Căutare 1995-2015 după Data publicării
Afișează articolele 261-280 of 326
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3d Modeling and Static Analysis of a Bucket Crusher Equipment Attached to the Excavator Arm
(Universitatea "Dunărea de Jos" din Galați, 2013-05-01)This paper aims to show the 3D modeling of a bucket crusher equipment attachable to the excavator arm. The static analysis of this type of crusher jaws allowed a correct designing for a better reliability. This analysis ... -
Some Physical Changes in Extra Virgin Rapeseed Oil after the Process
(Universitatea "Dunărea de Jos" din Galaţi, 2013-10-01)The aim of this study is the viscosity’s evolution depending on the temperature and the shear rate and the analysis at the transmittance spectra of the oxidized rapeseed oil. Rapeseed oil was oxidized at the temperatures ... -
Spectrophotometric and Rheological Studies on Oxidized Soybean Oils
(Universitatea "Dunărea de Jos" din Galaţi, 2013-10-01)This paper presents a rheological and spectrophotometric study of oxidized and nonoxidized soybean oils at 100, 110 and 120°C temperatures. The oxidation periods of time were 5 hours and 10 hours. Changes of the oxidized ... -
The Dinamic Response Analysis of the Viaduct Supported on Anti Seismic Systems with Selective Links as Viscoelastic and Dry Friction Type
(Universitatea "Dunărea de Jos" din Galați, 2013-10-01)This paper analyzes, on the theoretical level, the dynamic response of a viaduct section, dynamically isolated by systems with a selective type of links with viscoelastic and with dry friction. Evaluation of kinematic ... -
Nonlinear Approaches Regarding Mechanical and Thermal Behaviour of Visco-Elastic Vibration on Isolators
(Un, 2013-10-01)Thermal effects inside the vibration elastomeric isolators have usually been neglected and this aspect can leads to certain differences between simulations and experiments. Continuous damping during the working cycle ... -
Resistance Study of the Shell of a Wind Turbine Blade
(Universitatea "Dunărea de Jos" din Galați, 2013-10-01)The paper aims at presening a resistance study on the shell of a wind turbine blade and highlights the main forces that act on its surface. Femap program with finite element analysis was used to simulate a linear static ... -
A Method to Increase the Accuracy Of the Mathematical Model Used to Hydraulically Actuated Mechanical Systems
(Universitatea "Dunărea de Jos" din Galați, 2013-10-01)In order to achieve mathematical models describing hydraulically driven mechanical systems are taken into account both consumer behavior and characteristics of power sources and hydraulic circuits. The variable resistance ... -
Considerations on the Simplified Numerical Simulation of the Bus Lateral Rollover
(Universitatea "Dunărea de Jos" din Galați, 2013-10-01)The numerical simulation using finite element method, of the behavior of buses in case of lateral rollover, requires significant hardware resources and can lead to the numerical models whose resolution may take prohibitively ... -
Consideration on 2D Constrains for Drawings Made with Existing Design Software
(Universitatea "Dunărea de Jos" din Galați, 2013-10-01)This paper aims at present the author's personal reasons on the set of dimensional constraints existing in each design software, that are designed to achieve certain parametric sketches. In general, constrained ... -
Considerations on Design Controls Intended to Achieve Thin Walled Bodies
(Universitatea "Dunărea de Jos" din Galați, 2013-10-01)This paper aims at presenting a comparative study of the "Shell" command / control which generates bodies with thin walls or some equivalent commands to be found in the following design software packages: Mechanical ... -
3D Modeling of a New Type of Vibratory Roller
(Universitatea "Dunărea de Jos" din Galați, 2013-10-01)This paper presents the design optimization of a new type of roller vibration with amplitudes varying with software NX 7.5. The 3D modeling has been developed optimizing constructive solution, minimizing implementation ... -
The 3D Assisted Design and Static Analysis of a New Type of Excavator ARM
(Universitatea "Dunărea de Jos" din Galați, 2013-10-01)The paper presents a new constructive solution of excavator arm that allows using the bucket with an increased degree of freedom The assisted design 3D permitted the optimization of execution model, checking the assembly ... -
Comparative Modal Analysis of a Rigid Structure with Conservative Insulation
(Universitatea "Dunărea de Jos" din Galaţi, 2013-10-01)This paper deals with dynamics of compact rigid structures with elastic insulation and subjected to various vibratory, shock or seismic actions. It was supposed a simple rigid model with six degrees of freedom, affected ... -
Dynamic Simulation of the Vibrator Roller - Terrain Interaction Using an Elastoplastic Approach
(Universitatea "Dunărea de Jos" din Galați, 2013-10-01)This study deals with the problematic of deep interaction between the terrain and the vibratory drum at the technological process of dynamic compaction. In this paper is briefly presented a theoretical approach of this ... -
On Dynamics of Bucket Wheel Excavators with Radial Digging
(Universitatea "Dunărea de Jos" din Galați, 2013-10-01)The paper presents the influence of some structural and operating parameters on external load characteristics caused by resistances to reclaiming at bucket wheel in the radial digging process. -
Experimental Dynamics of a Bridge Deck Isolated with Rolling Pendulum System (RPS)
(Universitatea "Dunărea de Jos" din Galaţi, 2013-10-01)Base isolation of building structures represents the most important technique used worldwide at this moment. An innovative isolation system is presented in this article, whose passive type operating principle is based on ... -
Experimental Research of Reaction Force Produced by Coanda Nozzle
(Universitatea "Dunărea de Jos" din Galați, 2013-10-01)The paper presents research results of gas dynamics of Coanda nozzle, that is a key element of drones with jet propulsion. The jet propulsion Coanda drones allow you to quickly monitor the large areas in emergency situations: ... -
The Calculation Procedure of Experimental Sonic Generator with Two Resonators Designed for Water Treatment Processes
(Universitatea "Dunărea de Jos" din Galați, 2013-10-01)The design parameters such as nozzle slot, generator’s slot, resonance chamber diameter, resonator neck length, inlet port diameter are required to determine the optimal operating parameters while using the sonic generator ... -
Second Law Analysis of a Furnace for Metal Heating
(Universitatea "Dunărea de Jos" din Galaţi, 2013-10-01)The industry represents an important sector of the final energy consumption and despite the effort made so far, energy saving potential still remains in this sector. This paper presents an example of energy efficiency ... -
Considerations on the Pulsating Character of Pressure Transient of Hydrostatic Components
(Universitatea "Dunărea de Jos" din Galați, 2013-10-01)The paper analyzes the dynamic response of the hydraulic units with the specific character of the hydraulic pressure and transitional pulse from such establishments. It is a simplified mathematical model for these ...