Mechanical characteristics and energy evolution of rock with circular hole defects.

ABSTRACT: In this paper, the uniaxial compression damage characteristics of specimens are analyzed containing holes using PFC2D. In addition, the crack propagation, stress distribution and energy development characteristics of the specimens were systematically discussed. The findings indicate that the strength parameters of various specimens drop initially and then increase with increasing center point connecting angle, in comparison to intact rock. The most significant reduction in strength parameters is observed at a center point connecting angle of 45°. The stress concentration around the holes occurs prior to crack initiation and vanishes upon specimen failure. The number of cracks in the specimens is small and the propagation length is short before touching the peak value, while the cracks expa

SUBMITTER: Xuan Z 

PROVIDER: S-EPMC10707678 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature