書誌事項
- タイトル別名
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- Compressive Fracture by Sub-critical Crack Growth-Homogenized Crack Propagation in Rock (5th report)-
- カンキレツ シンテン ニ ヨル アッシュク ハカイ ガンバンナイ ノ キンシツカ キレツ シンテン ダイ 5ホウ
- Homogenized Crack Propagation in Rock (5<SUP>th</SUP> report)
- 岩盤内の均質化亀裂進展 (第5報)
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説明
Compressive fracture process of rock under the uni-axial compression is discussed, as a result of the sub-critical crack growth in it. A numerical procedure for the failure prediction is presented and discussed, basing upon the critical pressure-crack elongation curve (pc - a curve) for the pure mode I crack propagation (KII = 0, KI = KIC) in the homogenized joint model, which is analyzed by means of the Stress Compensation-Displacement Discontinuity Method (SC-DDM). The crack elongation rate (da/dt) is formulated by the empirical equation of the form of da/dt ∝ KIn, where n: the sub-critical crack growth index. The applied stress-crack elongation curve (p - a curve) in the uni-axial compression test is analyzed to clarify the strain rate dependency of the macroscopic compressive strength (Sc), and the time-crack elongation curve (t - a curve) in the creep test of the uni-axial compression is analyzed to evaluate the effect of applied stress upon the lifetime (tF). It is concretely shown that the non-linearity of stress-strain curves and time-strain curves is deeply associated with the sub-critical crack growth in rock. Moreover the significant influence of heterogeneity and in-homogeneity of rock is discussed by presenting a parallel plate model to assess the damage effect and so on.
収録刊行物
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- 資源と素材
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資源と素材 124 (1), 7-19, 2008
一般社団法人 資源・素材学会
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詳細情報 詳細情報について
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- CRID
- 1390282680250928640
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- NII論文ID
- 10020122547
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- NII書誌ID
- AA12188381
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- ISSN
- 18840450
- 18816118
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- NDL書誌ID
- 9359190
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可