Facultad Regional La Plata: Materiales subidos recientemente
Mostrando ítems 501-520 de 723
-
Effect of particle shape and fragmentation on the response of particle dampers
(SAGE Publications, 2014)A particle damper (PD) is a device that can attenuate mechanical vibrations thanks to the dissipative collisions between grains contained in a cavity attached to the vibrating structure. It has been recently suggested that, ... -
Structure of force networks in tapped particulate systems of disks and pentagons I Clusters and loops
(American Physical Society, 2016)The force network of a granular assembly, defined by the contact network and the corresponding contact forces, carries valuable information about the state of the packing. Simple analysis of these networks based on the ... -
A differential equation for the flow rate during silo discharge Beyond the Beverloo rule
(EPJ Web of Conferences, 2017)We present a differential equation for the flow rate of granular materials during the discharge of a silo. This is based in the energy balance of the variable mass system in contrast with the traditional derivations based ... -
Wang Landau algorithm for entropic sampling of arch based microstates in the volume ensemble of static granular packings
(Papers in Physics, 2015)We implement the Wang-Landau algorithm to sample with equal probabilities the static configurations of a model granular system. The "non-interacting rigid arch model" used is based on the description of static configurations ... -
Exact predictions from Edwards ensemble vs realistic simulations of tapped narrow two dimensional granular columns
(Journal of Statistical Mechanics: Theory and Experiment, 2013)We simulate, via a discrete element method, the tapping of a narrow column of disks under gravity. For frictionless disks, this system has a simple analytical expression for the density of states in the Edwards volume ... -
Effect of grain shape on the jamming of two dimensional silos
(EPJ Web of Conferences, 2017)We present discrete element method simulations of the discharge of silos in two dimensions. We study the effect of the grain shape on the clogging of small apertures, considering regular polygons and disks of equal mass. ... -
Flow rate of polygonal grains through a bottleneck Interplay between shape and size
(Papers in Physics, 2015)We report two-dimensional simulations of circular and polygonal grains passing through an aperture at the bottom of a silo. The mass flow rate for regular polygons is lower than for disks\red{,} as observed by other authors. ... -
Relevance of system size to the steady state properties of tapped granular systems
(American Physical Society, 2015)We investigate the steady-state packing fraction ϕ and force moment tensor Σ of quasi-two-dimensional granular columns subjected to tapping. Systems of different height h and width L are considered. We find that ϕ and Σ, ... -
Ergodic nonergodic transition in tapped granular systems; The role of persistent contacts
(Papers in Physics, 2016)Static granular packs have been studied in the last three decades in the frame of a modi ed equilibrium statistical mechanics that assumes ergodicity as a basic postulate. The canonical example on which this framework is ... -
First order phase transition during displacement of amphiphilic biomacromolecules from interfaces by surfactant molecules
(Journal of Physics: Condensed Matter, 2014)The adsorption of surfactants onto a hydrophobic interface, already laden with a fixed number of polymers, is studied using the self consistent field (SCF) calculation method of Scheutjens and Fleer. For polymers having ... -
Tapped granular packings described as complex networks
(Taylor and Francis, 2013)We characterize the structure of simulated two-dimensional granular packings using con- cepts from complex networks theory. The packings are generated by a simulated tapping protocol, which allows us to obtain states in ... -
Dynamic transition in conveyor belt driven granular flow
(Elsevier, 2015)We consider the flow of disks of diameter d driven by a conveyor belt of dynamic friction coefficient μ through an aperture on a flat barrier. The flow rate presents two distinct regimes. At low belt velocities v the flow ... -
Planta de tratamiento residuos patogénicos Villa Elvira
(2017)El propósito de este trabajo es realizar la evaluación de impacto ambiental para estudiar y conocer la factibilidad de instalación de una planta de tratamiento de residuos patogénicos mediante un sistema de autoclave. La ... -
Construcción de Relleno Sanitario para la disposición final de los residuos sólidos urbanos en la ciudad de Berisso
(2018)El presente Estudio de Impacto Ambiental se realizó con el objeto principal de identificar y evaluar las modificaciones potenciales realizadas sobre el medio ambiente físico, biológico y socio-económico que produciría la ... -
Taller de producciones gráficas
(2018-02)El objetivo del presente trabajo es poder evaluar la asimilación de los conceptos adquiridos durante la carrera en un caso práctico y real similar al que se podría presentar en el desarrollo como profesionales del área de ... -
Sistemas de admisión y escape
(2017)Como primera medida se puede definir al sistema de admisión y escape como el conjunto de los elementos recorridos por los gases a la entrada o a la salida de los cilindros, donde se van a producir diferentes fenómenos ... -
Intervención del ingeniero laboral en el sector productivo en la fabricación de caños premoldeados de cemento con alma de acero
(2017-12)El presente trabajo tiene como finalidad la aplicación de las normativas y reglamentaciones vigentes nacionales y provinciales y el análisis de las tareas desarrolladas en la actividad, desde el punto de vista de la higiene ... -
Desarrollo de un instrumento de relevamiento para determinar en qué grado las MiPyMEs exitosas utilizan implícitamente estrategia basada en los clientes, en la empresa y en los competidores
(COINI, 2014)Sin entrar en los motivos que generan un entorno económico, político, social, tecnológico, que cambia y/o se transforma a una velocidad cada vez mayor, lo cierto es que los administradores de las organizaciones y particularmente ... -
Proyecto Planta Termosolar 50 MW
(2017-10)El objetivo de este proyecto es diseñar una central de generación de energía eléctrica de 50 MW, a base de concentradores solares parabólicos en la Provincia de San Juan. El principio de funcionamiento es la utilización ... -
On and off dynamics of a creeping frictional system
(Springer, 2014)We report on the dynamics of a model frictional system submitted to minute external perturbations. The system consists of a chain of sliders connected through elastic springs that rest on an incline. By introducing cyclic ...