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Investigation of friction in rectangular Nitrile-Butadiene Rubber (NBR) hydraulic rod seals for defence applications

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Abstract

Contact based FE simulations have been carried out to estimate the contact pressure distribution at seal/rod interface at sealed oil pressures of 10, 20 and 30 MPa and constant rod velocity of 0.12 m/s. Oil film thickness at the interface was then computed analytically at various 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) rectangular hydraulic 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 comparison of theoretical and experimental data revealed that, friction computed from GW and Wassink’s models had good agreement with the experimental results.

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Author information

Authors and Affiliations

  1. R&DE (Engrs.), Dighi, Pune, 411015, India

    Shankar Bhaumik, S. Guruprasad & P. Bhandari

  2. Defence Institute of Advanced Technology (DU), Girinagar, Pune, 411025, India

    A. Kumaraswamy

Authors
  1. Shankar Bhaumik
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  2. A. Kumaraswamy
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  3. S. Guruprasad
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  4. P. Bhandari
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Corresponding author

Correspondence to A. Kumaraswamy.

Additional information

Recommended by Associate Editor Seong Beom Lee

Adepu Kumaraswamy graduated in Mechanical Engineering from Kakatiya University, Warangal, Telangana, India in 1992 and Masters in Design and Production of Machine Tools from National Institute of Technology (NIT), Warangal, in 1995. Subsequently, he has pursued Doctoral research work in the area of Static and Dynamic indentation behavior of materials for Defence Applications at Osmania University, Hyderabad in 2008. He has authored more than 20 publications in reputed journals and good number of publications in various conferences. He is a Principal investigator of two sponsored R&D projects in the area of Tribological studies of hydraulic seals and high strain rate deformation behavior of materials for defence applications. He has 13 years of post M.Tech and 7 years of post Ph.D. teaching experience. He was a Professor & Associate Dean (R&D) at SNIST (Autonomous institution), Hyderabad during 2008-10. He is currently Associate Professor & Head, Department of Mechanical Engineering and Head, Materials Management Group, Defence Institute of Advanced Technology (DU), Pune, funded by Department of Defence R&D, Ministry of Defence, Govt of India. He has guided one Ph.D., one M.S. (R), nine M.Tech and more than thirty B.Tech projects and is currently guiding five Ph.D. students apart from number of M.Tech students. In recognition of his contributions in the area of Science and Technology he was awarded with the following.

- Listed in Who’s Who in the World (29th edition), 2012.

- Fellow, Institution of Engineers (India).

- Visited Lehigh University, Bethlehem, Pennsylvania, USA, Dec, 2013.

- Reviewer, International journal of Materials Science & Engg-B (Elsevier)

- Reviewer, Journal of Mechanical Science and Technology (Springer)

- Reviewer, International Journal of the Physical Sciences (Elsevier).

- Reviewer, International journal of Materials & Design (Elsevier).

- Recipient of National Technology Day Oration award (NTD-2015).

Shankar Bhaumik was born on 16th Dec., 1961 in Farrukhabad, UP. He has graduated in Mechanical Engineering in 1984 from Visvesvaraya Regional College of Engineering (VREC) Nagpur, presently named as VNIT, Nagpur. Thereafter, he has worked for M/s TEXMACO Ltd., Kolkata as Asst. Engineer in Rolling Stock Design and Planning for 2 years. He has joined as Scientist `B’ in Fluid Power Group, R&DE (Engrs), DRDO, Pune in 1986. Subsequently, he obtained his Masters in Thermal and Fluid Power from IIT, Bombay in 1997. He took over as Head, Fluid Power Group, R&DE (Engrs), Pune in 2011 and thereafter promoted to Sc’G’ and and has been instrumental in Design and Development of Electro-Hydraulic Systems for Defence equipment. He was awarded Doctoral degree for the research work entitled ‘Investigation of Tribological Characteristics of Reciprocating Hydraulic seals subjected to shock loading’ by Defence Institute of Advanced Technology (DU), Pune in 2015. He has published good number of research papers in reputed international journals and presented papers in international conferences. He is a member of Fluid Power Society of India and Chairman for Bureau of India Standards Sectional Committee.

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Bhaumik, S., Kumaraswamy, A., Guruprasad, S. et al. Investigation of friction in rectangular Nitrile-Butadiene Rubber (NBR) hydraulic rod seals for defence applications. J Mech Sci Technol 29, 4793–4799 (2015). https://doi.org/10.1007/s12206-015-1026-9

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  • DOI: https://doi.org/10.1007/s12206-015-1026-9

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