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Numerical modelling of the heterogeneous rock fracture process using various test techniques
Luleå University of Technology.
Luleå University of Technology.
Dalian University of Technology.
2007 (Engelska)Ingår i: Rock Mechanics and Rock Engineering, ISSN 0723-2632, E-ISSN 1434-453X, Vol. 40, nr 2, s. 107-144Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

A series of numerical tests including both rock mechanics and fracture mechanics tests are conducted by the rock and tool (R-T2D) interaction code coupled with a heterogeneous masterial model to obtain the physical-mechanical properties and fracture toughness, as well as to simulate the crack initiation and propagation, and the fracture progressive process. The simulated results not only predict relatively accurate physical-mechanical parameters and fracture toughness, but also visually reproduce the fracture progressive process compared with the experimental and theoretical results. The detailed stress distribution and redistribution, crack nucleation and initiation, stable and unstable crack propagation, interaction and coalescence, and corresponding load-displacement curves can be proposed as benchmarks for experimental study and theoretical research on crack propagation. It is concluded that the heterogeneous material model is reasonable and the R-T2D code is stable, repeatable and a valuable numerical tool for research on the rock fracture process.

Ort, förlag, år, upplaga, sidor
2007. Vol. 40, nr 2, s. 107-144
Nationell ämneskategori
Annan samhällsbyggnadsteknik
Forskningsämne
Gruv- och Berganläggningsteknik
Identifikatorer
URN: urn:nbn:se:ltu:diva-5104DOI: 10.1007/s00603-006-0091-xISI: 000245363300001Scopus ID: 2-s2.0-34047111392Lokalt ID: 3207b180-6b46-11dc-9e58-000ea68e967bOAI: oai:DiVA.org:ltu-5104DiVA, id: diva2:977978
Anmärkning
Validerad; 2007; 20070925 (bajo)Tillgänglig från: 2016-09-29 Skapad: 2016-09-29 Senast uppdaterad: 2018-07-10Bibliografiskt granskad

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Lindqvist, Per-Arne

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