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Shankar Bhaumik,A. Kumaraswamy,S. Guruprasad,P. Bhandari 대한기계학회 2015 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.29 No.11
Contact based FE simulations have been carried out to estimate the contact pressure distribution at seal/rod interface at sealed oil pressuresof 10, 20 and 30 MPa and constant rod velocity of 0.12 m/s. Oil film thickness at the interface was then computed analytically atvarious combinations of oil pressures and rod velocities. Seal contact pressure and oil film thickness data along with surface roughness,intermolecular interaction between seal/rod interfaces has been perused to estimate the friction in Nitrile-Butadiene Rubber (NBR) rectangularhydraulic rod seals using theoretical models such as Inverse hydrodynamic lubrication (IHL), Greenwood-Williamson (GW)and Wassink’s models. The friction at seal/rod interface was also measured experimentally using a specially designed test rig. The comparisonof theoretical and experimental data revealed that, friction computed from GW and Wassink’s models had good agreement withthe experimental results.