T0301-2-5 一次要素を用いた不安定変形評価法の開発とき裂を有する原子構造体への適用(マイクロ・ナノの視点からの強度・力学特性評価)

概要

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For the investigation of mechanical instability in a large-scale atomic structure, a simplified method is presented that can describe unstable deformation with reduced degrees of freedom by introducing linear elements. The proposed method is applied to a cracked atomic structure under tension, and it can successfully reproduce the minimum eigenvalue of the Hessian matrix of the potential energy before the dislocation emission and its deformation mode near the crack tip. The computational load is considerably reduced in comparison with the original precise method, and this enables us to address the mechanical instability in a large-scale atomic system.
社団法人日本機械学会の論文
2009-09-12