friction coefficient
friction coefficient
(OP)
Hallo, does anybody knows where to get friction coefficients for different materials used in design (PTFE; PP; PVDF; PFA; TEFLON; VESPEL) or how to calculate them? Suppliers do not give a lot of data,..is there a theory behind to estimate friction coefficient? thanks in advance!





RE: friction coefficient
RE: friction coefficient
You can find a lot of charts on google but most of the time they give something like "0.01-0.3" so that's not really helpful.
There are some easy ways to test it though, so maybe you could ask some samples and try them out.
NX 7.5
Teamcenter 8
RE: friction coefficient
RE: friction coefficient
There are so many variables that are range is the best you are ever going to get.
If you are designing something that relies on friction to work properly, then you need to do your own testing to get your own range.
You need to make sure that your design will work over the full range of possible values.
If you are relying on friction, and you do your design calculations using only a single value of mu, your design in guaranteed to fail.
RE: friction coefficient
You can get some ball park answers from the various websites or vendors pumping out plastics. AT Plastics is one that comes to mind.
Good luck with it, very tricky application.
Regards,
Cockroach
RE: friction coefficient
http://pl
First time I'd seen a "squeaking noise" rating, but maybe I just never looked.
RE: friction coefficient
If your results are at all criticially dependent on the number I think a test is important.
Cheers
Greg Locock
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RE: friction coefficient
Even if you find numbers there are so many variables in the real world that it's difficult to have much confidence that your real world application will match nominal values.
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: friction coefficient
RE: friction coefficient