Articole ştiinţifice: Recent submissions

  • Some technologies for industrial implementation in the area of Satu-Mare. Computer Aided Design for Development & Education. Virtual Approaches 
    BOSTAN, I.; IONESCU, F.; DULGHERU, V.; PFEIFFER, A.; STARK, M.; CONSTANTIN, G.; STEFANOIU, D. (Intern. Sympos. on Social . Develop. & Economic Performance, 2008)
    The paper presents recent achievements on three convergent technological fields: The 1st one deals with the high productive installation for production of spiral of pipe-lines, their design and process control; The 2nd one ...
  • Some research on finite element analysis of composite materials 
    DULGHERU, Valeriu; BOSTAN, Viorel; GUTU, Marin (Galaţi University Press, 2012)
    The aim of this paper is to verify the accuracy of composite materials data input into ANSYS Parametric Design Language for the numerical analysis. For this purpose, some specimens of the laminated composite were subjected ...
  • Some Aspects Regarding Torque Study and Elaboration of the Blades Orientation Mechanism for Microhydropower Plant 
    BOSTAN, Viorel; BOSTAN, Ion; DULGHERU, Valeriu; CIOBANU, Oleg (Science Publishing Group, 2020)
    The analysis of hydraulic energy conversion systems has demonstrated the opportunity for the development of water kinetic energy conversion systems compared to potential energy conversion systems. Insistent searches of ...
  • Some aspects regarding planetary precessional transmissions dynamics 
    BOSTAN, I.; DULGHERU, V.; MALCOCI, I. (IOP Publishing, 2021)
    A mechanical system theoretically should not generate any vibrations and noise to be considered dynamically an ideal system, because vibrations mean a loss of energy. In planetary precessional reducers vibration can appear ...
  • Some aspects regarding the elaboration of multiple precessional gear theory and modern manufacturing technology 
    BOSTAN, Ion; DULGHERU, Valeriu ("Dunărea de Jos" University, Galaţi, 2006)
    The engineering complex study of the triad “gear-technology-transmission” has permitted to elaborate a new type of precessional transmissions with multicouple gear. In this paper, the authors present the mathematic model ...
  • Sea Waves Energy 
    BOSTAN, Ion; GHEORGHE, Adrian; DULGHERU, Valeriu; SOBOR, Ion; BOSTAN, Viorel; SOCHIREAN, Anatolie (Springer Nature Switzerland, 2013)
    The largest energy reserves are stored in the oceans – a large area of water currents continuously moving and covering about 71% of the planet’s surface. The Planet Ocean has a huge energy potential that can be employed ...
  • Safety aspects of kinematic planetary precessional transmissions with plastic wheels 
    BOSTAN, Ion; DULGHERU, Valeriu; BODNARIUC, Ion ("Dunărea de Jos" University, Galaţi, 2012)
    The planetary precessional transmissions represent a new principle type of the mechanical transmissions. The specificity of the relative sphere-spatial movement of the precessional gearing elements makes the sliding friction ...
  • RENAM - collaborative e-infrastructure for research and education in Moldova 
    BOSTAN, Ion; SECRIERU, Grigore; TIGHINEANU, Ion; BOGATENCOV, Petru (IEEE, 2014)
    Development of National research and educational networking infrastructure and services is the basis of modern eInfrastructure components operation. The paper describes current state, development prospects of scientific ...
  • Power losses estimation in precessional gear 
    BOSTAN, Ion; DULGHERU, Valeriu; BODNARIUC, Ion (ICTCM – CITAf - OID.ICM, 2007)
    The planetary precessional transmissions represent a new principled type of the mechanical transmission. The specific of the relative sphere-spatial movement of the precessional gearing elements makes the sliding friction ...
  • Planetary Precessional Transmissions: Synthesis and Generation Technologies 
    BOSTAN, I. (Springer Nature Switzerland, 2013)
    Some problems of mechanical transmissions can be solved with special effects by developing new types of transmissions based on planetary precessional transmissions with multiple gear, that were developed by the author. ...
  • Permanent Magnet Generators (PMG) for Wind Turbines and Micro Hydro Turbines 
    BOSTAN, Ion; GHEORGHE, Adrian; DULGHERU, Valeriu; SOBOR, Ion; BOSTAN, Viorel; SOCHIREAN, Anatolie (Springer Nature Switzerland, 2013)
    There are essential differences in the design of systems for water/air flow kinetic energy conversion into mechanical energy. First of all, speeds of rotation of the turbine rotors are different: the speed of those which ...
  • Nonstandard teeth profile description and justification of precessional gear parameters selection 
    BOSTAN, I.; DULGHERU, V. (IOP Publishing, 2019)
    Teeth profiles have an important role in the efficient transformation of motion in the precessional transmissions. Multiple precessional gear theory, previously developed, did not take into consideration the influence of ...
  • Modelling and simulation of the fluid flow action on rotor blades of the micro-hydropower station 
    BOSTAN, Ion; DULGHERU, Valeriu; BOSTAN, Viorel (Latvia University of Life Sciences and Technologies, 2007)
    Micro-hydropower station provides kinetic energy conversion of river water into mechanical or electrical energy without building barrages. Increased efficiency is provided by blades aerodynamic profile and their optimum ...
  • Micro-hydropower station for kinetic energy conversion of flowing whater 
    BOSTAN, Ion; DULGHERU, Valeriu; BOSTAN, Viorel; SOCHIREANU, Anatol; CIOBANU, Oleg; CIOBANU, Radu (Institutul de Cercetari pentru Hidraulica si Pneumatica, Bucureşti, 2012)
    An efficient conversion of kinetic energy of river water into mechanical or electrical energy without building barrages is provided by micro-hydropower stations. Increased efficiency is achieved by an optimum position of ...
  • Method of axial adjustment for precessional transmissions 
    BOSTAN, Ion; MAZURU, Sergiu; CASIAN, Maxim (EDP Sciences-Web of conferences, 2018)
    Axial adjustment method for precessional transmissions includes compensation error calculation, determination compensator groups, achieved in the form of base and auxiliary rings. The compensator has on the base ring axial ...
  • Membrul corespondent al AŞM Teodor Şişianu la 80 de ani 
    BOSTAN, Ion; TIGHINEANU, Ion; TRONCIU, Vasile (Academia de Ştiinţe a Moldovei, 2013)
    Fizician, domeniul ştiinţific: fizica semiconductorilor şi a dielectricilor, ficroelectronica, dispozitive semiconductoare şi microelectronice, nanotehnologii, senzori. Doctor habilitat în ştiinţe fi zico-matematice (1978), ...
  • Mechatronics between dream and actual reality 
    IONESCU, Florin; BOSTAN, Ion; DULGHERU, Valeriu; AROTĂRIŢEI, Dragoş; CONSTANTIN, George; KOSTADINOV, Kostadin; STRATULAT, Florin (University "Politehnica" of Bucharest, 2010)
    The paper presents some achievements in complex modelling and simulation in mechatronics, being underlined some characteristics of the mechatronics field together with applications of the mechatronics design principles. ...
  • Mathematical modeling of the multipair convex-concave teeth contact in precessional gearing 
    BOSTAN, Viorel; BOSTAN, Ion; VACULENCO, Maxim (Universitatea de Stat din Tiraspol, 2020)
    The paper addresses the problems of creating toothed gears ADCX-CV for 2K – H precessional transmissions, with convex-concave contact KCX-CV with the small difference in the curves of the flanks of the multiple pair ...
  • Kinetostatic analysis and optimization of planetary precessional transmissions 
    BOSTAN, Ion; DULGHERU, Valeriu; SOCHIREAN, Anatolie (Technical University of Cluj-Napoca, 2013)
    The paper presents the CAD (Autodesk Inventor) modeling and CAE simulation of precessional drives capable of high transmission ratio and torque for one stage compact construction. The simulations of the drives provide ...
  • Integrated CAE development of precessional drives using autodesk inventor platform 
    BOSTAN, Ion; IONESCU, Florin; DULGHERU, Valeriu; CONSTANTIN, George; SOCHIREAN, Anatolie (Editura Academiei Române, 2006)
    The paper presents the modeling and simulation of precessional drives designed in two variants capable of high transmission ratio and torque for one stage compact construction. The constructions were designed in Inventor ...

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