Open AccessAnalysis on the microstructure of sands
Author(s) -
Weihua Zhang,
Chenggang Zhao,
Yinping Zhang
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/446/2/022049
Subject(s) - microstructure , micromechanics , homogenization (climate) , anisotropy , materials science , cauchy stress tensor , stress (linguistics) , shear stress , geotechnical engineering , constitutive equation , geology , composite material , structural engineering , classical mechanics , engineering , physics , finite element method , biodiversity , ecology , linguistics , philosophy , quantum mechanics , composite number , biology
The macroscopic behavior of sands is closely related with its microstructure. Starting from the microstructure of sands, using micromechanics and integrated with statistically homogenization, considering intergranular contact force and branch vector, the paper focuses on the expressions for macroscopic stress; Integrated with the fabric characteristics of granular material, the second-order fabric tensor F is derived, and the relationship between stress-force-fabric is established. It shows that the macroscopic stress of sands is closely directed with inherent and stress-induced anisotropy, and the tendency between shear strength and fabric is same which lay the foundation for the following constitutive relationship for sands.