Results 41 to 50 of about 2,938 (191)

Dynamic Characteristics Analysis of a Large Wind Turbine Gearbox Supported by Journal Bearings Under Different Lubrication States

Wind Energy
Due to their superior load density, planetary gear journal bearings (PGJB) are progressively replacing rolling element bearings in wind turbine gearboxes; therefore, accurately revealing the dynamic characteristics of drivetrains supported by these ...
Pengcheng Jin, Hong Jiang, Jianxing Zhou, Yuliang Yang   +3 more
doaj   +1 more source

Application of the Optimization Methods to the Search of Marine Propulsion Shafting Global Equilibrium in Running Condition

Polish Maritime Research, 2019
Full-film hydrodynamic lubrication of marine propulsion shafting journal bearings in running condition is discussed. Considerable computational difficulties in non-linear determining the quasi-static equilibrium of the shafting are highlighted.
Ursolov Aleksandr, Batrak Yuriy, Tarelko Wieslaw   +2 more
doaj   +1 more source

Gait alterations increase friction of degenerated articular cartilage: A tribological study

Knee Surgery, Sports Traumatology, Arthroscopy, EarlyView.
Abstract Purpose To investigate the effect of gait alterations associated with osteoarthritis (OA) on the frictional properties of porcine articular cartilage (AC) in intact and degenerative conditions. Methods Forty‐eight cylindrical AC samples were harvested from 12 porcine femur condyles and equally divided between four groups with n = 12 samples ...
Luisa de Roy, Graciosa Quelhas Teixeira, Maria Ahrens, Benjamin Mayer, Cornelia Horsch, Anita Ignatius, Andreas Martin Seitz   +6 more
wiley   +1 more source

Stochastic multiscale analysis in hydrodynamic lubrication [PDF]

International Journal for Numerical Methods in Engineering, 2017
SummaryA stochastic multiscale analysis framework is developed for hydrodynamic lubrication problems with random surface roughness. The approach is based on a multi‐resolution computational strategy wherein the deterministic solution of the multiscale problem for each random surface realization is achieved through a coarse‐scale analysis with a local ...
A. Waseem, J. Guilleminot, İ. Temizer
openaire   +5 more sources

Effect of surface texturing on hydrodynamic lubrication at various temperatures

AIP Advances, 2020
The formation of hydrodynamic lubrication is analyzed based on an experimental study of the hydrodynamic lubrication characteristics between two parallel surfaces with different types of surface texturing.
Huichao Gao, Xinyuan Chen
doaj   +1 more source

Analysis of Mechanical‐Electrical‐Hydraulic Coupled Vibration Response Characteristics of Thermal Control Circulating Pumps Supported by Water‐Lubricated Bearings

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT The operational reliability of thermal control circulation pumps is significantly restricted by the multi‐physics coupled environment. To reveal the vibration transmission mechanisms and dynamic response characteristics under multi‐field coupled excitations, a multi‐DOF coupled dynamic representation of the overall system, incorporating the ...
Jianfeng Luo, Liukai Hou, Yutao Zou, Kaiyuan Hao, Guangwu Zhou   +4 more
wiley   +1 more source

Numerical analysis on hydrodynamic pressure in grinding contact zone

Jin'gangshi yu moliao moju gongcheng, 2017
In the grinding process, hydrodynamic pressure has great influence on flow rate, lubrication and cooling behavior of the coolant lubricate.Based on hydrodynamic lubrication theory, mathematical model of the hydrodynamic pressure in grinding contact zone ...
MAO Shujie, XU Jiuhua, ZHAO Zhengcai, FU Yucan   +3 more
doaj  

An Integrated Statistical and Machine Learning Framework for Predicting the Dry Sliding Tribological Behavior of CFRP and GFRP Composites Under Environmental Aging and Loading Conditions

Polymer Composites, EarlyView.
The graphical abstract presents the experimental and data‐driven framework used to investigate the dry sliding tribological behavior of CFRP and GFRP composites. The effects of seawater, engine oil, diesel fuel, aging time, and normal load on the specific wear rate (SWR) and coefficient of friction (COF) were evaluated using pin‐on‐disc tests, ANOVA ...
Ahmet Saylık, İhsan Tuğal, Şemsettin Temiz   +2 more
wiley   +1 more source

Towards Sustainable PP Composites: The Roles of Pineapple Crown Fibers (PCFs) and Functional Additives on the PP Rheological and Viscoelastic Behaviors

Polymer Engineering &Science, EarlyView.
Preparation and rheological characterization of polypropylene composites reinforced with pineapple crown fibers and compatibilized with organic acids. ABSTRACT This research presents a comprehensive rheological and viscoelastic study of polypropylene (PP) composites reinforced with pineapple crown fibers (PCF) and compatibilised using carboxylic acids (
Giordano Pierozan Bernardes, Otavio Bianchi, Matheus Poletto   +2 more
wiley   +1 more source

Effects of Surface Chemical Properties on the Frictional Properties of Self-Assembled Monolayers Lubricated with Oleic Acid

Tribology Online, 2012
Self-assembled monolayers (SAMs) of hexadecanethiol (HDT) and 16-mercaptohexadecanoic acid (MHDA) were used to vary the surface chemical properties, and oleic acid (OA) was used as a lubricant. A pin-on-disk tribometer equipped with Fourier transform IR (
Koji Miyake, Takamasa Kume, Miki Nakano, Atsushi Korenaga, Koji Takiwatari, Ryo Tsuboi, Shinya Sasaki   +6 more
doaj   +1 more source