Calculation of the Stress-Strain State for Surface Layers of Materials at the Mesolevel.

Autor: Evtushenko, Eugene
Předmět:
Zdroj: AIP Conference Proceedings; 2019, Vol. 2167 Issue 1, p020092-1-020092-5, 5p, 1 Diagram, 3 Graphs
Abstrakt: The present paper studies the stress-strain state in the near-surface layer of the material under surface loading. The thickness of the layer is much larger than the average surface roughness. The material and its surface take into account the elements of the internal structure and the approach of physical mesomechanics to the description of its behavior. The stress-strain state is calculated with a finite-difference method for solving a set of equations that describe the mechanical behavior of the material under dynamic loading. It is shown that the used physical mesomechanics approach allows modeling an inhomogeneous stress-strain state with the formation of localized deformation bands and a block-like structure of the plastic flow. Modeling of the stress-strain state for near-surface layer allows estimating its thickness and the degree of influence on the overall deformation. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index