Căutare 1995-2015 după Titlu
Afișează articolele 244-263 of 326
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Study on a Seismic Isolation Method Suitable for an Architectural Monument
(Universitatea "Dunărea de Jos" din Galați, 2012)The research presented in this scientific paper investigates an adaptive seismic isolation system meant to protect architectural monuments structures subjected to a variety of seismic ground motions. This scientific paper ... -
A Study on Stevens' Power Law Applied on the Human Perception of a Running Vehicle Transmitted Vibrations
(Universitatea "Dunărea de Jos" din Galați, 2009)This paper studies the way humans perceive vibrations induced by a running vehicle, starting from Stevens’ Power Law. The measurable physical magnitude was the acceleration transmitted to the hand-arm system. The ... -
Study on the influence of Sonic Generator Geometry on Acoustic Parameters
(Universitatea "Dunărea de Jos" din Galați, 2010)The acoustical parameters, dimensional determination and construction of sonic generator is described in the paper. The generator’s dimensional determination and construction show that the nozzle slot, the axial resonator ... -
Study on the Influence of Ultrasound Frequency Emitted by a Sonic Generator on Water Parameters
(Universitatea "Dunărea de Jos" din Galați, 2013-10-01)The importance of ultrasound frequency radiated by the sonic generator in the evolution of water quality parameters and its variation according to the pressure level of input air are described in the paper. Also, ... -
Study on the Relationship Between Stability and Energy Efficiency of Hydraulic Excavators
(Universitatea "Dunărea de Jos" din Galați, 2014)The cycle of operation of hydraulic excavators has a series of steps in which large masses are accelerated and then braked. The presence of additional masses on the excavators improves stability but reduces energy efficiency. ... -
A Study Upon Traction Systems for Technological Machines with Auto Propulsion
(Universitatea "Dunărea de Jos" din Galați, 2003)This paperwork presents a comparison of traction systems used for heavy machines that needs to move on public roads. (construction devices, agriculture machines, etc.). Here are presented traction charts implemented on ... -
Technical-Economical Competitiveness of Food Industry
(Universitatea "Dunărea de Jos" din Galați, 2014)In the literature, different definitions of competitiveness exist. The EU Commission (2003) uses as a definition of competitiveness: the ability of an economy to provide its population with high and rising standards of ... -
Technological Design Optimization of an Industrial Centrifugal Fan
(Universitatea "Dunărea de Jos" din Galați, 2013-05-01)The paper aims to present a technological design optimization of an industrial centrifugal fan going through steps such as computer aided design CAD, simulation and analysis of elements of interest (CAE) and manufacturing ... -
Technological Optimization Process for "Differential Trunk" Component
(Universitatea "Dunărea de Jos" din Galați, 2012)This study aims to optimize the technological process of manufacturing the „differential trunk” component with NX7.5 software. Modelling the component was made in „ 3D” CAD, simulation was achieved with CAE finite element ... -
Teoretical Approach for the Control of the Make to Order Manufacturing System : Part 2
(Universitatea "Dunărea de Jos" din Galați, 2012)In practice, decisions on acceptance of order and production planning are often considered separately. Sales Department is responsible for accepting orders, while the production department in charge of production planns ... -
The 3D Assisted Design and Static Analysis of a New Type of Excavator ARM
(Universitatea "Dunărea de Jos" din Galați, 2013-10-01)The paper presents a new constructive solution of excavator arm that allows using the bucket with an increased degree of freedom The assisted design 3D permitted the optimization of execution model, checking the assembly ... -
The Analysis of the Bending Sprigs' Weight Influence on the Resonance Characteristic of the Elastical Mechanical Systems
(Universitatea "Dunărea de Jos" din Galați, 2007)The Analysis of the Bending Springs' Weight Influence on the Resonance Characteristic of the Elastical Mechanical Systems -
The Analysis of the CAM Mechanisms Using Matrix Calculations
(Universitatea "Dunărea de Jos" din Galați, 2011)The present study presents the kinematic analysis of a mechanical structure created by cam mechanism RR-CC. It was determined the position, velocity and angular acceleration of the tapped, as depending on the position ... -
The Analysis of the Dynamic Response of the Hydrostatic Driving Systems in a Closed Circuit
(Universitatea "Dunărea de Jos" din Galați, 2002)The hydrostatic actions in a closed circuit were remarked in the action of the technological equipment both for achievement of translation motions with linear hydrostatic engines with bilateral stem and for rotational ... -
The Analysis of the Torsional Springs' Inertia Influence on the Resonance Characteristic of the elastical Mechanical Systems
(Universitatea "Dunărea de Jos" din Galaţi, 2006)The study presents the phases and the final result of the physical and mathematical models' elaboration of elastic mechanical systems with one degree of freedom taking into consideration the distributed mass of the twist ... -
The Analytical Exact Solutions of Non-Linear Differential Equations Which Describe the Parametric Free Vibrations of Mechanical Systems
(Universitatea "Dunărea de Jos' din Galați, 2010)The movements of many material systems can be described by differential equations that have coefficients that depend on time. It is difficult to determine the solutions of these equations. Although many concrete problems ... -
The Approximate Analytical Solutions for the Differential Equations which Desccribe Free Vibrations of Non-Linear Mechanical Systems
(Universitatea "Dunărea de Jos' din Galați, 2006)The oscillation movement of a mechanical non-linear system is not easy to solve exactly on analytical way. The approximate solutions are based on different methods and give different values with different approximation degree. ... -
The Approximate or Exact Analytical Solutions for the Differential Equations Which Describe Parametric Free Vibrations of Mechanical Systems
(Universitatea "Dunărea de Jos" din Galați, 2013-05-01)The vibrations of many mechanical systems can be described by differential equations that have coefficients that depend on time. It is difficult to determine the approximate or exact analitical solutions of these equations. In ... -
The Behavior of Mechanical Model Wheel' S Loader
(Universitatea "Dunărea de Jos" din Galați, 2002)In this work is described a dynamical model for the tire-suspension system of wheel loader. This model is based on the subdivision of the global dynamical system into its physical components: the tire, the wheel, ... -
The Boolean Operations with CAD Systems
(Universitatea "Dunărea de Jos" din Galați, 2009)The AutoCAD software is a power computer-aided design (CAD) system that can offers all users of graphics, 2D and 3D objects representation. In this paper, we present the basic Boolean operations that allow adding, ...
