U.S. flag An official website of the United States government.
Official websites use .gov

A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS

A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

i

A Study on Bonded Block Model (BBM) Complexity for Simulation of Laboratory-Scale Stress-Strain Behavior in Granitic Rocks



Details

  • Personal Author:
  • Description:
    The emergent macroscopic behaviors of Bonded Block Models (BBM) are governed largely by the properties assigned to their three components - blocks, contacts and zones (blocks are discretized using finite-difference zones). Over the years, different representations of these components, including elastic/inelastic zones and heterogeneous/homogenous blocks and contacts (corresponding to different mineral grains and associated mechanical properties), have been employed to simulate various aspects of rock behavior. However, there is a lack of understanding of the capabilities of these model representations with respect to their ability to replicate specific rock mechanical attributes. The goal of this study was to test a variety of model representations and evaluate their capabilities in terms of reproducing mechanical behaviors observed for a granitic rock type. It was found that inelastic zones were necessary to capture high confinement peak strengths while incorporation of heterogeneity was necessary to replicate the micro-cracking process. The heterogeneous, inelastic BBMs could match all the calibration targets and is identified as the best representation for modeling the full range of granitic rock behaviors. To help researchers select an appropriate BBM representation for modeling different aspects of rock behavior, a summary table outlining the capabilities of the different model representations is also provided. [Description provided by NIOSH]
  • Subjects:
  • Keywords:
  • ISSN:
    0266-352X
  • Document Type:
    Text
  • Funding:
    Contract
  • Genre:
    Journal Article
  • Place as Subject:
  • CIO:
    National Institute for Occupational Safety and Health (NIOSH)
  • Topic:
    Workplace Safety & Health
  • Location:
    North America
  • Volume:
    118
  • NIOSHTIC Number:
    nn:20068474
  • Citation:
    Comput Geotech 2020 Feb; 118:103363
  • Contact Point Address:
    Sankhaneel Sinha, Department of Geology and Geological Engineering, Colorado School of Mines, 1516 Illinois St., Golden, CO, United States
  • Email:
    sankhaneelsinha@mymail.mines.edu
  • Federal Fiscal Year:
    2020
  • Performing Organization:
    Colorado School of Mines, Golden
  • Peer Reviewed:
    True
  • Start Date:
    20160915
  • Source Full Name:
    Computers and Geotechnics
  • End Date:
    20210914
  • Collection(s):
  • Main Document Checksum:
    urn:sha-512:7f1f9f6835536a2c5853b23f3a2d42ec6a1710d7dd766e20a5a37dee1e65a0ad8294c5c313e34d2887d014d65e03f280856136c4dcda16153abf9e3f64d2c330
  • Download URL:
  • File Type:
    Filetype[PDF - 7.35 MB ]
PREVIOUS
ON THIS PAGE
Details
CDC STACKS serves as an archival repository of CDC-published products including scientific findings, journal articles, guidelines, recommendations, or other public health information authored or co-authored by CDC or funded partners.

As a repository, CDC STACKS retains documents in their original published format to ensure public access to scientific information.
BACK TO TOP