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  • Contact problems using Overhouser splines
    Ulaga, Samo ; Ulbin, Miran ; Flašker, Jože
    A contact detection algorithm using Overhauser spline is presented, solving contact problems with the finite element method. The contact area defined by object boundaries can be approximated in ... different ways. It can be modelled using straight lines between nodes, finite element shape functions or interpolation functions over boundary nodes respectively. As line description gives a poor approximation of the boundary, shape functions are widely used to describe the analysed geometry. As the smooth and accurate geometry description is crucial to contact stress analysis, decoupling of the geometry from the polynomial shape functions and implementation of Overhouser splines is suggested in the present work. The single parametric curve is used to model the contacting surface offering the C1 continuous description of the boundary enabling exact boundary condition imposition. On the other hand, geometry description using splines provides the data required for the actual contact area determination and exact contact size calculation. The implementation of the suggested approach as it is used in the developed finite element code is presented. The benefits and the drawbacks of the proposed approach are discussed. The developed code is then used for solving contact problems in gears.
    Vir: Modern practice in stress and vibration analysis : proceedings of the 3rd International conference on modern practice in stress and vibration analysis/Dublin/Ireland/3-5 September 1997 (Str. 177-182)
    Vrsta gradiva - prispevek na konferenci
    Leto - 1997
    Jezik - angleški
    COBISS.SI-ID - 3019286

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