Scientific papers - Annals of "Dunarea de Jos" University of Galati - Analele științifice ale Universității "Dunărea de Jos" din Galați: Recent submissions
Afișează articolele 881-900 of 1845
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Analysis of the Anti-Seismic Passive Isolation System Based on the Virtual Prototyping
(Universitatea "Dunărea de Jos" din Galați, 2004)This work propose a new onset for dynamic behaviour analysis of the passive anti-seismic and/or anti-vibrational elastic elements and systems. The basics of this new approach are constituted by the virtual prototyping ... -
Autolisp & DCL Method for Automatic Technological Design
(Universitatea "Dunărea de Jos" din Galați, 2004)The work has as purpose to present the general principles of working with the technological processors in designing the casting technologies and to put into evidence the advantages of this designing method. As examples, the ... -
A Solution to a Deflection Beam Problem
(Universitatea "Dunărea de Jos" din Galați, 2004)The present paper shows how the minimal total potential energy principle it is used for elastic systems in the case of the determination of the linearelastic displacements which determines the beams bending. Qualitative aspects ... -
The Model of the Forging Hammers Like System with three Degree of Freedom
(Universitatea "Dunărea de Jos" din Galați, 2004)Forging hammers cause very high vibration levels, so vibration control is advisablein nearly all cases. For this reason, in present exist recearch with the object of to decrease and eliminate the shocks and vibration ... -
Mathematical Model for Dynamic Behaviour Analysis of the Passive Isolation Systems
(Universitatea "Dunărea de Jos" din Galați, 2004)In this paper the authors present a set of mathematical models, usable to simulate and analyse the static and dynamic behaviour aspects, both for the passive anti-vibrational and anti-seismical systems, and for all ... -
The Technological Resource of Digging and Transport Heavy Equipmens Used in Road Costructions
(Universitatea "Dunărea de Jos" din Galați, 2004)For it can be applied the efficiency analysis of a mecanical system , on the basis of probabilistic transform and correlation methods , in the case of industrial tractors which are working in aggregate with different ... -
Dynamic Analysis of Electro-Hydrodynamic Vibratory Equipment Using Virtual Prototyping Technique
(Universitatea "dunărea de Jos" din Galați, 2004)In this paper the authors analyse the functional behaviour of an electrohydrodynamic vibratory equipment, that could be used to vibro-driving the piles into the powerless soils, to drive a demolition hammer, a.s.o. ... -
Hydraulic Plant with Energy Inertia Recuperator for Single Bucket Excavator
(Universitatea "Dunărea de Jos" din Galați, 2004)This paper analyse the driving solutions for hydraulic single bucket excavators, by the point of view of the energy consumptionon the technological working cycle. It is presented a solution of accumulation and re-circulate ... -
Elastic System Designed for Base Insulation Against Dynamic Action of Vibrations and Seism
(Universitatea "Dunărea de Jos" din Galați, 2004)The approach regarding building base insulation puts into evidence the possibility to evaluate the antiseismic insulation degree in a direction defined using supporting elastic systems having various geometry, structure ... -
Dynamics of Hip Artificial Joints Wear
(Universitatea ”Dunărea de Jos” din Galați, 2008)In the present paper the authors try to evaluate, based on the results obtained from experimental and numerical previous studies, the wear evolution in the components of a Total Hip Prosthesis (THP), during the service ... -
Contact Model for a Rough Surface
(Universitatea ”Dunărea de Jos” din Galați, 2008)The paper presents a model for the determination of the contact characteristics, pressure distribution and subsurface stress field at the contact cylinder- plane. The first part of the paper presents the geometrical models ... -
Vegetal Oils as Lubricating Materials
(Universitatea ”Dunărea de Jos” din Galați, 2008)The success of vegetal oils is related to their biodegradability and reduced toxicity but a wide use is limited by their insufficient stability in time. Biodegradable oils have ecological advantages, being comparable or ... -
Seizure of a High-Speed Three-Wave Journal Bearing
(Universitatea ”Dunărea de Jos” din Galați, 2008)This paper is focused on the geometry and operating parameters of the bearing experimentally studied at NASA Glenn Research Center by F. Dimofte. It presents two simple thermoelastohydrodynamic (TEHD) models for two typical ... -
Wear Behaviour of the AL7175 Alloy under Different Bulk Stress States
(Universitatea ”Dunărea de Jos” din Galați, 2008)In what concerns the stresses involved in the process, most wear tests (namely those in the pin on disc and the pin on plate configurations) are usually solely concerned with the stress state in the contact originated by ... -
Behaviour of a Hydrodynamic Journal Bearing: Torque Measurement During Start-Up
(Universitatea ”Dunărea de Jos” din Galați, 2008)The start-up friction coefficient in hydrodynamic bearings, used by engineers in the design of bearings, is most often issued from an approximation. Several studies can be found in the literature on this topic but most of ... -
Electrochemical and Mechanical Changes on Fatigue Corrosion Damaged Surfaces
(Universitatea ”Dunărea de Jos” din Galați, 2008)The paper presents some surfaces changes aspects in fatigue corrosion damage based on electrochemical, mechanical profilometry and microscopically analyze of cylindrical and plate steel specimens. The researches have ... -
Analysis of Gear Quality Criteria and Performance of Curved Face width Spur Gears
(Universitatea ”Dunărea de Jos” din Galați, 2008)For plastic gears, developments in composites and tooth geometry are essential for their selection in power transmissions. In order to enhance the transmissible power level of the plastic spur gears, an arc-shaped tooth ... -
Problèmes d'interprétation en ce qui concerne l'applicabilité de la loi commerciale en matière des contracts commerciaux
(Universitatea ,,Dunărea de Jos" din Galați, 2008-01)Les commerçants, pour éviter de tolérer le risque de l’érosion de la monnaie nationale à cause de la rate de l’inflation, surtout au cas du commerce extérieur, prévoient des clauses de protection contre le risque des devises ... -
Prix de transfer et l'accord de prix á l'avance dans la législation fiscale roumaine
(Universitatea ,,Dunărea de Jos" din Galați, 2008-01)Dans cette étude, nous analyserons d’une part, la définition du prix de transfert, la définition des personnes affiliées, les méthodes d’estimation pour les transactions qui ont lieu entre les personnes affiliées (à ...
