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A web site APP for rough contact adhesion from simple Ciavarella BAM model

Mike Ciavarella's picture

 

See online App for rough contact adhesion based on the BAM model of Ciavarella

 

http://www.tribonet.org/adhesion-calculator-for-rough-surfaces-bearing-a...

 

This is just a single closed form equation, which rivals and competes with the cumbersome 5 dimensional integrals of the theory of Persson and Scaraggi [2014] which is sold commercially (see http://www.multiscaleconsulting.com/) for a high price, and is not public domain.

 

This single line equation explains the very sophisticated data of Pastewka and Robbins [2014] on PNAS, about pull-off, despite contrasts with the conclusion of Pastewka and Robbins that stickiness should depend only on rms slopes and rms curvatures. Indeed, in the BAM theory, pull-off depends only on rms amplitude of roughness!

 

[1] M. Ciavarella,  A very simple estimate of adhesion of hard solids with rough surfaces based on a bearing area model, Meccanica, DOI 10.1007/s11012-017-0701-6.

 

[2] Persson, B. N., & Scaraggi, M. (2014). Theory of adhesion: Role of surface roughness. The Journal of chemical physics, 141(12), 124701.

 

[3] Pastewka, L., & Robbins, M. O. (2014). Contact between rough surfaces and a criterion for macroscopic adhesion. Proceedings of the National Academy of Sciences, 111(9), 3298-3303.

 

Comments

Mike Ciavarella's picture

There were some errors in the earlier version, that some people noticed, thank you for help.

 

Now the APP finds the pull-off force also, and is corrected.

 

http://www.tribonet.org/adhesion-calculator-for-rough-surfaces-bearing-a...

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