Numerical Study of the Limitations of the Energy-Based Criterion for the Formation of Wear Debris.

Autor: Dudkin, Ivan V., Shilko, Evgeny V., Dimaki, Andrey V.
Předmět:
Zdroj: AIP Conference Proceedings; 2018, Vol. 2051 Issue 1, p020069-1-020069-4, 4p, 1 Diagram, 1 Graph
Abstrakt: The paper is devoted to a numerical analysis of the applicability of Rabinowicz’s energy-based macroscopic criterion of adhesive wear mode for prediction of the dominating mechanism of wear of surface asperities in elasticplastic materials with finite values of the strain hardening coefficient. The results of the study confirmed the adequacy of this criterion in the case of “highly plastic” materials characterized by “low” values of yield stress and strain hardening coefficient, which do not exceed half of the tensile strength and Young’s modulus respectively. We showed that at larger values of these mechanical parameters the critical size of asperities is determined not only (and not so much) by the mechanical characteristics of the material, but mainly by the peculiarities of the contact interaction of asperities. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index