Results 11 to 20 of about 15,244 (232)

Maximizing the Energy Output of Soft Electrohydraulic Generators. [PDF]

open access: yesAdv Sci (Weinh)
Many energy resources cannot be viably harvested with electromagnetic generators. This article evaluates the potential of soft electrohydraulic generators as an alternative approach for energy capture. An analytical model charts their operational limits and a rigorous experimental study results in new performance benchmarks with maximum specific energy
Kirkman S   +7 more
europepmc   +2 more sources

Lubrication Analysis of Small-End Bearings of Reciprocating Engines Based on Orthogonal Experiment

open access: yesApplied Sciences, 2023
Small end bearings are a critical component of reciprocating engines, and the performance of their lubrication performance directly affects engines’ reliability and mechanical efficiency. There are many factors that influence their lubrication.
Sicong Sun   +6 more
doaj   +1 more source

Marine Four-Stroke Diesel Engine Crankshaft Main Bearing Oil Film Lubrication Characteristic Analysis

open access: yesPolish Maritime Research, 2018
The Craig-Bampton modal synthesis method was used to establish the dynamic model of marine four-stroke diesel engine body and crankshaft. Based on the Greenwood/Tripp microlong contact theory considering the surface roughness and the generalized Reynolds
Xian Bin Teng, Jun Dong Zhang
doaj   +1 more source

An Accurate Analysis for Computation of Thermal Minimum Film Thickness in Inlet Zone in Hydrostatic Extrusion Process

open access: yesTribology Online, 2013
Existence of thin lubricating film in inlet zone at the die and billet interface in hydrostatic extrusion process prevents metal-to-metal contacts in contact zone, which leads to reduction in interfacial solid friction.
Pankaj Tomar   +2 more
doaj   +1 more source

Influence of Radial Journal Profile of Main Bearing on Lubrication State

open access: yesJixie chuandong, 2021
Taking the main bearing of a diesel engine as the study object, the lubrication state analysis model of the main bearing is established by taking the roughness and elastic deformation of the main bearing surface into account, and the influence of the ...
Chunjian Li   +4 more
doaj  

The Piston Ring-Cylinder Bore Interface Leakage of Bent-Axis Piston Pumps Based on Elastohydrodynamic Lubrication and Rotation Speed

open access: yesShock and Vibration, 2021
The bent-axis piston pump is the core component of electrohydrostatic actuators (EHA) in aerospace applications, and its wear of key friction interfaces is greatly related to the healthy operation of pumps.
Lvjun Qing   +4 more
doaj   +1 more source

Thermal Effects in Slender EHL Contacts

open access: yesLubricants, 2022
This study deals with experimental and numerical analysis of the thermal effects of slender elastohydrodynamically lubricated (EHL) contacts under high sliding. Thereby, the entrainment direction is along the major axis of the contact ellipse.
Marko Tošić   +2 more
doaj   +1 more source

Investigation of PEEK Lined Pads for Tilting-Pad Journal Bearings

open access: yesMachines, 2022
Tilting-pad journal bearings are widely used in industry to support rotating shafts due to their high dynamic performance. The operating limits of these bearings are mainly represented by the maximum permissible temperature of the lined materials of the ...
Steven Chatterton   +4 more
doaj   +1 more source

Adaptive Foam 3D Printing of Ultralight and Multifunctional Materials

open access: yesAdvanced Engineering Materials, EarlyView.
Adaptive foam 3D printing, enabled by expandable microspheres, imparts cellular structures to thermoplastic and thermosetting polymers, manufactured through a variety of processes including fused filament fabrication, direct ink writing, digital light processing, and inkjet printing.
Nariman Rajabifar, Amir Ameli
wiley   +1 more source

Study on Distribution of Lubricating Oil Film in Contact Micro-Zone of Full Ceramic Ball Bearings and the Influence Mechanism on Service Performance

open access: yesLubricants, 2022
Compared with metal ball bearings, full ceramic ball bearings have more outstanding service performance under extreme working conditions. In order to reveal the lubrication mechanism and improve the operation performance and service life of full ceramic ...
Jinmei Yao   +7 more
doaj   +1 more source

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