TY - GEN
T1 - Experimental and DEM Study of Two Dimensional Simple Shear
AU - Yang, Yunming
AU - Zhang, Min
AU - Zhang, Hanwen
AU - Yu, Hai Sui
N1 - Publisher Copyright:
© 2021, The Author(s), under exclusive license to Springer Nature Switzerland AG.
PY - 2021
Y1 - 2021
N2 - It is well established that the principal stress rotation (PSR) can lead to plastic deformations in soil, and soil is subjected to two dimensional shears in many geotechnical applications, which lead to two dimensional principal stress rotations. This paper aims to study impacts of two dimensional PSRs on soil behavior by using the DEM and experimentation, in which glass beads are used. In the two directional simple shear apparatus, the first shear is exerted on samples along one direction, followed by the second shear at varying angles to the first shear. The experimental results indicate that the angle between the first and second shears have a great impact on the sample strength. The DEM results are in very good agreement with the experimental results on the development of both shear stress and volumetric change. Further, lateral normal stresses in the simple shear in the DEM study can be obtained, enabling the computation of principal stresses under two dimensional shears. Fabric developments of samples can also be studied in the DEM simulation.
AB - It is well established that the principal stress rotation (PSR) can lead to plastic deformations in soil, and soil is subjected to two dimensional shears in many geotechnical applications, which lead to two dimensional principal stress rotations. This paper aims to study impacts of two dimensional PSRs on soil behavior by using the DEM and experimentation, in which glass beads are used. In the two directional simple shear apparatus, the first shear is exerted on samples along one direction, followed by the second shear at varying angles to the first shear. The experimental results indicate that the angle between the first and second shears have a great impact on the sample strength. The DEM results are in very good agreement with the experimental results on the development of both shear stress and volumetric change. Further, lateral normal stresses in the simple shear in the DEM study can be obtained, enabling the computation of principal stresses under two dimensional shears. Fabric developments of samples can also be studied in the DEM simulation.
KW - DEM
KW - Non-coaxiality
KW - Principal stress rotation
KW - Two dimensional simple shear
UR - http://www.scopus.com/inward/record.url?scp=85101512041&partnerID=8YFLogxK
U2 - 10.1007/978-3-030-64514-4_26
DO - 10.1007/978-3-030-64514-4_26
M3 - Conference contribution
AN - SCOPUS:85101512041
SN - 9783030645137
T3 - Lecture Notes in Civil Engineering
SP - 303
EP - 310
BT - Challenges and Innovations in Geomechanics - Proceedings of the 16th International Conference of IACMAG - Volume 1
A2 - Barla, Marco
A2 - Di Donna, Alice
A2 - Sterpi, Donatella
PB - Springer Science and Business Media Deutschland GmbH
T2 - 16th International Conference of the International Association for Computer Methods and Advances in Geomechanics, IACMAG 2021
Y2 - 5 May 2021 through 8 May 2021
ER -