Contact Mechanics of Rough Spheres: Crossover from Fractal to Hertzian Behavior
Keyword(s):
We investigate the normal contact stiffness in a contact of a rough sphere with an elastic half-space using 3D boundary element calculations. For small normal forces, it is found that the stiffness behaves according to the law of Pohrt/Popov for nominally flat self-affine surfaces, while for higher normal forces, there is a transition to Hertzian behavior. A new analytical model is derived describing the contact behavior at any force.
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2014 ◽
Vol 50
(21)
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pp. 54
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2013 ◽
Vol 760-762
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pp. 2064-2067
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2011 ◽
Vol 328-330
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pp. 336-345
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2016 ◽
Vol 230
(9)
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pp. 1382-1391
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2019 ◽
Vol 234
(7)
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pp. 1007-1016
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2009 ◽
Vol 465
(2108)
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pp. 2565-2588
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2015 ◽
Vol 28
(1)
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pp. 33-39
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