Phase-field crack analysis using estimated transition zone of crack by molecular dynamics simulation

K. Satake, K. Okada, M. Muramatsu

研究成果: Article査読

抄録

We calculate the parameter that governs the width of the transition zone by molecular dynamics (MD) simulation and use it in a phase-field crack (PFC) simulation with the mechanical properties of iron. First, a quantitative evaluation of intactness is conducted by examining the change in atomic conformation induced by crack propagation, whose numerical data are taken from the result of the MD simulation. The spatial distribution of the intactness is fitted to the same function as the damage parameter in the PFC model, namely, an exponential function, by the least-squares method. From this distribution, the transition zone parameter is estimated. The result of the PFC simulation using this newly determined transition zone parameter is discussed in terms of the crack path by comparison with the result of crack propagation analysis based on the MD simulation.

本文言語English
論文番号065206
ジャーナルAIP Advances
11
6
DOI
出版ステータスPublished - 2021 6 1

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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