Frictional force on sliding drops
نویسندگان
چکیده
منابع مشابه
Perturbation Stability of Frictional Sliding with Varying Normal Force
In many systems, the normal force at friction contacts is not constant, but instead is a function of the system's state variables. Examples include machine tools, friction dampers, brake systems and robotic contact with the environment. Friction at these contacts has been shown to possess dynamics associated with changes in normal force. In an earlier paper, the authors derived a critical value...
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This paper presents the stability analysis of a single degree of freedom elastic system following a rateand state-dependent friction law. Normal force is assumed to depend on the displacement, velocity and acceleration of the sliding interface. The history dependence of friction on normal force is included in the analysis. It is shown that to achieve steady sliding, system sti ness must exceed ...
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– We use a free energy lattice Boltzmann approach to investigate numerically the dynamics of drops moving across superhydrophobic surfaces. The surfaces comprise a regular array of posts small compared to the drop size. For drops suspended on the posts the velocity increases as the number of posts decreases. We show that this is because the velocity is primarily determined by the contact angle ...
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We have developed different network approaches to complex patterns of frictional interfaces (contact areas developments). Network theory is a fundamental tool for the modern understanding of complex systems in which, by a simple graph representation, the elementary units of a system become nodes and their mutual interactions become links. With this transformation of a system to network space, m...
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We study the frictional sliding of two ideally incommensurate surfaces with a third incommensurate sheet – a sort of extended lubricant – in between. When the mutual ratios of the three periodicities in this sandwich geometry are chosen to be the golden mean φ = (1 + √ 5)/2, this system is believed to be statically pinned for any choice of system parameters. In the present study we overcome thi...
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ژورنال
عنوان ژورنال: Physical Review Fluids
سال: 2019
ISSN: 2469-990X
DOI: 10.1103/physrevfluids.4.014001