Sfoglia 1995-2015 per Titolo

Items 1-20 di 326

    • 3d Modeling and Static Analysis of a Bucket Crusher Equipment Attached to the Excavator Arm 

      Eftimie, Dorin; Bogoi, Laurențiu (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 ...

    • 3D Modeling of a New Type of Vibratory Roller 

      Eftimie, Dorin; Apostu, Adrian (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 ...

    • 3D Modelling a Spur Gearing with Solid Edge 

      Haraga, Georgeta (Universitatea "Dunărea de Jos" din Galaţi, 2006)
      The software Solid Edge software is a useful 3D computer aided design (CAD) running under Windows. The commands and icons of Solid Edge software offer the possibility to design various solids. In this paper are presented ...

    • 3D Modelling a Spur Gearing with Solid Edge 

      Haraga, Georgeta (Universitatea "Dunărea de Jos' din Galați, 2006)
      The software Solid Edge software is a useful 3D computer aided design (CAD) running under Windows. The commands and icons of Solid Edge software offer the possibility to design various solids. In this paper are presented ...

    • 3D Modelling Multiple Faucets Bodies 

      Rădulescu, Cătălin; Goanță, Adrian Mihai (Universitatea Dunărea de Jos" din Galați, 2004)
      In this work is doctored the way of tackles the and realization of a innards by the students in the program Autocad. The work has as objective a these accomodation with the commands 3D the and a crossing from 2D to 3D ...

    • About Concrete Consolidation and Vibration 

      Paiovici, Roza; Ionescu, Ștefania (Universitatea "Dunărea de Jos" din Galați, 2004)
      Proper vibration of fresh concrete is an important process in order to ensure optimum strength, durability, and appearance of quality precast products. Accepted practices in the precast industry are unique in some respects ...

    • About Dynamic Stability Analysis of the Power Regulators With Exactly Hyperbolic Characteristic 

      Gavril, Axinti; Năstac, Silviu; Debeleac, Carmen; Axinti, Adrian-Sorin (Universitatea "Dunărea de Jos" din Galați, 2003)
      Power regulators are attached devices of hydraulic pumps with variable capacity. Theses have the means to modify the pump capacity depending of the pressure from the circuit served by the pump. In this way, it result ...

    • About Non-Autonomous Vibrations of Mechanical Systems 

      Cauteș, Gheorghe (Universitatea "Dunărea de Jos" din Galați, 2010)
      Non-linear vibrations of mechanical systems are described by differential equations of the second order, which are generally written .. . x f ( x, x,t )  0 . In this work we study non-autonomous vibrations of mechanical ...

    • About of the Analytical Exactly Solutions of the Differential Equations of the Non-Linear Oscillators 

      Cauteș, Gheorghe (Universitatea "Dunărea de Jos" din Galați, 2004)
      This work presents the manner of the solving of the non-linear differential equations from order II with the form &y& + p(t)y = q(t)y1-2a . These equations can characterize the excited vibrations of the mechanical ...

    • About Phonic Isolation of the Mobile Equipment Cabin 

      Anghelache, Diana (Universitatea "Dunărea de Jos" din Galați, 2008)
      This work presents vibration absorbing and damping solutions for operator cabin on construction equipment. Hereby, the operator cabin has to be considered accordingly. Vibration proof and sound proof materials applied ...

    • About Signals' Spectrum 

      Grigorescu, Luiza; Oproescu, Gheorghe (Universitatea "Dunărea de Jos" din Galați, 2010)
      Due to this Fourier series exclusive interpretation applied to periodical signals, which shows that a stationary harmonic signal with a single pulsation  cannot contain components of other pulsations but its own pulsation ...

    • About the Free Parameter Vibrations of the Mechanical Systems 

      Cauteș, Gheorghe (Universitatea "Dunărea de Jos" din Galați, 2008)
      The oscillation movement of a mechanical non-linear system is not easy to solve exactly in an analytical way. The approximate solutions are based on different methods and give different values with different approximation ...

    • About the Hysteresis-Loop of the Mechanical Oscillators 

      Cauteș, Gheorghe (Universitaea "Dunărea de Jos" din Galați, 2011)
      The work presents firstly the representation of the typical Hysteresis-loop as function between the indoor forces of the oscillator as friction and elastic forces dependant on displacement and, otherwise, as function between ...

    • About the Parametric Modelling of the Protective structure Included in a Tractor Cabin in Order to Study its Protective Capability Using the Finite Element Method 

      Dumitrache, Petru (Universitatea "Dunărea de Jos" din Galați, 2014)
      The objective of the paper is the highlighting of the main aspects that are considered in parametric modelling of the protective structures included in a tractor cabin in order to study its protective capability, using ...

    • About the Vibrations of the Mechanical Systems with Non-Linear Damping 

      Cauteș, Gheorghe (Universitatea "Dunarea de Jos" din Galați, 2009)
      This work will analyze the non-linear vibrations of the mechanical systems, actually the ones with non-linear damping. If we consider damping F( x,x ) x( k k x );k1,k2 R 2 = − 1 − 2 Î & & & then the differential ...

    • Acoustic Absorption Coefficient Variationof Sound Absorbing Structures and Materials 

      Anghelache, Diana (Universitatea "Dunărea de Jos" din Galați, 2008)
      The task of this work is the acoustic absorption coefficient variation study of sound absorbing structures and materials. Three construction equipments have been considered according to their different cabin design. ...

    • Acoustic and Parametric Studies of the Experimental Radial Sonic Generator 

      Pană, Daniela (Universitatea "Dunărea de Jos" din Galați, 2013-05-01)
      In this paper the parameters of the acoustic field were studied experimentally,along with the frequency produced by the generator and the circular diagram of the generator’s acoustic emission, the influence of the nozzle’s ...

    • Acoustical Telemetry 

      Oproescu, Gheorghe; Gheorghe, Cauteș (Universitatea "Dunărea de Jos" din Galați, 2006)
      The work presents a method of position measuring of a mobile body on straitened areas using the acoustical wave. The advantages of the acoustical telemetry consist on contactless measurement of the position and on higher ...

    • Advaced Geometrical Tools for Modelling Plastic Medical Accesories for the Aerosol Instruments Devices 

      Goanță, Adrian Mihai (Universitatea 'Dunărea de Jos" din Galați, 2012)
      This paper aims to present some advanced modelling tools used in modelling three-dimensional plastic medical accessories related to aerosol devices. The tools presented in the paper are applied in particular to generate ...

    • Algorithms for Objects' Shape Recognition and Measurement Before Gripping 

      Srarețu, Ionel; Itu, Alexandru (Universitatea "Dunărea de Jos" din Galați, 2011)
      The paper proposes an algorithmic methodology to solve a necessary first step, namely visualization, recognition and measurement of objects, for gripping, in particular by means of anthropomorphic grippers for robots. ...