Extrinsic Cohesive Zone Modelに基づくハイブリッドFEM-DEMを用いた岩石の準静的載荷条件下での破壊解析に関する基礎的検討
書誌事項
- タイトル別名
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- Fundamental Study on Fracture Process Analysis of Rocks under Quasi-Static Loading Based on Hybrid FEM-DEM Using Extrinsic Cohesive Zone Model
抄録
<p>In this study, FDEM (ECZM), which is the combined finite-discrete element method (FDEM) based on an extrinsic cohesive zone model (ECZM), was improved by incorporating a novel algorithm that makes it easier to insert the cohesive elements than the conventional adaptive remeshing and a scheme to avoid the generation of dormant cohesive element, which is generated as a result of inserting a single cohesive element within the FDEM mesh. The improved FDEM (ECZM) was implemented in a self-developed 2-dimentional code, and it was first validated against a numerical experiment assuming a virtual rock. Subsequently, the proposed FDEM was applied to model the uniaxial compression and the Brazilian tests of siliceous mudstones under quasi-static loading. The results of the proposed FDEM simulations reasonably captured the trends of fracturing and stress-strain curves observed in the experiments well. The proposed scheme can also be extended to parallel computation based on general-purpose-graphic-unit (GPGPU) and 3-dimentional FDEM (ECZM) with minimal efforts.</p>
収録刊行物
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- 材料
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材料 71 (3), 206-213, 2022-03-15
公益社団法人 日本材料学会
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詳細情報 詳細情報について
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- CRID
- 1390010292699172224
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- ISSN
- 18807488
- 05145163
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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
- Crossref
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可