Том 15 (2012)
- Номер 1 (январь-февраль 2012)
- Номер 2 (март-апрель 2012)
- Номер 3 (май-июнь 2012)
- Номер 4 (июль-август 2012)
- Номер 5 (сентябрь-октябрь 2012)
- Номер 6 (ноябрь-декабрь 2012)
Investigation of the dry normal contact between fractal rough surfaces using the reduction method, comparison to 3D simulations
Pohrt R.1, Popov V.L. 11Berlin University of Technology, Berlin, 10623, Germany
УДК 539.62
The reduction method was applied to solving the elastic contact problem of fractal rough surfaces having different fractal dimensions. These surfaces are of particular interest, as contact spots influence each other on large and small scales, depending on the power spectrum. Results were compared to previous boundary-element method simulations that had been conducted with 3D surfaces, taking into account all interdependencies between contact spots. Excellent agreement in the contact stiffness was found. Even though no interactions are allowed in the reduced model, the same power-law behavior can be observed as in the 3D case, due to the transformation of the power spectrum. Theoretical considerations about the power-law for different fractal dimensions are given.
стр. 31 – 35
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