Results 111 to 120 of about 377 (140)
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Multi-dimple phenomena in TEHL point contacts
Science in China Series B, 2002Theoretical analysis and experimental measurement of the multiple dimples in thermal elastohydrodynamic lubrication (TEHL) point contacts have been carried out. Good agreement is found between the theoretical and experimental results. A thermal multi-spike theory is proposed to explain the multi-dimple phenomena.
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Proposed TEHL Solution System for the Thrust Bearings Inclusive of Surface Deformations
Tribology Transactions, 1995The coupled fluid and solid governing differential equations and their boundary conditions are expressed in dimensionless form which yield dimensionless problem parameters. The proposed solution system uses an efficient hybrid numerical approach. The boundary element method is employed for heat transfer in the pad, a finite difference method for the ...
C. M. Rodkiewicz, P. Yang
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A Numerical Analysis for TEHL of Eccentric-Tappet Pair Subjected to Transient Load
Journal of Tribology, 2003A full numerical analysis is carried out to simulate the thermal elastohydrodynamic lubrication (TEHL) of an eccentric-tappet pair. Comparisons between thermal and isothermal results are given to reveal the role of the thermal effect. Under various eccentricities, the influences of two surfaces moving in opposite directions on pressure and film ...
J. Wang, P. Yang
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TEHL Analysis of Aero-engine Mainshaft Roller Bearing Based on Quasi-dynamics
Jixie Gongcheng Xuebao/Chinese Journal of Mechanical Engineering, 2016 exaly +2 more sources
On the prediction of friction coefficient and wear in spiral bevel gears with mixed TEHL
Tribology International, 2017Abstract A prediction model of the friction coefficient and wear of the spiral bevel gears in the mixed lubrication condition is proposed. Effect of a coupling thermo-elasto-hydrodynamic phenomenon on tooth surface should be considered comprehensively prior to the execution of tooth wear analysis.
Jian-ge Zhang, Shao-jun Liu, Te Fang
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Stability analysis of rough journal bearings under TEHL with non-Newtonian lubricants
Tribology International, 2010Abstract The combined effects of surface roughness and lubricants rheology on stability of a rigid rotor supported on finite journal bearing under thermal elastohydrodynamic lubrication have been investigated using the transient method. The newly derived time dependent modified Reynolds and the adiabatic energy equations were formulated using a non ...
Mongkol Mongkolwongrojn
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Analysis of Two Surfaces in Line Contact under TEHL with Non-Newtonian Lubricants
Applied Mechanics and Materials, 2011This paper presents the static characteristics of two surfaces in line contact under TEHL with non-Newtonian lubricant. Modified Reynolds equation, elastic equation and energy equation were formulated to obtain the model. The model was simulated based on numerical method by using Newton-Raphson and multigrid multilevel techniques.
Rattapasakorn Sountaree +1 more
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Industrial Lubrication and Tribology, 2012
PurposeThe purpose of this paper is to describe an inverse approach to estimate the pressure distribution, temperature distribution, and pressure‐viscosity index (z) in a thermal elastohydrodynamic lubrication (TEHL) line contact.Design/methodology/approachOnce the film thickness is given, the pressure distribution can be calculated using the inverse ...
Li‐Ming Chu +3 more
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PurposeThe purpose of this paper is to describe an inverse approach to estimate the pressure distribution, temperature distribution, and pressure‐viscosity index (z) in a thermal elastohydrodynamic lubrication (TEHL) line contact.Design/methodology/approachOnce the film thickness is given, the pressure distribution can be calculated using the inverse ...
Li‐Ming Chu +3 more
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SAE International Journal of Engines, 2017
<div class="section abstract"><div class="htmlview paragraph">High combustion pressure in combination with high pressure gradient, as they e.g. can be evoked by high efficient combustion systems and e.g. by alternative fuels, acts as broadband excitation force which stimulates natural vibrations of piston, connecting rod and crankshaft ...
Wolfgang Gross +5 more
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<div class="section abstract"><div class="htmlview paragraph">High combustion pressure in combination with high pressure gradient, as they e.g. can be evoked by high efficient combustion systems and e.g. by alternative fuels, acts as broadband excitation force which stimulates natural vibrations of piston, connecting rod and crankshaft ...
Wolfgang Gross +5 more
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Effect of Solid Particle on TEHL under Line Contact with Solid-Liquid Lubricant
Advanced Materials Research, 2012The two infinitely long surfaces in line contact under thermoelastohydrodynamic lubrication with solid-liquid lubricants were investigated. The time-dependent modified Reynolds equation elasticity equation and the adiabatic energy equation have been formulated and solved numerically with initial conditions using multi-grid multi-level method with full ...
Sountaree Rattapasakorn +1 more
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