Căutare 1995-2015 după Titlu

Afișează articolele 146-165 of 326

    • Lifting Machinery the Efficiency Criterion 

      Anghelache, Diana (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 ...

    • Load Distribution Along the Line of Contact to Worm Gearing 

      Ghelase, Daniela; Dașchievici, Luiza (Universitatea "Dunărea de Jos" din Galați, 2015)
      The paper presents a study on the load distribution along the line of contact between the worm tooth and worm wheel tooth. The load distributed unequally and with discontinuities will lead to a variable deformation of ...

    • Manufacturing System Strategic Control 

      Dașchievici, Luiza; Ghelase, Daniela (Universitatea "Dunărea de jos" din Galați, 2009)
      In order to progress in the present-day complex and unpredictable environment, the company must feature abilities of quick response and favorably repositioning itself on the market. Acquisition and preservation of this ...

    • Mathematical Model for Dynamic Behaviour Analysis of the Passive Isolation Systems 

      Năstac, Silviu (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 ...

    • Mathematical Model for Frequency-Dependent soil Propagation Analysis 

      Cauteș, Gheorghe; Năstac, Silviu (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 ...

    • Mathematical Models for the Whole Traction Mechanical System of the Technological Self-Propelled Machines 

      Axinti, Adrian-Sorin (Universitatea "Dunărea de Jos" din Galați, 2007)
      The paper achieves mathematical models of the integral traction mechanical system, that is the system achieved only with gearings organized in the transmission components , gearboxes, card differentials transmissions, ...

    • Measuring and Controlling of Noises and Vibrations Generated by Industrial Sources 

      Drăgan, Nicușor; Debeleac, Carmen (Universitatea "Dunărea de Jos" din Galați, 2008)
      This paper describes a methodology for measuring and control of noises and vibrations generated by industrial sources, such as: construction activities, equipments which use vibrations into working process, etc. ...

    • Mechanization and Automation of the Construction Operations 

      Anghelache, Diana (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 ...

    • Method Algorithm for Order Acceptance in Make-to-Order Manufacturing 

      Ghelase, Daniela; Dașchievici, Luiza (Universitatea "Dunărea de Jos" din Galați, 2013-05-01)
      In practice, decisions on order acceptance and on production planning are often made separately. Sales department is responsible for accepting orders, while production department is in charge of production planning for ...

    • Method Flowchart of Make to Order Manufacturing Systems 

      Dașchievici, Luiza; Ghelase, Daniela (Universitatea "Dunărea de Jos" din Galați, 2012)
      Decisions on acceptance of order and production planning in the manufacturing system are often considered separately. Sales Department is responsible for accepting orders, while the production department deals with ...

    • A Method for Determining the Pressure Loss Coefficients 

      Hauk, Niculai (Universitatea "Dunărea de Jos" din Galați, 2012)
      For braking elements of mechanisms operated by hydraulic cylinders is used hydraulic resistance which controls the working fluid. Determination of these systems is difficult, especially in the design phase. This ...

    • A Method for Establishing by Controlled Aproximation of the Limitted Forces Developed by Alignmed of the Hydraulic Cylinder 

      Hauk, Niculai; Goanță, Adrian Mihai; Ghelase, Daniela (Universitatea "Dunărea de Jos" din Galați, 2002)
      Determination of the limited forces – in case of the mechanisms actioned by the alignmed of the hydraulic cylinders is a very difficult problem to be realized very exactly. This paper presents a numerical method with a ...

    • A Method of Assessing the Stress in some Components of Hydraulic Cylinders 

      Hauk, Niculai (Universitatea "Dunărea de Jos" din Galați, 2008)
      This paper proposes a method for evaluating the stress of the unit body of the hydraulic cylinder and the rod which was at work and the Hydraulic Brake at the end of the race. The paper analyzes the situation in which ...

    • A Method to Increase the Accuracy Of the Mathematical Model Used to Hydraulically Actuated Mechanical Systems 

      Hauk, Niculai (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 ...

    • A Method Used to Determin the Power Necessary for Hydraulic Excavators 

      Hauk, Niculai (Universitatea "Dunărea de Jos" din Galați, 2010)
      This paper presents a method of verification in the design phase, the mechanical power necessary involvement hydraulic pumps for excavators with bucket reverse.Because, in the design phase the digging forces are not ...

    • Methods for Generating Mesh Surfaces Using CAD Systems 

      Haraga, Georgeta; Ghelase, Daniela; Dașchievici, Luiza (Universitatea "Dunărea de Jos" din Galați, 2011)
      One of the most popular graphic software in CAD systems is AutoCAD that is used frequently by a very great number of users thanks to its numerous advantages. In this paper we present several methods to create mesh surfaces ...

    • Modal Calculus of the Reinforced Concrete Bridges Modeled as a Rigid Solid Beared on Viscous Elastic Neoprene Supports 

      Drăgan, Nicușor (Universitatea "Dunărea de Jos" din Galați, 2010)
      This paper proposes an approach of a six degree dynamic model of a rigidsolid with some types of symmetries. These symmetries lead to simplified mathematical models, which are more easily to solve. If the rigid-solid is ...

    • Modal Damping Ratio Calculation for Finited of Mechanical Systems with Viscous Elastic Bearings Using Virtual Instrumentation 

      Drăgan, Nicușor (Universitatea "Dunărea de Jos" din Galați, 2011)
      This paper proposes an approach of a finite DOF dynamic model for the rigid-solid with multiple neoprene apparatus bearings modeled as viscous elastic dampers. After a short presentation of the physical model of the solid ...

    • 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 ...