Paper Title:
Effect of the Stress Balance on Determination of Rock Dynamic Fracture Toughness Using Holed-Cracked Flattened Brazilian Disc
  Abstract

Based on the experimental and FEM analysis, it was discussed that the stress balance was not a necessary condition for determining rock dynamic fracture toughness accurately using holed-cracked flattened Brazilian disc. The dynamic stress distribution modes of disc sample with time change were analyzed from the early loading stage to continued loading process. It was proved that the fracture time may occur before the balance of stress was achieved. It was not necessary meet the condition of the stress balance using the experiment combined with numerical method. We could get dynamic fracture toughness, according to the dynamic stress intensity factor of the crack tip and fracture time.

  Info
Periodical
Chapter
Chapter 1: The Basic of Mechanics and Research Methods
Edited by
Huixuan Zhang, Ye Han, Fuxiao Chen and Jiuba Wen
Pages
71-76
DOI
10.4028/www.scientific.net/AMM.117-119.71
Citation
S. Zhang, X. W. Li, "Effect of the Stress Balance on Determination of Rock Dynamic Fracture Toughness Using Holed-Cracked Flattened Brazilian Disc", Applied Mechanics and Materials, Vols. 117-119, pp. 71-76, 2012
Online since
October 2011
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Price
$32.00
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