Abstract
AbstractThe proposed model describes the behavior of the lubricant particles at the interface between two surfaces for a group of cylindrical semi-solid lubricant fragments observed in a real beetle leg joint. It is shown that the lubricant particles may maintain a gap between joint surfaces at load. At the regular shear motion, such randomly oriented particles are reorienting perpendicular to the shear and function as a rolling bearing: the system demonstrates the lowest energy loss and lowest friction. At an increased load, the friction non-linearly increases, because of an increase of the particles’ eccentricity. Finally, at some load, the particle rotation stops, friction switches from the rolling to the sliding regime and increases significantly.
Funder
Alexander von Humboldt-Stiftung
Deutsche Forschungsgemeinschaft
Christian-Albrechts-Universität zu Kiel
Publisher
Springer Science and Business Media LLC
Subject
Surfaces, Coatings and Films,Surfaces and Interfaces,Mechanical Engineering,Mechanics of Materials
Reference23 articles.
1. Taylor, G.K., Thomas, A.L.R.: Evolutionary biomechanics: selection, phylogeny, and constraints. Oxford University Press, Oxford (2014)
2. Alexander, D.: Nature’s machines: an introduction to organismal biomechanics. Elsevier Academic Press, London (2017)
3. Wilson, R.: Biomimetic robotics. Willford Press (2016)
4. Webb, B.: From insects to robots. Arthropod Struct. Dev., Special Issue 46, 687–752 (2017)
5. Persiani, S.: Biomimetic of motion: nature-inspired parameters and schemes for kinetic design. Springer Cham (2018)