Repository: Freie Universit├Ąt Berlin, Math Department

Three examples concerning the interaction of dry friction and oscillations

Mielke, A. (2017) Three examples concerning the interaction of dry friction and oscillations. In: Trends on Application of Mathematics to Mechanics. Springer INdAM series. (In Press)

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Abstract

We discuss recent work concerning the interaction of dry friction, which is a rate independent effect, and temporal oscillations. First, we consider the temporal averaging of highly oscillatory friction coefficients. Here the effective dry friction is obtained as an infimal convolution. Second, we show that simple models with state-dependent friction may induce a Hopf bifurcation, where constant shear rates give rise to periodic behavior where sticking phases alternate with sliding motion. The essential feature here is the dependence of the friction coefficient on the internal state, which has an internal relaxation time. Finally, we present a simple model for rocking toy animal where walking is made possible by a periodic motion of the body that unloads the legs to be moved.

Item Type:Book Section
Additional Information:Preprint 06/2017: WIAS Preprint No. 2405
Subjects:Mathematical and Computer Sciences > Mathematics > Applied Mathematics
ID Code:2175
Deposited By: Silvia Hoemke
Deposited On:08 Jan 2018 10:34
Last Modified:08 Jan 2018 10:34

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