Results 31 to 40 of about 10,903 (164)

Effect of sample torsional stiffness on resonant column test results

open access: yes, 2007
A number of resonant column tests were conducted in torsion on aluminium cylindrical bars. By changing the length to diameter ratio of these specimens, the resonant frequency was varied between 52 and 332 Hz.
Kumar, Jyant   +2 more
core   +1 more source

Experimental study on dynamic shear modulus and damping ratio of calcareous sands in the South China Sea

open access: yesYantu gongcheng xuebao, 2019
The dynamic shear modulus and damping ratio are two important parameters for the dynamic stability analysis of geotechnical structures and offshore sites.
LIU Xin 1, LI Sa 1, LIU Xiao-long 2, CHEN Wen-wei 2
doaj   +1 more source

Evaluating use of resonant column in flexural mode for dynamic characterization of Bangalore sand

open access: yes, 2016
The resonant column method is a well-established medium-frequency wave propagation technique for the dynamic characterization of soils. This study presents an evaluation of Young?s modulus of a quartzitic sand derived from flexural resonant column tests.
Senetakis, K., Madhusudhan, B.N.
core   +1 more source

Modeling the Stiffening Behavior of Sand Subjected to Dynamic Loading

open access: yesGeosciences
In geotechnical engineering, dynamic soil models are used to predict soil behavior under different loading conditions. This is crucial for many dynamic geotechnical problems related to earthquakes, train loading and machine foundation design. Researchers
Majd Ahmad, Richard Ray
doaj   +1 more source

Hydrodynamic Investigation on a Land-Fixed OWC Wave Energy Device under Irregular Waves

open access: yesApplied Sciences, 2022
The hydrodynamic response of a land-based oscillating water column (OWC) wave energy converter under various irregular wave conditions is investigated numerically. Based on the potential flow theory, a two-dimensional fully nonlinear numerical wave flume
Zhimin Zhou   +4 more
doaj   +1 more source

Benchmarking Conventional Machine Learning Models for Dynamic Soil Property Prediction

open access: yesBuildings
Reliable estimates of soil stiffness and energy dissipation are essential for dynamic-response design. This study benchmarks machine learning models for predicting shear modulus (G) and damping ratio (D) using 2738 resonant-column measurements.
Abdalla Almarzooqi   +3 more
doaj   +1 more source

The Evaluation of the Initial Shear Modulus of Selected Cohesive Soils

open access: yesStudia Geotechnica et Mechanica, 2015
The paper concerns the evaluation of the initial stiffness of selected cohesive soils based on laboratory tests. The research materials used in this study were clayey soils taken from the area of the road embankment No.
Gabryś Katarzyna, Szymański Alojzy
doaj   +1 more source

Correction of Young's Modulus Calculation in the Flexural Mode of Resonant Column Test

open access: yes, 2022
The resonant column test includes torsional and flexural modes that can be used to obtain reduction curves for the shear modulus and Young’s modulus of the soil, respectively.
Chi-Chin Tsai, Wei-Chun Lin
core  

Numerical prediction of the natural frequency of an Oscillating Water Column operating under resonant conditions [PDF]

open access: yes, 2016
Among the different technologies developed in order to harness wave energy, the Oscillating Water Column devices are the most accredited for an actual diffusion.
TORRESI, Marco   +9 more
core   +1 more source

Resonance in a Cone-Topped Tube

open access: yesInternational Scholastic Journal of Science, 2011
The relationship between ratio of the upper opening diameter of a cone-topped cylinder to the cylinder diameter,and the ratio of the length of the air column to resonant period was examined. Plastic cones with upper openings ranging from 1.3 cm to 3.6 cm
Angus Cheng-Huan Chia   +1 more
doaj  

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