Plate Forming by Line Heating

  • Clausen, Henrik Bisgaard (Project Manager)

    Project Details

    Description

    Double curved plates pose a special problem in shipyard practice, due to the inherently difficult production process. An often used method is the one of Line Heating. In this process the plate is heated by a moving source, and depending on the chosen heat flux, path, and velocity the plate forms into the desired shape. The method has been used throughout shipyard industry for several decades, but not until recently has the mechanics of the method been understood.
    The objective of the project 'Plate Forming by Line heating' is to develop rational tools which can determine the heating paths, the heat flux, and the velocity that produce a desired shape. This involves direct calculations with Finite Element Analysis, extraction of empirical relations as well as experimental studies. Once validated with experiments, the empirical relations allows for optimisation procedures, where direct iteration is prohibited by the size of the problem at hand.
    So far (1998) a parametrically controlled Finite Element Model has been build, and a series of FEA has been carried out. This enables emperical relations between maximum temperature, torch speed and plate thickness versus output local deformation to be derived.
    StatusFinished
    Effective start/end date01/02/199831/01/2000

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