Figures of the Article
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Typical SSCC
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DEM normal contact model considering attraction
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Typical crack images after desiccation cracking of clay sample in parallel laboratory tests[29]
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SWRC[15] of Bioley silt and measured mass water content[29]
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Suction stress-matric suction curve of Bioley silt
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SSCC of Bioley silt
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Initial soil sample generated by DEM simulation
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Axial displacements of soil particles under different water contents obtained by DEM simulation
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Strain-water content relationship of soil samples in laboratory tests and DEM simulation
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Normalized percentages of maximum value and average value of absolute axial displacement of soil particles
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Relationship between total contact number of DEM soil samples and water content
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Relationship between suction stress and water content during desiccation
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Relationship between contact force of soil particles and water content
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Relationship between physical contact force chain of soil particles and water content
Tables of the Article
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参数 变量 取值 初始颗粒半径/m $ {R_0} $ $1.0 \times {10^{-3}}$ 阻尼系数 $ \beta $ 0.7 颗粒法向刚度/(N·m-1) $k_{\text{n}}^{{\text{ball-ball}}}$ $1.0 \times {10^6}$ 颗粒切向刚度/(N·m-1) $k_{\text{s}}^{{\text{ball-ball}}}$ $8.0 \times {10^5}$ 颗粒-墙法向刚度/
(N·m-1)$k_{\text{n}}^{{\text{ball-wall}}}$ $1.0 \times {10^7}$ 颗粒-墙切向刚度/
(N·m-1)$k_{\text{s}}^{{\text{ball-wall}}}$ $8.0 \times {10^6}$ 颗粒摩擦系数 ${\mu ^{{\text{ball-ball}}}}$ 0.20 颗粒-墙摩擦系数 ${\mu ^{{\text{ball-wall}}}}$ 0.0 吸引力/N $ {F_{\text{a}}} $ $ d_{50}^2{\sigma _{\text{s}}} $ 吸引力作用范围/m $ {d_{\text{a}}} $ $ 1.0{R_{\text{w}}} $