壊れやすい材料の動的故障強さの負荷履歴依存性の理論研究
Xiao Yang1, Zhiling Bai2, Zhuoping Duan3
1College of Mechatronic Engineering, North University of China, Taiyuan, 030051, China. yx420381@163.com.
Scientific reports
|February 23, 2026
まとめ
脆い材料のダイナミック・ファイルド・強さは,負荷履歴に依存しているため,固有の特性ではない. この依存は,利率の上昇とともに,実質的な利益を表しています.
科学分野:
- 固体力学 固体力学とは
- マテリアルサイエンス 材料科学
- コンピューティング・マテリアル・サイエンス・サイエンス
背景:
- 脆い材料のダイナミック・ファイルド・レストは,負荷履歴に依存しているため,固有の特性として議論されている.
- この依存関係を理解することは,ダイナミックな条件下での正確な材料モデリングに不可欠です.
研究 の 目的:
- 脆い材料のための時間依存のダイナミックな単軸構成モデルを開発する.
- 負荷履歴に依存し,速度強化がダイナミック故障強度に与える影響を調査する.
主な方法:
- 脆い材料の特徴的なタイム障害基準が開発されました.
- この基準は,ダメージの動的進化法に組み込まれました.
- 時間依存のダイナミックな単軸構成モデルが確立され,検証されました.
主要な成果:
- 高張力速度の動的故障強度は,材料の固有の特性ではなく,負荷履歴に依存する.
- 速度向上とロード履歴依存は,構造的反応ではなく,マクロスケールの機械的行動である.
- マイクロクラックの慣性効果は,これらの観測された現象に寄与しています.
結論:
- 脆い材料の動力強さの負荷履歴依存は,時間依存の張力-張力曲線から生じる.
- ダイナミックな強度と反応は,瞬時的または平均的な速度だけでなく,完全なストレート/ストレスの履歴を考慮する必要があります.
- 開発されたモデルは,ダイナミックな負荷下での脆い材料の時間に依存する行動を正確に捉えています.
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