Effect of Particle Shape on Mechanical Behaviors of Rocks: A Numerical Study Using Clumped Particle Model
Joint Authors
Rong, Guan
Liu, Guang
Hou, Di
Zhou, Chuang-bing
Source
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-07-25
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Medicine
Information Technology and Computer Science
Abstract EN
Since rocks are aggregates of mineral particles, the effect of mineral microstructure on macroscopic mechanical behaviors of rocks is inneglectable.
Rock samples of four different particle shapes are established in this study based on clumped particle model, and a sphericity index is used to quantify particle shape.
Model parameters for simulation in PFC are obtained by triaxial compression test of quartz sandstone, and simulation of triaxial compression test is then conducted on four rock samples with different particle shapes.
It is seen from the results that stress thresholds of rock samples such as crack initiation stress, crack damage stress, and peak stress decrease with the increasing of the sphericity index.
The increase of sphericity leads to a drop of elastic modulus and a rise in Poisson ratio, while the decreasing sphericity usually results in the increase of cohesion and internal friction angle.
Based on volume change of rock samples during simulation of triaxial compression test, variation of dilation angle with plastic strain is also studied.
American Psychological Association (APA)
Rong, Guan& Liu, Guang& Hou, Di& Zhou, Chuang-bing. 2013. Effect of Particle Shape on Mechanical Behaviors of Rocks: A Numerical Study Using Clumped Particle Model. The Scientific World Journal،Vol. 2013, no. 2013, pp.1-12.
https://search.emarefa.net/detail/BIM-1012555
Modern Language Association (MLA)
Rong, Guan…[et al.]. Effect of Particle Shape on Mechanical Behaviors of Rocks: A Numerical Study Using Clumped Particle Model. The Scientific World Journal No. 2013 (2013), pp.1-12.
https://search.emarefa.net/detail/BIM-1012555
American Medical Association (AMA)
Rong, Guan& Liu, Guang& Hou, Di& Zhou, Chuang-bing. Effect of Particle Shape on Mechanical Behaviors of Rocks: A Numerical Study Using Clumped Particle Model. The Scientific World Journal. 2013. Vol. 2013, no. 2013, pp.1-12.
https://search.emarefa.net/detail/BIM-1012555
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1012555