This title appears in the Scientific Report :
2019
Please use the identifier:
http://hdl.handle.net/2128/23634 in citations.
Please use the identifier: http://dx.doi.org/10.3390/lubricants7100090 in citations.
Contact Mechanics for Solids with Randomly Rough Surfaces and Plasticity
Contact Mechanics for Solids with Randomly Rough Surfaces and Plasticity
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 aft...
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Personal Name(s): | Tiwari, Avinash |
---|---|
Wang, Anle / Müser, Martin H. / Persson, Bo (Corresponding author) | |
Contributing Institute: |
Quanten-Theorie der Materialien; IAS-1 Quanten-Theorie der Materialien; PGI-1 |
Published in: | Lubricants, 7 (2019) 10, S. 90 |
Imprint: |
Basel
MDPI
2019
|
DOI: |
10.3390/lubricants7100090 |
Document Type: |
Journal Article |
Research Program: |
Controlling Electron Charge-Based Phenomena |
Link: |
OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.3390/lubricants7100090 in citations.
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 |