During the last years, the trend towards more powerful and reliable drivelines with combustion engines is unbroken and even still increasing. Especially the demand on high performance propulsion systems and power-generation applications remains on a very high level. Torsional vibration dampers are nowadays an important component in drivelines with combustion engines. Due to the increased power output of modern combustion engines, torsional vibration dampers are nowadays clearly higher loaded than some years ago and have been under ongoing development in order to fulfil the high customer demands. Up-to-date computing technologies (FEM, CFD, MBS) have been the basis for further developments in all areas of engine-, component- and driveline-design. But even with powerful calculation routines, testbedmeasurements as well as field-measurements remain an important element in the development process of new products. Only a very sensitive combination of calculation methods and measurements allows the safe design of new products and complete systems. Nevertheless, drivelines with combustion engines still contain lots of uncertainties which complicate an accurate calculation of the system as well as a reliable analysis of measurement results. Especially damping factors for engine damping (piston, bearing) and propeller damping are more or less rough estimations and vary in a wide range throughout literature and among engine-manufacturers, ship-yards and classification societies. Unfortunately, damping parameters often have a big influence not only on the calculation results but as well on torsional vibration measurements. Under these circumstances, parameteridentifications based on a comparison between calculation and measurement results are only conditional suitable, even when carried out with care. This article presents a method for the reliable identification of the parameters of torsional vibration dampers (torsional stiffness & linear viscous damping) based on measurement results and by eliminating all interfering influences of the remaining driveline. Such identification becomes more important, as the product itself cannot be tested separately due to its huge size up to more than three meter diameter and the very high load capacity. This article describes not only the measurement system itself, but as well the signal analysis, which allows the precise identification of the relevant damper parameters.


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    Title :

    Parameter identification of torsional vibration dampers by modern measurement and calculation methods


    Contributors:


    Publication date :

    2007


    Size :

    10 Seiten, 17 Bilder, 2 Quellen


    Type of media :

    Conference paper


    Type of material :

    Storage medium


    Language :

    English




    Parameter identification of torsional vibration dampers by modern measurement & calculation methods

    Philipp, T. / International Council on Combustion Engines | British Library Conference Proceedings | 2007


    TORSIONAL VIBRATION DAMPERS

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    Sullivan, R.J. | Engineering Index Backfile | 1949