Results 11 to 20 of about 1,987,255 (280)

Adjoint Error Estimation for Elastohydrodynamic Lubrication [PDF]

open access: yes, 2008
In this thesis, adjoint error estimation techniques are applied to complex elastohydrodynamic lubrication (EHL) problems. A functional is introduced, namely the friction, and justification is provided as to why this quantity, and hence its accuracy, is ...
Hart, Daniel Edward
core   +9 more sources

Simulation Model and Ultrasound Study for Engineering Interfaces [PDF]

open access: yes, 2012
Friction and wear are experienced both in terms of machine operation and finance. They impact, amongst other things, energy consumption and material loss, product manufacture and component maintenance.
Zhu, Juanjuan
core   +6 more sources

A Mixed Lubrication Deterministic Model of an Elastic Support Water-Lubricated Tilting Pad Thrust Bearing

open access: yesLubricants, 2023
In order to study the effect of surface roughness on lubrication performance of an elastic support water-lubricated tilting pad thrust bearing, a mixed lubrication (ML) deterministic model is hereby presented based on a unified Reynolds equation model ...
Xingxin Liang   +5 more
doaj   +1 more source

Study of film formation in EHD contacts using a novel method based on electrical capacitance [PDF]

open access: yes, 2011
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.The elastohydrodynamic lubrication regime (EHD) is found in many machine elements, such as rolling element bearings, gears, cam/tappet, where a combination ...
Furtuna, Marian Dumitru
core   +7 more sources

Performance of Poly Alpha Olefin Nanolubricant

open access: yesLubricants, 2020
The viscosity and tribological behavior of nanofluids formed by dispersed nano-diamond particles within Poly-Alpha-Olefin (PAO6) lubricant is studied at different concentrations. The variation of coefficient of friction with nanoparticle concentration is
Nader Dolatabadi   +4 more
doaj   +1 more source

Lubrication State Transformation and Characteristic Analysis of Sliding Bearing under Low Rotary Speed and High Eccentric

open access: yesJixie chuandong, 2022
Taking hydrodynamic sliding bearing as the research object,models of hydrodynamic lubrication and mixed lubrication are established. The characteristic parameters such as friction force,friction coefficient,load-carrying capacity and temperature rise of ...
Hongbin Zhang   +3 more
doaj  

Performance decay of stern bearing based on lubrication numerical model and state parameters

open access: yesZhongguo Jianchuan Yanjiu, 2022
ObjectiveThis paper puts forward a method for monitoring and evaluating the lubrication performance of a marine stern tube bearing which combines a lubrication performance decay model and support vector machine (SVM) algorithm.
Tao ZHANG   +3 more
doaj   +1 more source

A Mixed Lubrication Model of Piston Rings on Cylinder Liner Contacts Considering Temperature-Dependent Shear Thinning and Elastic–Plastic Contact

open access: yesLubricants, 2023
This work develops a numerical methodology for predicting the performance of an automotive piston ring system by considering contact and lubrication mechanics.
Nolan Ryan Chu   +3 more
doaj   +1 more source

Mixed Lubrication Modeling of Multi-Lip Reciprocating Seals Based on Elastohydrodynamic Lubrication Theory

open access: yesMachines, 2022
Multi-lip reciprocating seals are extensively used in the subject of engineering equipment. However, the current research on the tribology of reciprocating seals mainly focused focuses on the numerical analysis of single-lip seals.
Donghong Cheng, Lichen Gu, Yu Sun
doaj   +1 more source

Transient mixed thermo-elastohydrodynamic lubrication in multi-speed transmissions [PDF]

open access: yes, 2012
Noise, vibration and harshness (NVH) refinement as well as thermo-mechanical efficiency are the key design attributes of modern compact multi-speed transmissions.
Teodorescu, M.   +14 more
core   +1 more source

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