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  • 1
    Electronic Resource
    Electronic Resource
    A discrete element Lagrangian sea ice model (2004)
    Bradford : Emerald
    Engineering computations 21 (2004), S. 409-421 
    Details
    ISSN: 0264-4401
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Technology
    Notes: The ice pack covering the Arctic basin is composed of a multitude of ice parcels of different areas, ages, thicknesses, and deformation histories that are frozen together into larger plates that combine and break apart in response to the demands of ever changing boundary conditions and forcing. Current Arctic sea ice models are Eulerian continuum models that use a plastic yield surface to characterize the constitutive behavior of the pack. An alternative is to adopt a discontinuous Lagrangian approach, based on a discrete element model and explicitly simulate individual ice parcels and the interactions between them. The mechanics of the Lagrangian sea ice model are outlined in detail along with the methods that will be used for validation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/02644400410519857
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  • 2
    Electronic Resource
    Electronic Resource
    Discrete element modeling with dilated particles (2004)
    Bradford : Emerald
    Engineering computations 21 (2004), S. 422-430 
    Details
    ISSN: 0264-4401
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Technology
    Notes: A new contact detection technique for discrete element modeling is described. This technique is suitable for a large family of particle shapes that are based on the dilation process from mathematical morphology. In the dilation process an arbitrary shape is dilated by placing the center of a sphere of fixed diameter at every point in the basic shape. Defining a contact between two objects in this class is equivalent to determining which spheres amongst the infinite number that compose each object is in contact. The algorithm is derived for general ellipsoidal particles and demonstrated with a series of biaxial deformation simulations using a range of ellipsoidal particle shapes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/02644400410519866
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    Paper (German National Licenses)
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