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Formulation and optimization of the energy-based blended quasicontinuum method

We formulate an energy-based atomistic-to-continuum coupling method based on blending the quasicontinuum method for the simulation of crystal defects. We utilize theoretical results from Ortner and Van Koten (manuscript) to derive optimal choices of approximation parameters (blending function and finite element grid) for microcrack and di-vacancy test problems and confirm our analytical predictions in numerical tests.

preprint2012arXivOpen access

M. Luskin C. Ortner B. Van Koten

math.NA

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M. Luskin C. Ortner B. Van Koten

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Formulation and optimization of the energy-based blended quasicontinuum method

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