2D Elastodynamics of Interface Microcracks: The Effect of Cracks Interaction

Guz, I. A.; Menshykova, Marina; Menshykov, Oleksandr

doi:10.1007/s10443-010-9152-0

Cited by 4 publications

(1 citation statement)

References 40 publications

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“…Significant progress has been made in modeling material behavior, and it can be said that the earlier efforts have enabled us to relate many aspects of the macroscopic behavior of engineering materials to their microstructures and the underlying physical processes [1][2][3] . However, real material systems are often complex, and various, often unrealistic, assumptions have to be made in the material models in order to solve the mathematical equations [4] .…”

Section: Introductionmentioning

confidence: 99%

Axisymmetric Finite-Element Analysis for Interface Migration-Controlled Shape Instabilities of Plate-Like Double-Crystal Grains

Huang

Zhang

Guo

et al. 2012

AMR

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An axisymmetric finite-element method is developed to predict the evolution behavior of microstructures by interface migration. The formulation of the method is conducted on the basis of the energy principle during the interface motion. The computations extend earlier models by accounting in detail for the effects of grain-boundary energy, surface energy and chemical potential difference. The eventual shape of the plate-like double-crystal grain depends on both the initial β and the thermal grooving angle Ψ. For a given β, a critical Ψcexists. When Ψ>Ψc, the eventual shape is one made of two sphere segments with a thermal groove. When Ψ≤Ψc, grain splitting along the grain boundary occurs, and the splitting segments evolve into two spheres, respectively. Both the spheroidization time and the splitting time increase with Ψ and β increasing. The volume shrinkage rate decreases with increasing Ψ.

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