TY - JOUR
T1 - On sub-surface stress caused by contact roughness in compressible elastic solids
AU - Murugesan, Yaswanth
AU - Venugopalan, Syam P.
AU - Nicola, Lucia
PY - 2021
Y1 - 2021
N2 - Contact between elastic bodies with self-affine rough surfaces is mostly studied with a focus on determining surface fields, despite body fields are of great importance to establish, for instance, when and where elasticity breaks down. This work aims at analyzing the effect of contact roughness on the body fields of compressible frictionless solids modeled using Green's function molecular dynamics. Although area-load curves are insensitive to changes in the Hurst exponent as long as they are correctly normalized and are clearly not affected by compressibility, the Von-Mises stress is found to depend on both Hurst exponent and Poisson's ratio.
AB - Contact between elastic bodies with self-affine rough surfaces is mostly studied with a focus on determining surface fields, despite body fields are of great importance to establish, for instance, when and where elasticity breaks down. This work aims at analyzing the effect of contact roughness on the body fields of compressible frictionless solids modeled using Green's function molecular dynamics. Although area-load curves are insensitive to changes in the Hurst exponent as long as they are correctly normalized and are clearly not affected by compressibility, the Von-Mises stress is found to depend on both Hurst exponent and Poisson's ratio.
KW - Compressibility
KW - Contact
KW - Rough surfaces
KW - Simulation
UR - http://www.scopus.com/inward/record.url?scp=85103703141&partnerID=8YFLogxK
U2 - 10.1016/j.triboint.2021.106867
DO - 10.1016/j.triboint.2021.106867
M3 - Article
AN - SCOPUS:85103703141
SN - 0301-679X
VL - 159
JO - Tribology International
JF - Tribology International
M1 - 106867
ER -