Scientific papers - Annals of "Dunarea de Jos" University of Galati - Analele științifice ale Universității "Dunărea de Jos" din Galați: Recent submissions
Afișează articolele 721-740 of 1845
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The Dynamic of Material Particle Movement on Vibrating 2D and 3D Modeled Sieves in CAD Systems
(Universitatea "Dunărea de Jos" din Galați, 2008)In this paper are presented aspects concerning the dynamic of material particle movement on sieves for cleaning and sorting. In the first part of the paper there is a short classification of the sieve types used for the ... -
Geometrical Shapes with CAD Systems
(Universitatea "Dunărea de Jos" din Galați, 2008)The Solid Edge software is a power computer-aided design (CAD) system of graphics for mechanical assembly, part modeling, and drawing production. In this paper, both the ability in using Solid Edge program and the ... -
A New Calculating Method of the Reaction Support Groups Used in Rotary Kiln
(Universitatea "Dunărea de Jos" din Galați, 2008)This paper presents a new analytical method for calculating the reaction of support rotary kiln, regarded as an indeterminate static problem. It is the Y -Method and equation of three displacements (using Y loading ... -
The Calculus of the Equivalent Rigidity Coefficients for the Shafts of the Elastical Systems
(Universitatea "Dunărea de Jos" din Galați, 2008)The components of the mechanical systems like machines and/or technological equipment have a certain elasticity or rigidity. Knowing the rigidity of each component is very important for the studies whose goal is to ... -
Measuring and Controlling of Noises and Vibrations Generated by Industrial Sources
(Universitatea "Dunărea de Jos" din Galați, 2008)This paper describes a methodology for measuring and control of noises and vibrations generated by industrial sources, such as: construction activities, equipments which use vibrations into working process, etc. ... -
Assessing and Controlling the Noise in Construction. Romanian and EU Legislation
(Universitatea "Dunărea de Jos" din Galați, 2008)Exposure to loud noises at work can cause irreversible hearing damage, workplace accidents and be a contributing factor to other health problems. Noise-induced hearing loss is the most common reported occupational disease ... -
Dynamic Analysis of Mechanical Systems. Calculus of the Equivalent Dynamic Forces and Torques
(Universitatea "Dunărea de Jos" din Galați, 2008)This article presents the physical and mathematical models of mechanical systems with elastical and/or rigid elements, subjected to dynamical loads: forces and torques. The aim of the study is to establish some formulas ... -
The Concept of Competitive Management for Manufacturing Systems
(Universitatea "Dunărea de Jos" din Galați, 2008)Competitiveness is a general characteristic of enterprises, ensuring their viability. In economic literature, competitiveness is particularly analyzed from an economic and managerial viewpoint, dealing with or not ... -
About the Free Parameter Vibrations of the Mechanical Systems
(Universitatea "Dunărea de Jos" din Galați, 2008)The oscillation movement of a mechanical non-linear system is not easy to solve exactly in an analytical way. The approximate solutions are based on different methods and give different values with different approximation ... -
Virtual Prototype for Simulation and Analysis of Traction Systems in Interaction with Roads
(Universitatea "Dunărea de Jos" dn Galați, 2008)This study deals with numerical simulation of an equipment with full hydrostatic driving system. Based on the clasical mathematical models - single degree of freedom and two degree of freedom models, it was developed a ... -
Characteristics of the Dissipative Hydraulic Joints
(Universitatea "Dunărea de Jos" din Galați, 2008)This paper analyses the theoretical and experimental characteristics of the hydraulic energy dissipaters used as dissipative joints for the mechanical structures subject to earthquakes, and vibrations. The paper allows ... -
Dynamic Model for Hydraulic Dissipaters
(Universitatea "Dunărea de Jos" din Galați, 2008)The paper deals with the problem of energy hydraulic dissipaters used as dissipative links for mechanical structures subjected to earthquakes, shocks and vibrations. The authors propose a mathematical model of a hydraulic ... -
Acoustic Absorption Coefficient Variationof Sound Absorbing Structures and Materials
(Universitatea "Dunărea de Jos" din Galați, 2008)The task of this work is the acoustic absorption coefficient variation study of sound absorbing structures and materials. Three construction equipments have been considered according to their different cabin design. ... -
The Impact of the Technological Equipment Vibration on the Environment
(Universitatea "Dunărea de Jos" din Galați, 2007)The shocks & vibrations generated by the operation of such tools, are conveyed to the foundation environment affecting both the near – by building safety and the comfort of the unit personnel and of the surrounding ... -
The Dynamics of the Rigid Body with Passive Hydraulics Linkages
(Universitatea "Dunărea d Jos" din Galați, 2007)The paper refers to the case of the rigid body subject to linkages materialised through linear hydraulics engines. We will settle the mathematic model of the rigid and will determine its kinetic and dynamic characteristics. ... -
The Impact of Occupational Noise on the Workers. Romanian and EU Legislation
(Universitatea "Dunărea de Jos" din Galați, 2007)Noise is most obviously a problem in industries such as manufacturing, mining and construction but it can also be an issue in a wide range of other working environments like energy, transports, call centers, schools, orchestra ... -
The Noise at Work and the Professional Diseases
(Universitatea "Dunărea de Jos" din Galați, 2007)This article describes the effects of workplace noise and outlines the main steps that should be taken to reduce and control noise at work. Exposure to noise at work can harm workers’ health. The most wellknown effect ... -
Model and Application of the Dispsersional aAnalysis for a Wear Study
(Universitatea "Dunărea de Jos" din Galaţi, 2006)This paper shows a coherent calculation model of the unifactorial dispsersional statistic analysis applied for the experimental data study obtained on samples of different volumes, drawn out from a researched statistical ... -
Specific Aspects of the Contact Wheel-Rail and the “IN SITU” Rehabilitation of Tram Rails
(Universitatea "Dunărea de Jos" din Galaţi, 2006)The rails are an important and critical part of a railway system and are exposed, during service, to high stresses of different types, frequency and orientation and also to different environmental. The tram rails are in ... -
Optimisation of the Tooth Flank Geometry for Non-Standard Spur gear
(Universitatea "Dunărea de Jos" din Galaţi, 2006)In order to increase the transmissible power level of the plastic spur gears, a non-standard tooth is designed, with a variable geometry along the gear facewidth. The variation of the tooth flank geometry, generated by ...
