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  • 1.
    Mohammadnejad, Mostafa
    et al.
    Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering.
    Ghazvini, Mahdi
    Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering.
    Finite Element Modeling of Dynamic Properties of Power Supply for an Industrial Application2014Independent thesis Advanced level (degree of Master (Two Years))Student thesis
    Abstract [en]

    In this thesis, the dynamic properties of the mechanic structure of Power Supply for an Industrial Application, an Alstom company product, are considered. A finite element model of the Power Supply mechanic structure have been generated with the aid of the MSC Marc software. Based on the FE model; modal analysis have been carried out and the eigenfrequencies and eigenmodes for the FE model have been calculated in a suitable frequency range. Relevant frequency response functions for the FE model have been produced using dynamic harmonic analysis. To validate and update the FE model, experimental modal analysis have been carried out on a Power Supply. For the experimental modal analysis the MIMO method the polyreference least-squares complex exponential method have been used. Based on the updated FE model some modified Power Supply designs are suggested with improved dynamic properties in an adequate frequency range.

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  • 2.
    Mohammadnejad, Mostafa
    et al.
    Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering.
    Ghazvini, Mandi
    Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering.
    Håkansson, Lars
    Blekinge Institute of Technology, Faculty of Engineering, Department of Applied Signal Processing. Blekinge Inst Technol, Via Valhallavagen, S-37141 Karlskrona, Sweden..
    FINITE ELEMENT MODELING OF DYNAMIC PROPERTIES OF POWER SUPPLY FOR AN INDUSTRIAL APPLICATION2015In: PROCEEDINGS OF THE 22ND INTERNATIONAL CONGRESS ON SOUND AND VIBRATION: MAJOR CHALLENGES IN ACOUSTICS, NOISE AND VIBRATION RESEARCH, 2015 / [ed] Crocker, MJ Pawelczyk, M Pedrielli, F Carletti, E Luzzi, S, INT INST ACOUSTICS & VIBRATION , 2015Conference paper (Refereed)
    Abstract [en]

    In this study, the dynamic properties of the mechanic structure of Power Supply for an industrial application is considered. A finite element model of the Power Supply mechanic structure has been generated with the aid of the MSC Marc software. Based on the FE model; modal analysis has been carried out and the eigenfrequencies and eigenmodes for the FE model have been calculated in a suitable frequency range. Relevant frequency response functions for the FE model have been produced using dynamic harmonic analysis. To validate and update the FE model, experimental modal analysis has been carried out on a Power Supply. For the experimental modal analysis the MIMO method the polyreference least-squares complex exponential method has been used. Based on the updated FE model some modified Power Supply designs are suggested with improved dynamic properties in an adequate frequency range.

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