elastohydrodynamic film thickness
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2020 ◽  
Vol 68 (2) ◽  
Author(s):  
Xingnan Zhang ◽  
Romeo Glovnea ◽  
Guillermo E. Morales-Espejel ◽  
Armando Félix-Quiñonez


2019 ◽  
Vol 131 ◽  
pp. 386-397 ◽  
Author(s):  
H.C. Liu ◽  
B.B. Zhang ◽  
N. Bader ◽  
F. Guo ◽  
G. Poll ◽  
...  


2016 ◽  
Vol 99 ◽  
pp. 267-277 ◽  
Author(s):  
Nigel Marx ◽  
Johan Guegan ◽  
Hugh A Spikes


2015 ◽  
Vol 137 (3) ◽  
Author(s):  
Thomas J. Zolper ◽  
Paul Shiller ◽  
Manfred Jungk ◽  
Tobin J. Marks ◽  
Yip-Wah Chung ◽  
...  

Siloxane-based polymers (polysiloxanes) are susceptible to temporary shear-thinning that manifests as a reduction of elastohydrodynamic film thickness with increasing entrainment speed or effective shear rate. The departure from Newtonian film thickness can be predicted with the power-law exponent ns, an indicator of the severity of shear-thinning in a polymeric fluid that is influenced by the macromolecular structure. In this paper, a combination of extant rheological and tribological models is applied to determine the power-law exponent of several polysiloxanes using film thickness measurements. Film thickness data at several temperatures and slide-to-roll ratios are used to validate the methodology for several siloxane-based polymers with alkyl and aryl branches.





2013 ◽  
Vol 64 ◽  
pp. 33-38 ◽  
Author(s):  
Scott Bair ◽  
Ivan Krupka ◽  
Petr Sperka ◽  
Martin Hartl


2010 ◽  
Vol 43 (11) ◽  
pp. 2159-2165 ◽  
Author(s):  
Punit Kumar ◽  
Scott Bair ◽  
Ivan Krupka ◽  
Martin Hartl


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