Comparative analysis of the proposed modified contact model against previous approaches.

Comparative analysis of the proposed modified contact model against previous approaches.

<p>Comparative analysis of the proposed modified contact model against previous approaches.</p>

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Hlavní autor:	Yongfeng Zhu (7361045) (author)
Další autoři:	Wei Xiong (58411) (author), Wen Fan (586570) (author)
Vydáno:	2025
Témata:	Biophysics Cell Biology Molecular Biology Biotechnology Evolutionary Biology Developmental Biology Environmental Sciences not elsewhere classified Biological Sciences not elsewhere classified varied contact patterns exhibited complex dependencies discrete elemental analysis discrete element method based contact model 82 &# 8201 78 &# 8201 20 &# 8211 triaxial compression simulations modified contact model larger equivalent diameters aspect ratio decreased sphericity decreased numerical simulations modified hertz equivalent diameter theoretical predictions significantly influence sample scale peak stress morphology due mechanical behavior granular materials fundamental characteristics findings enhance dem ).
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The CDF of normal and tangential contact forces in numerical specimens after compression considering different particle morphologies: (a) normal contact force; (b) tangential contact force; and different particle sizes: (c) normal contact force; (d) tangential contact force.
Autor: Yongfeng Zhu (7361045)
Vydáno: (2025)

Two ellipsoidal particles in contact.
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Different contact patterns for two ellipsoids.
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Average contact force and percentage of strong contact force under different conditions: (a) different particle shapes, (b) different particle sizes.
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The normal force between two particles with different equivalent diameters for P3: (a) hertznormal contact force; (b) normal viscous contact force.
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Vydáno: (2025)

The tangential force between two particles with different equivalent diameters for P3: (a) elastic tangential contact force; (b) viscous tangential contact force.
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Vydáno: (2025)

The tangential force between two particles with different aspect ratios and sphericities for De = 6.30 mm: (a) elastic tangential contact force; (b) viscous tangential contact force.
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The normal force between two particles with De = 6.30 mm for different aspect ratios and sphericities: (a) hertz normal contact force; (b) normal viscous contact force.
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Stress concentration factor value in the numerical samples with different shapes and sizes.
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Critical state parameters obtained from DEM simulations.
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Parameters used in the simulations.
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Fabric anisotropy evolution of numerical samples with different shapes and sizes.
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The force chain distributions of different numerical samples composed of elongated ellipsoids with different particle morphologies and particle sizes before shearing and after loading.
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Deviatoric stress-strain curves of numerical samples composed of elongated ellipsoids with different particle morphologies and particle sizes.
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Numerical samples composed of elongated ellipsoids before and after triaxial compression.
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Different ellipsoidal particles with De = 6.30 mm used in the discrete element simulations.
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EDX of (a) PS powder, (b) 5% Fe<sub>3</sub>O<sub>4</sub>/PS composite, (c) 10% Fe<sub>3</sub>O<sub>4</sub>/PS composite, (d) 20% Fe<sub>3</sub>O<sub>4</sub>/PS composite, and (e) 30% Fe<sub>3</sub>O<sub>4</sub>/PS composite.
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Show the BET N2 adsorption/desorption isotherm for calculating the surface area of Fe<sub>3</sub>O<sub>4</sub> (a), and the XRD pattern of Fe<sub>3</sub>O<sub>4</sub> (b).
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SEM image of (a) PS powder, (b) 5% Fe<sub>3</sub>O<sub>4</sub>/PS composite, (c) 10% Fe<sub>3</sub>O<sub>4</sub>/PS composite, (d) 20% Fe<sub>3</sub>O<sub>4</sub>/PS composite, and (e) 30% Fe<sub>3</sub>O<sub>4</sub>/PS composite.
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Vydáno: (2025)

Potential ecological risk.
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Pollutant Load Index (<i>PLI</i>) for five sites.
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The concentration of elements analyzed for each MELs. S1: Chulluncane, S2: Cercana, S3: Tutupaca, S4; Yucamane, S5: Cano, S6: Reference site (Native soil).
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Localization of rural communities near environmental liabilities and bodies of water.
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