From Electrons to Finite Elements: A Concurrent Multiscale Approach for Metals

Abstract

We present a multiscale modeling approach that concurrently couples quantum mechanical, classical atomistic and continuum mechanics simulations in a unified fashion for metals. This approach is particular useful for systems where chemical interactions in a small region can affect the macroscopic properties of a material. We discuss how the coupling across different scales can be accomplished efficiently, and we apply the method to multiscale simulations of an edge dislocation in aluminum in the absence and presence of H impurities.

4 pages

References in corpus (3)

• Interatomic potentials from first-principles calculations: the force-matching method
• Hydrogen-enhanced local plasticity in aluminum: an ab initio study
• Multiscale simulations in simple metals: a density-functional based methodology

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