نتایج جستجو برای: mixed lubrication
تعداد نتایج: 226212 فیلتر نتایج به سال:
BACKGROUND Following various types of naturally-occurring traumatic injury to an articular joint, the lubricating ability of synovial fluid is impaired, with a correlated alteration in the concentration and/or structure of lubricant molecules, hyaluronan and proteoglycan-4. However, the effect of arthroscopic cartilage repair surgery on synovial fluid lubricant function and composition is unkno...
We propose a simple model, supported by contact-dynamics simulations as well as rheology and friction measurements, that links the transition from continuous to discontinuous shear-thickening in dense granular pastes to distinct lubrication regimes in the particle contacts. We identify a local Sommerfeld number that determines the transition from Newtonian to shear-thickening flows, and then sh...
We propose a simple model, supported by contact-dynamics simulations as well as rheology and friction measurements, that links the transition from continuous to discontinuous shear thickening in dense granular pastes to distinct lubrication regimes in the particle contacts. We identify a local Sommerfeld number that determines the transition from Newtonian to shear-thickening flows, and then sh...
This is the final technical report for NASA Grant No. NGR 11-002-133. The research under this grant consisted of elastohydrodynamic lubrication (ehd) studies and pressure-viscosity studies. Existing equipment was modified to more closely simulate practical ehd conditions. Analyses of ehd and pressure-viscosity data on eleven fluids previously investigated for NASA were also conducted. Near the ...
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