Open AccessExperimental simulation of tensile fractures from a circular cavity
Author(s) -
S. V. Suknev
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/773/1/012054
Subject(s) - ultimate tensile strength , materials science , fracture (geology) , brittleness , compression (physics) , composite material , brittle fracture , stress (linguistics) , structural engineering , engineering , philosophy , linguistics
The authors experimentally study initiation of tensile fractures from a circular cavity in a geomedium subjected to nonuniform compression. It is found that diameter of the cavity has a significant influence on the local fracture of the geomaterial. A new criterion is proposed for the quasi-brittle fracture of a material in the tensile stress concentration zone. The new criterion holds an integrated parameter which characterizes the size of the pre-fracture zone, the structure of a material and its plastic properties, the cavity geometry and the conditions of loading. The calculation and experiment result agree well.