Atomistic simulation for initiation of crystal slip deformation from surface of nanoscale copper single-crystal nanowires

E Kawai, A Kubo, Y Umeno - Computational Materials Science, 2023 - Elsevier
In nano/micrometer-scale materials, dislocations accounting for crystal slip deformation are
introduced from the surface because of lack of pre-existing dislocations inside the materials …

Inductive determination of rate-reaction equation parameters for dislocation structure formation using artificial neural network

Y Umeno, E Kawai, A Kubo, H Shima, T Sumigawa - Materials, 2023 - mdpi.com
The reaction–diffusion equation approach, which solves differential equations of the
development of density distributions of mobile and immobile dislocations under mutual …

Gradient extension of classical material models: from nuclear & condensed matter scales to earth & cosmological scales

EC Aifantis - Size-Dependent Continuum Mechanics Approaches …, 2021 - Springer
The various mathematical models developed in the past to interpret the behavior of natural
and manmade materials were based on observations and experiments made at that time …

Dislocation random walk under cyclic deformation

A Kubo, E Kawai, T Sumigawa, H Shima, Y Umeno - Physical Review E, 2024 - APS
Dislocation motion under cyclic loading is of great interest from theoretical and practical
viewpoints. In this paper, we develop a random walk model for the purpose of evaluating the …

[HTML][HTML] Surface outflow effect on dislocation structures in micrometer-sized metals

A Tobise, H Shima, Y Akiba, Y Umeno, E Kawai… - Extreme Mechanics …, 2023 - Elsevier
Dislocations in metals often multiply and agglomerate into quasi-ordered structures with
various morphologies in cyclic loading experiments. Specifically in face-centered cubic …

Applications of regime-switching in the nonlinear double-diffusivity (DD) model

AK Chattopadhyay, EC Aifantis - Journal of Applied Physics, 2024 - pubs.aip.org
The linear double-diffusivity (DD) model of Aifantis, comprising two coupled Fick-type partial
differential equations and a mass exchange term connecting the diffusivities, is a paradigm …

Transmissibility in interactive nanocomposite diffusion: the nonlinear double-diffusion model

AK Chattopadhyay, B Kundu, SK Nath… - Frontiers in Applied …, 2022 - frontiersin.org
Model analogies and exchange of ideas between physics or chemistry with biology or
epidemiology have often involved inter-sectoral mapping of techniques. Material mechanics …

Ein Beitrag zur Modellierung versetzungs-und verformungsinduzierter plastischer Lokalisierungsphänomene metallischer Werkstoffe

DICB Silbermann - 2019 - monarch.qucosa.de
Abstract (DE) Die vorliegende Arbeit beschäftigt sich mit Festkörperkontinuumsmechanik
und Metall-bzw. Kristallplastizität auf verschiedenen Längenskalen. Diesbezüglich besteht …

機械学習による物理ベース階層マルチスケールモデル構築の試み

梅野宜崇 - まてりあ, 2024 - jstage.jst.go.jp
物理現象のほとんどは微分方程式で記述されることが知られており, その支配方程式を数値積分
することによって現象を計算機上で再現する数値シミュレーションは, 以前から幅広い物理問題に …