Open AccessNon-coaxial Deformation Characteristics of Fine Sand under Principal Stress Rotation
Author(s) -
Yue Teng,
Ping Hu
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/570/3/032035
Subject(s) - coaxial , principal stress , shear stress , deformation (meteorology) , rotation (mathematics) , materials science , stress (linguistics) , shear (geology) , geotechnical engineering , stress–strain curve , cylinder , composite material , geology , geometry , engineering , mathematics , mechanical engineering , linguistics , philosophy
A series of pure principal stress rotation tests with dynamic hollow cylinder apparatus were conducted on saturated fine sand. The elastic torsional shear strain was reported to account for a large proportion of the total torsional shear strain, which could not be ignored. On this basis, the non-coaxial angle is redefined and the non-coaxial deformation characteristics and influencing factors of saturated fine sand are studied. The results show that the principal stress rotation will cause obvious plastic deformation of the fine sand and that the initial shear stress has a more significant influence on the non-coaxial deformation characteristics of the sand compared to the intermediate principal stress coefficient.