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okada type, friction between two surface
Posted May 25, 2020, 7:02 a.m. EDT Structural & Acoustics Version 5.5 1 Reply
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Hi all.
I need some suggestions about how to model a dislocation source (Okada type). The source is modeled as a couple of contact boundaries. I want to put some friction on the surfaces and I add the friction node (under the contact node in Solid mechanics). After, I planned to made a comparison with the results from a similar model to see if they are comparable. From Comsol, gotthe same results only if I choose a value friction = 4. But from what I understood the friction coefficient should between 0 and 1 in Comsol, as 1 should be the maximum friction. Can somebody explain this to me? I tried to see something more in the knowledge base but coudn't find anything. Maybe I am not considering some general conditions??
Thanks to all who can help me. Chiara
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Hi,
There is no fundamental reason to assume that the friction coefficient is limited by 1. The value 4 is perfectly valid, even if extremely unusual. As an example, silver sliding on silver has been reported as having a friction coefficient of 1.4.
-------------------Henrik Sönnerlind
COMSOL