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Afișează articolele 61-80 of 5652
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Structural Requirements of Bituminous Paving Mixtures
(Universitatea "Dunărea de Jos" din Galați, 2002)In this work, the autors present some of the principal issues and challenges associated with the design and production of bituminous mixtures that can meet the ever-increasing structural needs of modern pavements. -
The Dynamic Study of the Crane "MT-40" in the Process of Gyrations
(Universitatea "Dunărea de Jos" din Galați, 2002)This work proposes the determination of the dynamic behavior of a tower crane in the process of gyration in sight of a move burdens in the most disadvantageous conditions and namely: in the crane’ s hook it is a solid body ... -
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 ... -
Mathematical Model for Frequency-Dependent soil Propagation Analysis
(Universitatea "Dunărea de Jos" din Galați, 2002)Vibration analyses of advanced technology facilities typically must consider frequency as well as amplitude of vibration. A soil propagation model is proposed which will allow the use of site-specific, measurable, frequency ... -
Phisycal and Mathematical Model Forvibratory Driving Process Analysis
(Universitatea "Dunărea de jos" din Galați, 2002)Vibratory driving of pile is one of the technologies used for powerless basement soil deep consolidation. This process consist by favouring the pile penetration in soil, whereupon when vibrations using. Experimentally, was ... -
Installation for Centrifugal Casting of Bimetallic Jacks
(Universitatea "Dunărea de Jos" din Galați, 2002)This issue presents an bronze casting technology of steel jack by centrifuging as well as it’s installation. We try to realize a machine by date theme for mechanization of technological operation. The constructive solution ... -
Robot Type Manipulator for Serving of a Bolts Hardening System Outline
(Universitatea "Dunărea de Jos" din Galați, 2002)The paper work refers to a flexible manufacturing cell where the bolts hardening system within a relatively wide range of dimensions is completely automatic. For this purpose, a robot type manipulator serving an induction ... -
Considerations Upon Breaking Strength of Nodular Cast Iron Under Plastic Deformation
(Universitatea "Dunărea de Jos" din Galați, 2002)The work aims to demonstrate the existence of a mathematics connection between breaking strength and degree of plastic deformation in case of nodular cast iron. Research made along time starting 1932-1934 until now, ... -
The calculation of Pressure Forces Resultant About Rotor Bearings of Volumetrical Pumps and Motors with Radial Palettes
(Universitatea "Dunărea de Jos" din Galați, 2002)The objective of this paper refers to the presentation the calculation of pressure forces resultant about the palettes and the lateral rotor surface of volumic pumps and motors with radial palettes. This calculation is ... -
Response Behaves of Earthmoving Vehicle Where the Slip Ratio are Variation Linear
(Universitatea "Dunărea de Jos" din Galați, 2002)In this paper, the autor conceptualize the loader equations of motion for dynamic analysis of traction system where the slip ratio are variation linear. The wheel loader simulation model was formulated in terms of ... -
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, ... -
Detecting the Liquid core in Continuous Casting Slabs by Load Torque Estimation in Unbending Zone
("Dunarea de Jos" University of Galati, 2002)The development in continuous casting process has been strongly dominated by the demands of quality improvement and reduced costs for steel products in recent years. To achieve these goals consideration has been given ... -
The Behavior Of Asymmetric Frontal Couplings With Permanent Magnets In Magnetic Powder And High Temperature Environments
("Dunarea de Jos" University of Galati, 2002)The main purpose of this paper is the comparative analysis of the behavior of frontal couplings with Nd-Fe-B permanent magnets in difficult environments, specific to metallurgy – such as environments with magnetic powders ... -
Real Time wind Turbine Simulator Based on Frequency Controlled Servomotor
("Dunarea de Jos" University of Galati, 2002)This paper is a contribution to the development of a real time wind turbine simulator. The simulator is designed to generate wind power on its shaft, and provide the static and dynamic characteristics of a given turbine. ... -
Numerical Treatment of some Complex Dynamic Processes of Saturated Induction Machine
("Dunarea de Jos" University of Galati, 2002)Three variants for the mathematical models of the saturated induction machine (the exact one, the classical one and the simplified one) are used for the analysis of the reversal process combined with one short mechanical ... -
Modeling, Identification and simulation of a Lighting Control System
("Dunarea de Jos" University of Galati, 2002)This paper presents the results of the first phase in the design of a control system for closed-loop regulation of the light amount in office-building rooms. This project is a joint development of Ghent University and ... -
Considerations on the Effect of Plastic Deformation Over the Magnetic Behavior of Soft Ferromagnetic alloy FE-3%SI NO
(2002)The paper synthetically presents the results obtained over the degradation of magnetic properties of soft ferromagnetic sheets Fe-3%Si NO required mechanically in plastic deformation area. Chronologically, the evolution ... -
Influence of High Performance Voltage Converters Supply Upon the Induction Motors Behaviour
("Dunarea de Jos" University of Galati, 2002)The induction motors supply by converters leads to a distorted regime accompanied by some parasite torques and some supplementary losses. These aspects are emphasized further on because their quantitative determinations ... -
Energetic Optimal Control of Adjustable Drive Systems
("Dunareade Jos" University of Galati, 2002)In the paper is developed a new control strategy for the adjustable speed drives. The strategy consists in the energetic optimal control of the dynamic regimes as starting, stopping and reversing. The main developed ... -
Simple Approach for Induction Motor Control Using Reconfigurable Hardware
("Dunarea de Jos" University of Galati, 2002)The paper deals with rotor-field-oriented vector control structures for the induction motor drives fed by the so-called tandem frequency converter. It is composed of two different types of DC-link converters connected ...
