Effect of Optimized Slip and Texture
Zone on the Performance
of Hydrodynamic Journal Bearing
Mohammad Arif, Saurabh Kango, Dinesh Kumar Shukla, and Nitin Sharma
Abstract Conventional hydrodynamic bearing material is wettable in nature, and
these materials cause high force of friction in small scale micro-electro-mechanical
systems. However, selecting any material with non-wettability behavior provides
good scope for reduction of high coefficient of friction in MEMS-based applications.
Like non-wettability, the micro-scale random or regular surface texturing is also one
of the methods to increase the load carrying capacity in MEMS. Therefore, in the
present work, the effect of optimize slippage and surface texture zone on one of
the mechanical components (hydrodynamic journal bearing) of MEMS device is
investigated. The finite difference method with central differencing scheme is used
to discretize the generalized Reynolds equation. It is observed from the results that
the optimized slip and texture zone has a positive effect on the load carrying capacity
and maximum pressure of hydrodynamic journal bearing.
Keywords MEMS · Surface texture · Navier no-slip condition · Navier slip
condition · Load carrying capacity
Abbreviation
B
dimensionless slip length, (b/c r )
c r
radial clearance
R
bearing radius
L z
bearing longitudinal length
h
fluid film thickness
H
dimensionless fluid film thickness (h/c r )
h t fluid film thickness for cylindrical textures
H t dimensionless fluid film thickness due to cylindrical textures ((h t /c r )
M. Arif (B) · S. Kango · D. K. Shukla · N. Sharma
Department of Mechanical Engineering, Dr B R Ambedkar National Institute of Technology,
Jalandhar, India
e-mail: mohammada.me.18@nitj.ac.in
© The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2021
A. K. Parwani et al. (eds.), Recent Advances in Mechanical Infrastructure,
Lecture Notes in Intelligent Transportation and Infrastructure,
https://doi.org/10.1007/978-981-33-4176-0_37
433
Zone on the Performance
of Hydrodynamic Journal Bearing
Mohammad Arif, Saurabh Kango, Dinesh Kumar Shukla, and Nitin Sharma
Abstract Conventional hydrodynamic bearing material is wettable in nature, and
these materials cause high force of friction in small scale micro-electro-mechanical
systems. However, selecting any material with non-wettability behavior provides
good scope for reduction of high coefficient of friction in MEMS-based applications.
Like non-wettability, the micro-scale random or regular surface texturing is also one
of the methods to increase the load carrying capacity in MEMS. Therefore, in the
present work, the effect of optimize slippage and surface texture zone on one of
the mechanical components (hydrodynamic journal bearing) of MEMS device is
investigated. The finite difference method with central differencing scheme is used
to discretize the generalized Reynolds equation. It is observed from the results that
the optimized slip and texture zone has a positive effect on the load carrying capacity
and maximum pressure of hydrodynamic journal bearing.
Keywords MEMS · Surface texture · Navier no-slip condition · Navier slip
condition · Load carrying capacity
Abbreviation
B
dimensionless slip length, (b/c r )
c r
radial clearance
R
bearing radius
L z
bearing longitudinal length
h
fluid film thickness
H
dimensionless fluid film thickness (h/c r )
h t fluid film thickness for cylindrical textures
H t dimensionless fluid film thickness due to cylindrical textures ((h t /c r )
M. Arif (B) · S. Kango · D. K. Shukla · N. Sharma
Department of Mechanical Engineering, Dr B R Ambedkar National Institute of Technology,
Jalandhar, India
e-mail: mohammada.me.18@nitj.ac.in
© The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2021
A. K. Parwani et al. (eds.), Recent Advances in Mechanical Infrastructure,
Lecture Notes in Intelligent Transportation and Infrastructure,
https://doi.org/10.1007/978-981-33-4176-0_37
433