p.470
p.474
p.478
p.482
p.486
p.492
p.496
p.502
p.506
Rock’s Acoustic Emission and Damage Deformation Characteristic in Uniaxial Compression Condition
Abstract:
Rock’s uniaxial compression test is completed and the datum is analyzed, then relationship between loading time and AE amplitude, AE counts sum, AE total energy’s released rate come out. Rock’s critical damage is defined which equal result of one minus ratios of residual strength to critical strength. Based on strain equivalence discipline, damage constitutive models related with acoustic emission characteristic are set up. With damage constitutive models established with AE counts sum and AE total energy serving as damage variables respectively and testing datum, the relationship between rock’s damage and stress and strain is described. Then conclusions come out: 1) damage constitutive model with AE counts sum serving as damage variable manifest rock’s damage increasing process and accords with testing result better; 2) theoretical curve is well consistent with testing curve at rock’s peak strength zone.
Info:
Periodical:
Pages:
486-491
Citation:
Online since:
May 2012
Authors:
Price:
Permissions: