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Updated: Jan 22, 2026

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弾塑性格子ばねモデルにおける応力解析へのスイーププロセスアプローチとネットワーク材料への応用
Ivan Gudoshnikov1, Yang Jiao2, Oleg Makarenkov3
1Czech Academy of Sciences, Institute of Mathematics of the , Žitná 609/25, 115 67 Praha 1, Czech Republic.
Physical review. E
|January 21, 2026
まとめ
研究者たちは、無秩序ネットワーク材料の非線形機械的挙動を分析するための新しい計算フレームワークを開発しました。このフレームワークは、超高密度材料が剛性と強度を高めていることを明らかにし、高度な材料設計のための洞察を提供します。
科学分野:
- 材料科学
- 計算力学
- 非線形力学
背景:
- 無秩序ネットワーク材料は普及していますが、その非線形機械的挙動の分析は困難です。
- 既存のモデルでは、これらのシステムにおける弾性と塑性の複雑な相互作用を捉えることがしばしば困難です。
研究 の 目的:
- Moreauのスイーププロセスフレームワークを塑性のある格子ばねモデルに接続すること。
- 弾性-完全塑性格子における準静的進化と応力を分析するための計算方法を開発すること。
- 超高密度無秩序ネットワーク材料の機械的特性を調査すること。
主な方法:
- 弾性-完全塑性格子の準静的進化に関する方程式を導出しました。
- スイーププロセスと、効率的な「リープフロッグ」計算フレームワークを含む数値スキームを構築しました。
- 超高密度無秩序ネットワーク材料における弾塑性応力を分析しました。
主要な成果:
- 「リープフロッグ」フレームワークは、スイーププロセス理論に基づいて塑性イベントを厳密に追跡します。
- 超高密度無秩序ネットワーク材料は、強化された機械的特性を示します。
- 超高密度化の増加は、剛性、降伏強度、引張強度の増加と相関します。
結論:
- 開発されたスイーププロセスフレームワークは、無秩序材料の非線形機械的挙動を分析するための堅牢な方法を提供します。
- 超高密度化は、ネットワーク材料の機械的性能を強化するための重要な設計原則です。
- イベントベースのフレームワークは、他の不均一な材料システムにも一般化可能です。
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