Căutare 1995-2015 după Data publicării
Afișează articolele 241-260 of 326
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The Parametrical Free Vibrations of Elastic Systems, the Analytical Exact Solutions
(Universitatea "Dunărea de Jos" din Galați, 2012)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 ... -
Decizioan support system in the Make to Order Manufacturing System
(Universitatea "Dunărea de Jos" din Galați, 2012)Current methods for estimating the cost and time are based on decomposing the product into elements, followed by cost estimation of each element and summing of the other costs. As element, we can consider a product ... -
Performance and Evaluation of Make-To-Order Manufacturing System
(Universitatea "Dunărea de Jos" din Galați, 2012)The system environment provides on-line data on the actions undertaken which, properly analyzed and correlated, will further generate solutions in order to develop said system and make it competitive. The paper aims, ... -
Shear Stresses in Beams with Variable Cross Section, Subjected to Non-Uniform Bending
(Universitatea "Dunărea de Jos" din Galați, 2012)The goal of this paper is to present a generalization of the Juravski formula (appropriate for the beams with constant cross section, subjected to non-uniform bending), for the beams with variable cross section. In the ... -
Aspects Regarding the Study of a Vibratory Device Which Acts a Medical Apparatus
(Universitatea "Dunărea de Jos" din Galați, 2012-05-01)The paper studies, from the electromechanical point of view, a medical apparatus designed for spine treatment by vibrations. The differential equations of motion of the system have been obtained by using Lagrange equations ... -
Modeling the Dynamic Behavior of the Supercharger Units of Supercharged Diesel Engines
(Universitatea "Dunărea de Jos" din Galați, 2013)The paper preseflts the sintulation of the dynamic behavior of the supe.rcharger group with free rotatiott, using diJfere,tial equatiotts. The model is based on working knowledge of static characteiistics of the supercharge ... -
Econometric Control of the Manufacturing Machines
(Universitatea "Dunărea de Jos" din Galați, 2013-05-01)This paper presents a method of econometric modelling of the manufacturing machines which is based on the machine operation monitoring, the collected data storing and an analytical model building meant to describe the ... -
An Analysis of Vibration Transmission to Handlers Trucks
(Universitatea "Dunărea de Jos" din Galați, 2013-05-01)During movement of vehicles, drivers are subjected to vibrations transmitted by the engine, road irregularities, etc. They are extremely harmful for drivers and passengers. In this paper were studied and measured the ... -
Acoustic and Parametric Studies of the Experimental Radial Sonic Generator
(Universitatea "Dunărea de Jos" din Galați, 2013-05-01)In this paper the parameters of the acoustic field were studied experimentally,along with the frequency produced by the generator and the circular diagram of the generator’s acoustic emission, the influence of the nozzle’s ... -
An Exact Method for Analysis of Kinematics for Mechanisms by Using Vectors Which Form Closed Polygons
(Universitatea "Dunărea de Jos" din Galați, 2013-05-01)Construction machinery equipments are complex, with a high degree of mobility. Their operation is done with groups of hydraulic cylinders equal in number with the mobility. This paper presents an exact calculation, which ... -
Considerations on the Application of the Principles of Computer-Aided Design to Sprinkler Irrigation Systems
(Universitatea "Dunărea de Jos" din Galați, 2013-05-01)This paper aims to demonstrate the successful applicability of the general principles of the computer- aided design to the sprinkler irrigation systems. In other words there were applied commands and traditional design ... -
Considerations Regarding Parameters Dependencies of Reinforced Concrete Share Equipment Types for Buildings Demolition
(Universitatea "Dunărea de Jos" din Galați, 2013-05-01)The models of demolishing jaws and pulverizers that are already on the market give us the necessary information for the development of a research program regarding the optimum choice of the necessary machinery in demolishing ... -
Influence on Energy Efficiency Oof Mechanisms Operated With Hydraulic Cylinders
(Universitatea "Dunărea de Jos" din Galați, 2013-05-01)During the operation of mechanisms operated by hydraulic cylinders significant energy losses occur. They is due to the loss of flow, pressure and friction losses that occur in the system. This paper highlights the connection ... -
Comparative Study of the Commands for "Pattern" Duplicates with Miscellaneous Design Software
(Universitatea "Dunărea de Jos" din Galați, 2013-05-01)The paper aims to present a comparative study of the multiplication command of "Pattern" type or its equivalent that is found in the following design software packages: Mechanical Desktop 6 and Autodesk Inventor 2011. ... -
Product Time and Cost in Manufacturing System-Market Relationship
(Universitatea "Dunărea de Jos" din Galați, 2013-05-01)This paper presents a product time and cost estimation method taking into account the market dynamics and manufacturing system competitiveness. The method is based on the behavioral modeling using on-line unsupervised ... -
Application of Knowledge for the Maintenance of The Enterprise
(Universitatea "Dunărea de Jos" din Galați, 2013-05-01)In the paper we aim to offer a strategic vision of knowledge management (KM) that takes into account the synergy between technological and behavioral issues so necessary for survival in the current economic context. In ... -
Method Algorithm for Order Acceptance in Make-to-Order Manufacturing
(Universitatea "Dunărea de Jos" din Galați, 2013-05-01)In practice, decisions on order acceptance and on production planning are often made separately. Sales department is responsible for accepting orders, while production department is in charge of production planning for ... -
Study of The Palette-Obstacle Impact for a Concrete Mixer
(Universitatea "Dunărea de Jos" din Galați, 2013-05-01)In this paper the numerical simulation of the concrete mixer was developed in SimMechanics, a toolbox for Matlab environment. The virtual model for mixing equipment simulation has been computed to estimate the increase ... -
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 ... -
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 ...