TY  - JOUR
AU  - Tiwari, Avinash
AU  - Wang, Anle
AU  - Müser, Martin H.
AU  - Persson, Bo
TI  - Contact Mechanics for Solids with Randomly Rough Surfaces and Plasticity
JO  - Lubricants
VL  - 7
IS  - 10
SN  - 2075-4442
CY  - Basel
PB  - MDPI
M1  - FZJ-2019-06557
SP  - 90
PY  - 2019
AB  - We present experimental results for the elastic and plastic deformation of sandblasted polymer balls resulting from contacts with flat smooth steel and silica glass surfaces. Nearly symmetric, Gaussian-like height probability distributions were observed experimentally before and remarkably, also after the polymer balls were deformed plastically. For all the polymers studied we find that the surface roughness power spectra for large wavenumbers (short length scales) are nearly unchanged after squeezing the polymer balls against flat surfaces. We attribute this to non-uniform plastic flow processes at the micrometer length scale. The experimental data are analyzed using the Persson contact mechanics theory with plasticity and with finite-element method (FEM) calculations
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000494477000009
DO  - DOI:10.3390/lubricants7100090
UR  - https://juser.fz-juelich.de/record/867964
ER  -