Particle breakage and micromechanical characteristics of calcareous sand during shearing
نویسندگان
چکیده
منابع مشابه
Micromechanical Considerations of Particle Breakage Using Discrete Element Method
Using DEM (Discrete Element Method), a model is presented to simulate the breakage of two-dimensional polygonshaped particles. In this model, shapes of the particles generated after breakage are predefined and each uniform (uncracked) particle is replaced with smaller inter-connected sub-particles. If the bond between these sub-particles breaks, breakage will happen. With the help of this model...
متن کاملdilation and particle breakage effects on the shear strength of calcareous sands based on energy aspects
in this paper shear behavior of two calcareous sands having different physical properties areinvestigated using drained and undrained triaxial tests. the investigated sands are obtained from two differentzones located in persian gulf, kish island and tonbak region. analysis based on energy aspects show thatfriction angle in these soils, having crushable particles, is formed of three components:...
متن کاملParticle-scale mechanics of sand crushing in compression and shearing using DEM
In this paper, the discrete element method is used to explore why differing amounts of breakage, quantified using Hardin’s relative breakage parameter (Br), are associated with the critical state line (CSL) and the normal compression line (NCL) at similar stress levels. Virtual samples initially containing more than 20,000 spherical particles were isotropically compressed to a range of confinin...
متن کاملCementing Material on Mechanical Property of Calcareous Sand
It is difficult to obtain high quality samples of natural material covering a range of densities and degree of cementation, so study on the sample preparation techniques with similar mechanical properties of natural samples are very important. Experiments were carried out to study the effects of cementation of different materials on the mechanical properties of calcareous sand, e.g., the effect...
متن کاملFE-Modeling of Shear Resistance Degradation in a Sand Body During Cyclic Shearing Under CNS Condition
The behaviour of dry and cohesionless sand body in a cyclic interface shear box test under a constant normal stiffness (CNS) condition is numerically studied. Do this end finite element calculations are carried out using a micro-polar hypoplastic model, where the mean grain diameter of the sand material is used as a characteristic length of the micro-structure. The constitutive equations for th...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: IOP Conference Series: Earth and Environmental Science
سال: 2021
ISSN: 1755-1307,1755-1315
DOI: 10.1088/1755-1315/787/1/012047