Micromechanical investigation of the effect of an imposed stress state change during drained cyclic loading using DEM

Liu, Bo; Liu, Zhiyong; Jin, Junwei; Yin, Zhen-Yu

doi:10.1016/j.compgeo.2023.105998

Computers and Geotechnics

2024

DOI: 10.1016/j.compgeo.2023.105998

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Micromechanical investigation of the effect of an imposed stress state change during drained cyclic loading using DEM

Bo Liu,

Zhiyong Liu,

Junwei Jin

et al.

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Cited by 2 publications

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A novel approach for describing gradation curves of rockfill materials based on the mixture concept

Shi,

Xu,

Guo

et al. 2025

Computers and Geotechnics

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A novel approach for describing gradation curves of rockfill materials based on the mixture concept

Shi,

Xu,

Guo

et al. 2025

Computers and Geotechnics

View full text Add to dashboard Cite

Investigation of Fatigue Mechanics and Crack Evolution Characteristics of Jointed Specimens Under Cyclic Uniaxial Compression

Chen,

Liu,

Wang

et al. 2024

Fatigue Fract Eng Mat Struct

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Nonpersistent joints are prevalent in engineering rock masses and are sensitive to cyclic loads induced by geological movements and engineering disturbances. Therefore, studying the fatigue mechanisms of rock masses with nonpersistent joints under cyclic compressive loads is crucial for ensuring the rational design and long‐term stability of rock engineering structures. Based on laboratory experiments, this study employed the discrete element method to create specimens with different nonpersistent joints, and uniaxial compressive cyclic loading tests were conducted on these specimens with different maximum cyclic stress levels. The results show that the joint inclination significantly affects the characteristics of jointed rock, such as deformation modulus, irreversible strain, energy evolution, and crack characteristics. Increasing the maximum stress in the stress path results in a rapid release of hysteretic energy in the jointed regions of the rock, which leads to an exponential decrease in fatigue life while an increase in initial irreversible strain, final irreversible strain, and hysteretic energy density. Additionally, the shear fracture zones on both sides of the model expand, and the propagation and merging of cracks between joints become more extensive and complex. The results are significant for studying rock fatigue instability and structure engineering design.

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Micromechanical investigation of the effect of an imposed stress state change during drained cyclic loading using DEM

Cited by 2 publications

References 57 publications

A novel approach for describing gradation curves of rockfill materials based on the mixture concept

A novel approach for describing gradation curves of rockfill materials based on the mixture concept

Investigation of Fatigue Mechanics and Crack Evolution Characteristics of Jointed Specimens Under Cyclic Uniaxial Compression

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