Adhesive and normal stress-dependent dynamic friction of a gelatin hydrogel

Autor:	Jitendra Kumar Katiyar, Arun K. Singh, Vinit Gupta, Nitish Sinha
Rok vydání:	2021
Předmět:	food.ingredient Materials science Mechanical Engineering Surfaces and Interfaces Adhesion Gelatin Surfaces Coatings and Films Condensed Matter::Soft Condensed Matter food Soft solids Coulomb Dynamical friction Adhesive Composite material Coefficient of friction
Zdroj:	Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology. 236:1789-1793
ISSN:	2041-305X 1350-6501
Popis:	Adhesion and friction of soft solids on hard surfaces are the important properties for a variety of practical applications. In the present study, Coulomb's law of friction is used for characterizing adhesive friction as well as normal stress-dependent dynamic friction of a gelatin hydrogel on a fixed glass surface. The experimental data, concerning normal stress-dependent dynamic friction of different shear velocity, are obtained from literature. It is observed that both components of friction increase with shear velocity. More importantly, the scaling law shows that adhesive stress varies almost linearly with corresponding coefficient of friction of the hydrogel. A dynamic friction model is also used to analyze the same experimental data to predict a negative normal stress at which dynamic friction reduces to zero, and this result matches closely with the experimental value.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3372a3862797739f515080da93b1d0ae https://doi.org/10.1177/13506501211044650 Zobrazit plný text záznamu