Căutare 1995-2015 după Titlu

Afișează articolele 164-183 of 326

    • Model and Calculation Algorithms for Gear Percussion 

      Axinti, Gavril (Universitatea "Dunărea de Jos" din Galați, 2009)
      The paper highlights some aspects of modeling the dynamic processes taking place in the percussion equipments, known as hydraulic hammers. Theoretical and experimental aspects of the behaviour of equipments on test stand ...

    • A Model of the Mechanical Waves in Curved Bars 

      Oproescu, Gheorghe (Universitatea "Dunărea de Jos" din Galați, 2007)
      The different classical models of the mechanical waves in bars cover every a single type of the wave, respectively only longitudinal, transversal, inflexion or torsion wave and only in a rectilinear bar, every with his ...

    • Modeling the Dynamic Behavior of the Supercharger Units of Supercharged Diesel Engines 

      Burciu, Mugurel (Universitatea "Dunărea de Jos" din Galați, 2013)
      The paper preseflts the sintulation of the dynamic behavior of the supe.rcharger group with free rotatiott, using diJfere,tial equatiotts. The model is based on working knowledge of static characteiistics of the supercharge ...

    • Modelling of an Ancient Bronze Suspension head by Means of Reverse Engineering Technique 

      Efstathiou, K.; Varitis, Em.; Mansour, G. (Universitatea 'Dunărea de Jos" din Galați, 2009)
      In recent years, reverse engineering technique is used in the field of archaeology to model the geometry of archaeological findings. Modelling of ancient objects is a demanding process due to fragility. In this paper ...

    • Modern CAD Tools Used in Mechanical Design 

      Goanță, Adrian Mihai (Universitatea "Dunărea de Jos" din Galați, 2010)
      This paper aims to present synthetically as many of those tools that are part of Mechanical Desktop 2008 software with notable performance in the CAD environment and to justify this performance by the presentation of the ...

    • Monitoring and Control of Manufacturing Process 

      Ghelase, Daniela; Dașchievici, Luiza (Universitatea "Dunărea de Jos" din Galați, 2014)
      According to this new approach, a machining system interacts with the “market” carrying out a certain “service” (machining “service”) for a specified “client” (the work piece) it establishes a full economic relationship ...

    • Mud Pumping Equipment Attached to Excavator Arm 

      Eftimie, Dorin (Universitatea "Dunărea de Jos" din Galați, 2012)
      This study presents a mud pumping equipment that can be attached to the excavator arm. This equipment can solve ecological issues in narrow spaces, in areas where access is limited as well as during floods. Tthe technological ...

    • Muffler Performances Modeling with Boundary Element - Method and Experimental Study 

      Vasile, Ovidiu (Universitatea "Dunărea de Jos" din Galați, 2010)
      This paper investigates the acoustic performance of a reactive silencer using Boundary Element Method analysis and experimental techniques. This analysis addresses a research topic of major interest today on how to reduce ...

    • NDT of Cementitious Materials 

      Picu, Mihaela; Tudose, Cosma (Universitatea "Dunărea de Jos" din Galați, 2006)
      The US method presented an automatically extract certain parameters of US waves, parameters that have been continuously recorded during the mortar hardening process. Until now, the standard methodes measured only ...

    • A New Calculating Method of the Reaction Support Groups Used in Rotary Kiln 

      Ene, Gheorghe; Marin, Cornel (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 ...

    • Noise and Vibration Protective Solution Analysis for Technological Equipments 

      Anghelache, Diana (Universitatea "Dunărea de Jos" din Galați, 2010)
      This paper presents a cumulative and comparative analysis, concerning the noise and vibration pollution and protective approaches, monutoring the construction technological equipments. By means of the computer simulations, ...

    • Noise Study of a Naval Ship in Different Operating Modes on the Danube 

      Picu, Mihaela (Universitatea "Dunărea de Jos" din Galați, 2014)
      In this paper are described the experimental measurements of noise transmitted to the staff from a naval ship during different operating modes on the Danube. This paper is focused on the technical aspects of the Directive ...

    • Non-Linear Dynamic Behavior of a Ball Float Valve 

      Dragomirescu, Cristian; Crăifăleanu, Andrei (Universitatea "Dunărea de Jos" din Galați, 2012)
      The dynamic behavior of the spherical body floating in a liquid, part of a ball float valve, is analyzed from the point of view of the dynamic systems theory. The study of the motion illustrates the differences between ...

    • Nonlinear Approaches Regarding Mechanical and Thermal Behaviour of Visco-Elastic Vibration on Isolators 

      Năstac, Silviu (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 ...

    • Numerical Simulations of the Special Isolation Devices Against Vibratory Actions 

      Năstac, Silviu-Marian (Universitatea "Dunărea de Jos" din Galați, 2007)
      In this paper the author use the physical and mathematical models for the antiseismic and antivibrational elastic systems and describe the dynamic behaviour of this systems, for the few types of the vital equipment - ...

    • "NX Manufacturing" - Digital Manufacturing Integrated Solution for PLM 

      Goanță, Mihai; Eftimie, Dorin (Universitatea "Dunărea de Jos" din Galați, 2014)
      This paper presents a description of the integrated manufacturing solution produced by Siemens NX MANUFACTURING INDUSTRY SOFTWARE - that respects the principles of the concept of Product Lifecycle Management (PLM). It's ...

    • NX Siemens - Integrated Solution of PLM Mechanical Design 

      Goanță, Adrian Mihai; Nedelcuț, Florin (Universitatea "Dunărea de Jos" din Galați, 2014)
      This paper presents a description of the integrated solution for the SIEMENS NX design – meeting the principles of the concept Product Lifecycle Management (PLM). There is also a succinct explanation of the origin and ...

    • On Dynamics of Bucket Wheel Excavators with Radial Digging 

      Debeleac, Carmen (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.

    • On Line Competitiveness Based on Adeptive Control of the Manufacturing System 

      Dașchievici, Luiza; Ghelase, Daniela (Universitatea "Dunărea de Jos" din Galați, 2010)
      Competitiveness fully and synthetically characterizes the viability of an enterprise. In the economics literature competitiveness is analyzed in particular in economic and managerial terms with almost no insight into the ...

    • On the Control of the Element Finite Meshes with Dimension in Arithmetic Progression 

      Dumitrache, Petru (Universitatea "Dunărea de Jos" din Galați, 2012)
      The purpose of this article is to present the formulae for calculating the parameters defining the finite element meshes with variable dimensions in arithmetical progression along some user defined paths within the ...