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Einfluss einer Reibhysterese auf selbsterregte Schwingungen von Partikel-Festkörper-Systemen

Fürstner, Thomas ; Kröger, Matthias

Tribologie und Schmierungstechnik, 2021-09, Vol.68 (3-4), p.50-57 [Periódico revisado por pares]

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Título:
Einfluss einer Reibhysterese auf selbsterregte Schwingungen von Partikel-Festkörper-Systemen
Autor: Fürstner, Thomas ; Kröger, Matthias
É parte de: Tribologie und Schmierungstechnik, 2021-09, Vol.68 (3-4), p.50-57
Descrição: The influence of a friction hysteresis on the self-exciting in a particle-solid-system will be investigated by experiments and a numerical model. For this, a test rig will be presented. This test rig allows to measure the actual acting friction force. Furthermore, a numerical model will be presented which has a differentiation between a time-dependent friction behavior in sliding and sticking. Bigger differences can be observed in the system behavior – even with a quality similar curve of the measured friction hysteresis. For example, in a system with PVC-W particles exists a sharp boundary between an area of stable stick-slip oscillation and an area of subsiding oscillation. In comparison to this, a system with PMMA particles has a smooth transition region between these two areas. The followed simulation studies shown, that the selfexciting mechanism is a complex interaction between the time-dependent behavior during the sliding and sticking and the external average system velocity.
Idioma: Inglês

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