TY - JOUR
T1 - Generalized effects in confined fluids
T2 - New friction map for boundary lubrication
AU - Luengo, Gustavo
AU - Israelachvili, Jacob
AU - Granick, Steve
N1 - Funding Information:
This work was supportedb y grants from the Exxon Researcha nd EngineerinCgo rporationI.n additiona, t the Universityo fC aliforniaw, ea cknowledgteh eD epartmeonft Energy( DOE) underg rantD E-FG03-87ER4533a1n dthe Ministeriod eE ducaei6yn C iencia (SPAIN) undeFr PI grant EX92-5135903A4t. the Universityo f Illinois, we acknowl-edget heU .S. Air Force( AFOSR-URI-F49620-93-1-02-)4 1 andt heN ationaSl cienceF oundation(T ribologyP rogram).
PY - 1996/12/1
Y1 - 1996/12/1
N2 - Recent advances in measuring the rheology and tribology of thin liquid films between shearing surfaces have enabled previously-inaccessible parameters to be measured accurately during fractional sliding. These include the real area of contact, the local asperity load and pressure, and the sheared film thickness. The results show striking non-continuum, non-bulk like effects when the thicknesses of sheared films approach molecular dimensions as occurs under most tribological conditions. Based on these new results, we assess the validity of current presentations of friction processes, such as the Stribeck curve, and propose new constitutive relations and a dynamic friction map, including an alternative Stribeck type curve representation, which are also formulated in terms of more accessible parameters.
AB - Recent advances in measuring the rheology and tribology of thin liquid films between shearing surfaces have enabled previously-inaccessible parameters to be measured accurately during fractional sliding. These include the real area of contact, the local asperity load and pressure, and the sheared film thickness. The results show striking non-continuum, non-bulk like effects when the thicknesses of sheared films approach molecular dimensions as occurs under most tribological conditions. Based on these new results, we assess the validity of current presentations of friction processes, such as the Stribeck curve, and propose new constitutive relations and a dynamic friction map, including an alternative Stribeck type curve representation, which are also formulated in terms of more accessible parameters.
KW - Frictional sliding
KW - Polymeric fluids
KW - Rheological behavior
KW - Thin liquid films
UR - http://www.scopus.com/inward/record.url?scp=0030436276&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0030436276&partnerID=8YFLogxK
U2 - 10.1016/S0043-1648(96)07248-1
DO - 10.1016/S0043-1648(96)07248-1
M3 - Article
AN - SCOPUS:0030436276
SN - 0043-1648
VL - 200
SP - 328
EP - 335
JO - Wear
JF - Wear
IS - 1-2
ER -