Molecular probes reveal deviations from Amontons’ law in multi-asperity frictional contacts

• Published in: Nature communications Vol. 9; no. 1; pp. 888 - 7
• Main Authors: Weber, B., Suhina, T., Junge, T., Pastewka, L., Brouwer, A. M., Bonn, D.
• Format: Journal Article
• Language: English
• Published: London Nature Publishing Group UK 01.03.2018; Nature Publishing Group; Nature Portfolio
• Subjects: 132/124; 147/3; 639/301/119/544; 639/301/357/537; Asperity; Coefficient of friction; Computer simulation; Friction; Humanities and Social Sciences; Legal issues; multidisciplinary; Plasticity; Science; Science (multidisciplinary); Tribology; Ultrasonic testing

Amontons’ law defines the friction coefficient as the ratio between friction force and normal force, and assumes that both these forces depend linearly on the real contact area between the two sliding surfaces. However, experimental testing of frictional contact models has proven difficult, because...