Press fit seal between two BeCu cylinders, *pics*
Press fit seal between two BeCu cylinders, *pics*
(OP)
Hi All,
I have two beryllium copper parts that are to be placed together with a gap of .005 in between the OD of the inner and the ID of the outer. Approx 1200 psi of force will press on one side, expanding the inner cylinder to create a seal with the other. Check the pic for a better explanation:
http:// files.engi neering.co m/getfile. aspx?folde r=51fd3bf8 -a13c-4bd0 -affe-7eec 4098bc2e&a mp;file=se ttings.JPG
The problem is, I cannot get the inner part to expand and meet the outer unless the ID and the OD are the same (no gap). When a gap is placed between them, the inner part is compressed until it begins to expand through the outer, as if the outer cylinder does not exist. Any ideas on how to avoid this?
ht tp://files .engineeri ng.com/get file.aspx? folder=c01 b1180-0234 -4007-a23f -ce3ec832b d11&fi le=min.JPG
ht tp://files .engineeri ng.com/get file.aspx? folder=420 40ed9-0c24 -42b2-bf49 -fd5ffaf11 e5f&fi le=max.JPG
With no gap:
http: //files.en gineering. com/getfil e.aspx?fol der=7c0d6c ed-fc76-43 89-b9d9-95 fca0b301f5 &file= CYL_VM.JPG
Thanks in advance.
I have two beryllium copper parts that are to be placed together with a gap of .005 in between the OD of the inner and the ID of the outer. Approx 1200 psi of force will press on one side, expanding the inner cylinder to create a seal with the other. Check the pic for a better explanation:
http://
The problem is, I cannot get the inner part to expand and meet the outer unless the ID and the OD are the same (no gap). When a gap is placed between them, the inner part is compressed until it begins to expand through the outer, as if the outer cylinder does not exist. Any ideas on how to avoid this?
ht
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With no gap:
http:
Thanks in advance.





RE: Press fit seal between two BeCu cylinders, *pics*
Marcus
RE: Press fit seal between two BeCu cylinders, *pics*
Thank you very much for your help. I spent some time trying to find these options, and found that non-linear features are available only in the advanced version of Mechanica; we only have the basic.
I will try to make some worthwhile assumptions so that I may use the basic package to give a ballpark figure.
Thanks again,
Nick
RE: Press fit seal between two BeCu cylinders, *pics*
Insert > Connection > Interface
*Select Surface*
Type > Contact
Check "Infinite Friction" Checkbox
Click "Run a Design Study"
File > New Static
Check "Include Contacts"
Hope that helps anyone looking for help.