Results 21 to 30 of about 10,903 (164)

Resonant column testing: The inherent counter EMF effect

open access: yes, 2003
The standard magnet-coil driving system in resonant column devices provides the required cyclic excitation; however, it inherently produces a counter electromotive force that opposes the motion. In this study, the resonant column is modeled as an electro-
Cascante, Giovanni   +2 more
core   +1 more source

Identification on rock and soil parameters for vibro-cutting rock by disc cutter based on fuzzy radial basis function neural network

open access: yesMATEC Web of Conferences, 2018
A single-POF model of disc cutter with rock and soil has been established according to the dynamical feature and vibration mechanism of disc cutter vibro-cutting rock to solve problem of self-adaption vibro-cutting rock for disc cutter, and ...
Chen Qiang, Lang Jianke
doaj   +1 more source

Resonant Column Tests and Nonlinear Elasticity in Simulated Rocks

open access: yes, 2018
Rocks are generally regarded as linearly elastic even though the manifestations of nonlinearity are prominent. The variations of elastic constants with varying strain levels and stress conditions, disagreement between static and dynamic moduli, etc., are
Sebastian, Resmi, Sitharam, TG
core   +1 more source

Experimental Study on Damping Ratio Characteristics of Loose Silty Fine Sand at Different Saturations [PDF]

open access: yes长江科学院院报
[Objective] Current research on the damping ratio evolution of silty fine sand under varying saturation conditions remains relatively limited, and in particular, systematic investigations revealing the mechanisms by which saturation variations influence ...
YU Song, XU Meng-bing, FENG Zhi-guo, ZHANG Jun-jie, ZHANG Guo-chao, WANG Yong
doaj   +1 more source

A study of the low-cycle fatigue failure of a galvanised steel lighting column

open access: yes, 2009
This paper presents the results of a low-cycle fatigue test on a galvanised steel lighting column. The aim of the test was to simulate the behaviour of the column undergoing large amplitude resonant vibration caused by wind.
Alexander, L.A., Wood, J.
core   +1 more source

Hydrodynamic behavior of resonant chamber of an oscillating column of water for Pacific Ocean conditions

open access: yesRevista Facultad de Ingeniería Universidad de Antioquia, 2023
Wave energy converters (WEC) may be a promising option for extracting the energy available in the sea and oceans in a clean way. The oscillating water column (OWC) is one of the most applicable and well-known WEC systems.
Juan David Parra-Quintero   +2 more
doaj   +1 more source

Modulus and Damping of Asphaltic Concrete Using the Resonant Column

open access: yes, 1980
When analyzing flexible pavements or predicting their behavior by such means as elastic-layered theory or by finite elements, it is necessary to know the parameters that govern the behavior of the pavement components. One of the most important factors to
Deen, Robert C., Allen, David L.
core   +1 more source

Resonant column tests on maximum shear modulus and damping ratio of coral sand

open access: yesYantu gongcheng xuebao, 2020
The resonant column tests on the effects of relative density and confining pressure on the maximum modulus and damping ratio of coral sand in South China Sea under small strain are performed.
LI Xiao-mei 1, WANG Fang 1, HAN Lin 2, GUAN Yun-fei 1, ZHAN Xin-jie 1
doaj   +1 more source

Small Strain Shear Modulus of the Ljubljana Marsh Soil Measured with Resonant Column and Bender Elements under Isotropic and Anisotropic Stress Conditions

open access: yesApplied Sciences
The increasing use of finite element analysis in modern infrastructure design emphasizes the importance of determining soil stiffness at small strains.
Timotej Jurček   +2 more
doaj   +1 more source

Small-Strain Dynamic Behaviours of Reconstituted Soft Clay Under Different Initial Water Contents

open access: yesApplied Sciences
High-water-content dredged slurry from port dredging requires geotechnical improvement via drainage and consolidation. The small-strain dynamic properties (shear stiffness, damping characteristics) of reconstituted and consolidated clays are critical to ...
Xinde Wang   +5 more
doaj   +1 more source

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