Open AccessMeso-damaged VIB analysis for whole failure process of rock
Author(s) -
Junling Jiang,
Changren Ke
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/358/2/022004
Subject(s) - fracture (geology) , geotechnical engineering , geology , constitutive equation , macro , scale (ratio) , finite element method , structural engineering , engineering , computer science , physics , quantum mechanics , programming language
Based on the VIB model and the similarity of VIB two parameters cohesive force law at micro scale and the rock’s stress-strain curve at macro scale, a density evoluting function D(θ) about the elements softened and damaged at micro scale is proposed. The fracture informations of rock material are incorporated into the constitutive equations which in incorporating the density revolving function D(θ) , two kinds state of the elements—air element and solid element are proposed to describe the process of micro element. According to the consistence hypothesis between AE accumulations and the damaged elements, the AE simulation of rock fracture process is realized. The reasonableness of meso-damaged VIB analysis for whole failure process of rock is proved by a rock’s uniaxial compression test.