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Hallazgo de un fenómeno de segundo orden dependiente de la presion, en el flujo de un fluido laminar
(Universidad de Los Andes, 2009)
Coupled axial/torsional vibrations of drill-strings by means of non-linear model
(Pergamon-Elsevier Science Ltd, 2007-07)
In the present work a geometrically non-linear model is presented to study the coupling of axial and torsional vibrations on a drill-string, which is described as a vertical slender beam under axial rotation. It is known ...
Intruder in a two-dimensional granular system: Effects of dynamic and static basal friction on stick-slip and clogging dynamics
(American Physical Society, 2020-01-31)
We present simulation results for an intruder pulled through a two-dimensional granular system by a spring using a model designed to mimic the experiments described by Kozlowski et al. [Phys. Rev. E 100, 032905 ...
Energy dissipation by friction for sliding blocks subjected to near-fault seismic base motion
(Techno-Press, 2021-05)
The objective of this study was to determine friction ratios that maximize energy dissipation on a seismic damper. The aforementioned friction damper basically consists of mass blocks that are able to slide on a flat ...
Modelos continuos de sondas de perforación para la industria petrolera: Análisis de enfoques y su discretizaciónContinuous models for drill-strings of the oil industry: analysis of approaches and discretization schemes
(Universitat Politècnica de Catalunya, 2009-12)
En este trabajo se presenta un modelo continuo que, por discretizacion mediante el metodo de elementosfinitos, se emplea para analizar las vibraciones acopladas extensionales, flexionales y torsionales de unasonda de ...
Fossil earthquake evidenced by the silicified tectonic breccia of the cabo frio area, state of Rio de Janeiro, Brazil, and its bearings on the genesis of stick-slip fault movement and the associated amagmatic hydrothermalismTerremoto fóssil evidenciado pela brecha tectônica silicificada da área de Cabo Frio, RJ, e sua relação com a gênese do movimento intermitente da falha e o hidrotermalismo amagmático associado
(Centro de Ciências Matemáticas e da Natureza, Instituto de Geociências, Universidade Feder, 2012)
Dynamics of a grain-scale intruder in a two-dimensional granular medium with and without basal friction
(American Physical Society, 2019-09-25)
We report on a series of experiments in which a grain-sized intruder is pushed by a spring through a two-dimensional granular material composed of photoelastic disks in a Couette geometry. We study the intruder dynamics ...
Frictional dynamics of viscoelastic solids driven on a rough surface
(American Physical Society, 2015-07)
We study the effect of viscoelastic dynamics on the frictional properties of a (mean-field) spring-block system pulled on a rough surface by an external drive. When the drive moves at constant velocity V, two dynamical ...