A granular model of solidification as applied to hot tearing
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We present a two-dimensional granular model for the mechanical behavior of an ensemble of globular grains during solidification. The grain structure is produced by a Voronoi tessellation based on an array of predefined nuclei. We consider the fluid flow ca ...
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Hot tearing, a severe defect occurring during solidification is the conjunction of tensile stresses which are transmitted to the mushy zone by the coherent solid underneath and of insufficient liquid feeding to compensate for the volumetric change. The RDG ...
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lexible electronic devices are currently being developed using polymer substrates. Such devices present advantages like conformability, are light-weight and are expected to be manufactured in roll-to-roll (R2R) schemes accounting for cost-reduction. These ...
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Two important factors affecting hot tearing - semi-solid constitutive behaviour and grain percolation - have been simulated through the use of microstructure models based on granular structures. The semi-solid model geometry is based on a modified Voronoi ...
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