DC Field | Value | Language |
---|---|---|
dc.contributor.author | Fei, Fan | ko |
dc.contributor.author | Choo, Jinhyun | ko |
dc.date.accessioned | 2022-01-21T06:41:22Z | - |
dc.date.available | 2022-01-21T06:41:22Z | - |
dc.date.created | 2022-01-21 | - |
dc.date.created | 2022-01-21 | - |
dc.date.created | 2022-01-21 | - |
dc.date.created | 2022-01-21 | - |
dc.date.created | 2022-01-21 | - |
dc.date.issued | 2021-04 | - |
dc.identifier.citation | Computer Methods in Applied Mechanics and Engineering, v.376 | - |
dc.identifier.issn | 0045-7825 | - |
dc.identifier.uri | http://hdl.handle.net/10203/291927 | - |
dc.description.abstract | Cracking of rocks and rock-like materials exhibits a rich variety of patterns where tensile (mode I) and shear (mode II) fractures are often interwoven. These mixed-mode fractures are usually cohesive (quasi-brittle) and frictional. Although phase-field modeling is increasingly used for rock fracture simulation, no phase-field formulation is available for cohesive and frictional mixed-mode fracture. To address this shortfall, here we develop a double-phase-field formulation that employs two different phase fields to describe cohesive tensile fracture and frictional shear fracture individually. The formulation rigorously combines the two phase fields through three approaches: (i) crack-direction-based decomposition of the strain energy into the tensile, shear, and pure compression parts, (ii) contact-dependent calculation of the potential energy, and (iii) energy-based determination of the dominant fracturing mode in each contact condition. We validate the proposed model, both qualitatively and quantitatively, with experimental data on mixed-mode fracture in rocks. The validation results demonstrate that the doublephase-field model - a combination of two quasi-brittle phase-field models - allows one to directly use material strengths measured from experiments, unlike brittle phase-field models for mixed-mode fracture in rocks. Another standout feature of the double-phase-field model is that it can simulate, and naturally distinguish between, tensile and shear fractures without complex algorithms. (C) 2020 Elsevier B.V. All rights reserved. | - |
dc.language | English | - |
dc.publisher | Elsevier | - |
dc.title | Double-phase-field formulation for mixed-mode fracture in rocks | - |
dc.type | Article | - |
dc.identifier.wosid | 000618127600006 | - |
dc.identifier.scopusid | 2-s2.0-85099208618 | - |
dc.type.rims | ART | - |
dc.citation.volume | 376 | - |
dc.citation.publicationname | Computer Methods in Applied Mechanics and Engineering | - |
dc.identifier.doi | 10.1016/j.cma.2020.113655 | - |
dc.contributor.localauthor | Choo, Jinhyun | - |
dc.contributor.nonIdAuthor | Fei, Fan | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | Phase-field modeling | - |
dc.subject.keywordAuthor | Mixed-mode fracture | - |
dc.subject.keywordAuthor | Cohesive fracture | - |
dc.subject.keywordAuthor | Frictional fracture | - |
dc.subject.keywordAuthor | Rocks | - |
dc.subject.keywordAuthor | Quasi-brittle materials | - |
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