ENERGYAPPROACH TO THEANALYSIS OF COMPLEX DEFORMATION-WAVE PROCESSES IN STRUCTURED GEOMATERIAL UNDER LOADING BEFORE DESTRUCTION
Keywords:
rock mass, hierarchical block structure, laboratory experiment, speckle-method, microstrains, deformation-wave processesAbstract
The aim of this study was to analyze distribution and development of stress–stress state in structured rock specimens subject to uniaxial and biaxial loading to failure using digital speckle correlation method. Within the experimental analysis of wave processes in the block-hierarchy
structure of geomedia (uniaxial and biaxial com-pression
and shearing of prismatic geomaterial specimens), the
authors revealed the fact of initiation of low-frequency
micro-deformation processes under slow (quasi-static)
disturbances. The estimation of the defor-mation-wave
behavior of geomaterials as the “summed” contributions
made by elements of the scanned surfaces with differentoriented (in-phase and anti-phase) oscillations has been
performed using the energy approach that is based on the
scanning function R, analogous to the “center of mass”
in the classical mechanics.
