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Granite rock fragmentation at percussive drilling
KTH, School of Engineering Sciences (SCI), Solid Mechanics (Dept.), Solid Mechanics (Div.).ORCID iD: 0000-0002-8645-4892
KTH, School of Engineering Sciences (SCI), Solid Mechanics (Dept.), Solid Mechanics (Div.).ORCID iD: 0000-0001-6232-8819
2013 (English)In: Rock Dynamics and Applications - State of the Art: Proceedings of the 1st International Conference on Rock Dynamics and Applications, RocDyn-1 2013, Taylor & Francis Group, 2013, 437-442 p.Conference paper, Published paper (Refereed)
Abstract [en]

The aim of this study is to numerically model the fracture system at percussive drilling. Due to the complex behavior of rock material, a continuum approach is employed. The KST (Krieg 1978, Swenson & Taylor, 1983) plasticity model is coupled with the DFH (Denoual & Hild 2000, Forquin & Hild 2010) anisotropic damage model. Granite material is investigated and the experiments are performed to characterize the material behavior. The equation of motion is discretized using a FE approach and the explicit time integration method is employed. The problem is modeled in 3D. The fracture mechanism in the rock and the bit penetration-resisting force response are realistically captured by the numerical model.

Place, publisher, year, edition, pages
Taylor & Francis Group, 2013. 437-442 p.
Keyword [en]
Anisotropic damage model, Equation of motion, Explicit time integration method, Fracture mechanisms, Granite materials, Material behavior, Percussive drilling, Plasticity model
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:kth:diva-134257ISI: 000342691300052Scopus ID: 2-s2.0-84878556638ISBN: 978-113800056-8 (print)OAI: oai:DiVA.org:kth-134257DiVA: diva2:666171
Conference
1st International Conference on Rock Dynamics and Applications, RocDyn-1 2013; Lausanne; Switzerland; 6 June 2013 through 8 June 2013
Note

QC 20131122

Available from: 2013-11-22 Created: 2013-11-20 Last updated: 2014-11-06Bibliographically approved

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Larsson, Per-Lennart

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
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  • asciidoc
  • rtf