Căutare Fascicula XIV după Data publicării
Afișează articolele 21-40 of 326
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Quality Concrete - Performing Concrete Plants
(Universitatea "Dunărea de Jos' din Galați, 2003)The buildings compositions quality, as well as resistance, stability and durability imposed by the law 10/1995 depends by the quality of concrete who should fulfil the conditions imposed by the Practical Code NE 012/99. The ... -
The Dynamics Analysis of the Forced Steady-State for the Vertical Towers Chillers with Internal Axial Flow Fan
(Universitatea "dunărea de Jos" din Galați, 2003)This study presents some of the phases of the physical and mathematical models' elaboration of the vertical tower chillers with a single axial flow fan, which are used in social and civil buildings to prepare conditioning air ... -
The Wear Influence on the Working Condition
(Universitatea "Dunarea de jos' din Galaţi, 2003)During the operation, any machine, equipment, machine parts, or piece, is submitted to a wear. The evolution in time of the wear size, or, in other words, a real form for the characteristic of the wear depends on ... -
Dynamic of Industrial Tractors with THM for Construction
(Universitatea "Dunărea de Jos" din Galaţi, 2003)Traction calculus is done to determine the main parameters of the equipment’ s engine and transmission designed to achieve the performances imposed in exploitation [1, 2, 3]. One of the base problem of the traction ... -
An Original Solution for the Ground Support Mechanism of Compact Loaders
(Universitatea "Dunărea de Jos" din Galaţi, 2003)This paper presents constructional solution adoption draftworking gear, loader IC 04, assure existence every tyre, reaction non-vanishing. The evidence profitability solution suspension draft. -
Friction Coupling and Specific Phenomena
(Universitatea "Dunarea de Jos" din Galați, 2003)The present work object is to make the transitory conditions evolution evident,in coupling, by considering the friction moment which depends on angular speed. The friction moment is considered to be dependent on the relative ... -
Lifting Machinery the Efficiency Criterion
(Universitatea "Dunărea de Jos" din Galați, 2003)Using lifting and carrying machinery in various environments leads to a considerable variation of operating time and mechanical devices or metallic structure state of load. Lifting equipment is a cyclic operating device ... -
Theoretichal Considerations about the Maximum Vibration Limits for Wheel Loader Affected by the Ground Conditions
(Universitatea "Dunarea de Jos" din Galaţi, 2003)In this paper, the author make a study of vibration (vertical acceleration) into wheel loader who is affected by the ground conditions. It is known from many studies and investigations, that the drive vibrations are ... -
Mechanization and Automation of the Construction Operations
(Universitatea "Dunărea de Jos' din Galați, 2003)Modernizing operating technologies is the major goal of the construction engineering in order to reduce or eliminate manual labor. The increase of operating efficiency of the construction industry is related to the ... -
High-Performance Concretes-Behavior of Fresh Concrete
(Universitatea "Dunarea de Jos" din Galaţi, 2003)Most of the research in High-Performance Concretes (HPC) since the publication of the State-of-the-Art Report in 1990 has concentrated on increasing basic knowledge regarding HPC performance and properties rather than ... -
Precision Rectifier
(Universitatea "Dunărea de Jos" din Galaţi, 2003)Electric phenomena dependence of non electric one rises a lat of issues in design and running of electric and electronic equipments. So, this is basic problem of one of most dynamic field of measurements technique, represented ... -
Capability and Quality of the Vibratory Rollers
(Universitatea "Dunărea de Jos" din Galaţi, 2003)In this paper are presented the global criterions of performance and the classification of vibratory rollers about these criterions. -
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 ... -
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. ... -
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 ... -
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 ... -
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 ... -
Dynamic Analyze for the Chassis-Cab System Having Elastic Intermediate Link (Elastic Interface)
(Universitatea "Dunărea de Jos" din Galați, 2004)Among the machinery generating occupational diseases due to the vibrations transmitted to human body the portable hand-held construction equipment such as drill hammers and demolition hammers are classified. In order ... -
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 ...
