Wear in sheet metal forming

  • Wanheim, Tarras (Project Manager)
  • Eriksen, Morten (Project Participant)

    Project Details


    Ph.D.: Morten Eriksen
    The purpose with this work is to combine experimental investigation with numerical simulation to be able to give a better description and estimation of the wear on the tool in sheet metal forming.
    To make the wear investigation in sheet metal forming an existing Tribotester is automated. With the automated Tribotester wear investigations on sliding lengths up to 1000 meter is performed.
    The wear investigation is carried out on three different levels: Investigation of friction and initial wear with accelerated strip test, investigation of wear with strip test under normal condition and investigation of the galling tendency in deep drawing.
    Numerical simulation is performed to support the wear investigation in the strip test and the galling tendency in deep drawing. Beside this numerical simulation is used for describing the influence of the die geometry on tool wear in deep drawing. It is found that the die geometry has a large influence on the wear profile and the site of the wear. Guidelines for optimisation of the die geometry has been made and two die curves has been optimised.
    It is shown that there is a good agreement between the experimental investigation and the numerical simulation, and that it is possible to predict abrasive wear and galling.
    In the last part of the thesis guidelines for prediction of wear in sheet metal forming is made. It is established that it is important on the demand for the theories, the performed experimented investigations and the numerical simulation whether it is a qualitative or a quantitative prediction of the wear which should be the result of the test.
    Effective start/end date01/09/199331/01/1997


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