FAILURE ANALYSIS INVOLVING FRICTIONAL CONTACT ON CRACK INTERFACES

主として圧縮に対して抵抗する岩盤やコンクリートなどの非均質脆性材料の変形破壊挙動は，構成材料内部における不連続面の発生・進展や異種材料界面の剥離のみでなく，それら不連続面の接触・摩擦すべり挙動などが絡み合った結果として現れる．本論文では，こうした変形破壊挙動の追跡を目的に，Cohesive crack モデルを有限被覆法に導入した Lagrange 未定乗数法に基づく数値解析手法を新しく開発した．例題を通して，不連続面の摩擦接触の影響を反映しながらその発生・進展を追跡する数値解析手法としての有用性を示した．

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