Results 21 to 30 of about 5,746,922 (239)

Recent Advances in Non-Traditional Elastic Wave Manipulation by Macroscopic Artificial Structures

open access: yesApplied Sciences, 2020
Metamaterials are composed of arrays of subwavelength-sized artificial structures; these architectures give rise to novel characteristics that can be exploited to manipulate electromagnetic waves and acoustic waves. They have been also used to manipulate
Jeonghoon Park, Dongwoo Lee, Junsuk Rho
doaj   +1 more source

Creep and Hardening Characteristics of Anthracite under Graded Static–Dynamic Coupled Loading

open access: yesApplied Sciences, 2023
Remaining coal pillars in remining areas exhibit clear creep characteristics, and dynamic pressure accelerates their instability and failure. The creep and hardening characteristics of coal under dynamic pressure are of great engineering significance for
Shaofei Yue   +5 more
doaj   +1 more source

Elastic shear buckling characteristics of LiteSteel Beams [PDF]

open access: yes, 2010
LiteSteel beam (LSB) is a new cold-formed steel hollow flange channel beam. The unique LSB section is produced by a patented manufacturing process involving simultaneous cold-forming and dual electric resistance welding.
Mahendran, Mahen   +3 more
core   +1 more source

Study on magnetic preparation of dual disk based on silica gel magneto-elastic abrasive particles

open access: yesXibei Gongye Daxue Xuebao, 2021
Magneto-elastic abrasive grains have magnetism, low elastic modulus and excellent abrasive performance, and have the characteristics of bonded abrasive grains and loose abrasive grains.
Zhao Xuefeng   +5 more
doaj   +1 more source

Dynamic Characteristics Study of Elastic Ring Squeeze Film Damper with Rigid–Elastic–Oil Coupled Model

open access: yesLubricants, 2023
Due to the coupling of the damper journal with the elastic ring and oil film, the elastic ring squeeze film damper (ERSFD) shows better dynamic performance in comparison with the traditional squeeze film damper (SFD). Therefore, a novel rigid–elastic–oil
Yan Li, Haisheng Yang, Sier Deng
doaj   +1 more source

Experimental Determination of the Elastic-Viscous Characteristics of Elastic Ropes

open access: yesProcedia Engineering, 2015
Abstract The conducted analytical, numerical and experimental studies for waiving of the elastic-viscous characteristics of elastic ropes are presented in the current report. The analytical studies are related to the creation of a dynamic and mathematical model of a vibrating system, supported by such ropes.
Pavlov, Peter, Evlogiev, Daniel
openaire   +1 more source

Analysis of vibration and sound characteristics of fluid conveying pipeline considering the effect of acoustic-solid coupling

open access: yesZhongguo Jianchuan Yanjiu, 2021
ObjectivesIn order to accurately grasp the vibration and sound characteristics of pipelines, a numerical simulation is carried out.Methods Based on the theory of acoustic-solid coupling, a numerical model of a pipeline is established.
Dejin CHEN   +4 more
doaj   +1 more source

Internally stressed polymeric composite/metal cylinders: Manufacturing, testing and quality verifying by simplified procedure [PDF]

open access: yesScientific Technical Review, 2017
In this paper the details about manufacturing of multilayer cylinders consisting of metal liner (obtained by standard machining procedures) and polymeric composite material (produced by filament winding technology) are presented. For multilayer cylinders
Radulović Jovan, Žegarac Nikša
doaj  

Two cosine wave elastic-plastic contact model

open access: yesScience Progress, 2020
Based on Hertz elastic contact theory, the contact mechanics model of two cosine wave is established. The mechanical characteristics of the model in the elastic, elastic-plastic, and plastic stages were studied.
Tieneng Guo   +4 more
doaj   +1 more source

Permeability and dynamic elastic moduli of controlled porosity ultra-precision aerostatic structures [PDF]

open access: yes, 2014
Porous ceramic aerostatic bearings enable precise and smooth motion and improved stiffness compared with widely used orifice restrictor bearings. However, the processing techniques so far used are too complex or rely in lowering the sintering temperature
Corbett, John   +2 more
core   +1 more source

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