,
Heckler
Sr. Mechanical Engineer
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RE: Press fit
Performing closed form calculations is always a good idea. However, it will only work for geometry that has the stresses calculated from closed form equations. I have performed several press-fit calculations on irregular geometry. Using a FEM based solution was the only way to model the problem with accuracy.
Best regards,
Matthew Ian Loew
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.