Different contact patterns for two ellipsoids.

Different contact patterns for two ellipsoids.

<div><p>Particle morphology and size are fundamental characteristics that significantly influence the mechanical behavior of granular materials. This study introduces key parameters—aspect ratio (Ω), sphericity (S), and equivalent diameter (Dₑ)—into a modified Hertz-based contact model t...

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Bibliografiske detaljer
Hovedforfatter:	Yongfeng Zhu (7361045) (author)
Andre forfattere:	Wei Xiong (58411) (author), Wen Fan (586570) (author)
Udgivet:	2025
Fag:	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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Lignende værker

Two ellipsoidal particles in contact.
af: Yongfeng Zhu (7361045)
Udgivet: (2025)

Numerical samples composed of elongated ellipsoids before and after triaxial compression.
af: Yongfeng Zhu (7361045)
Udgivet: (2025)

Different ellipsoidal particles with De = 6.30 mm used in the discrete element simulations.
af: Yongfeng Zhu (7361045)
Udgivet: (2025)

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.
af: Yongfeng Zhu (7361045)
Udgivet: (2025)

Deviatoric stress-strain curves of numerical samples composed of elongated ellipsoids with different particle morphologies and particle sizes.
af: Yongfeng Zhu (7361045)
Udgivet: (2025)

The force chain distributions of different numerical samples composed of elongated ellipsoids with different particle morphologies and particle sizes before shearing and after loading.
af: Yongfeng Zhu (7361045)
Udgivet: (2025)

Average contact force and percentage of strong contact force under different conditions: (a) different particle shapes, (b) different particle sizes.
af: Yongfeng Zhu (7361045)
Udgivet: (2025)

The normal force between two particles with different equivalent diameters for P3: (a) hertznormal contact force; (b) normal viscous contact force.
af: Yongfeng Zhu (7361045)
Udgivet: (2025)

The tangential force between two particles with different equivalent diameters for P3: (a) elastic tangential contact force; (b) viscous tangential contact force.
af: Yongfeng Zhu (7361045)
Udgivet: (2025)

Comparative analysis of the proposed modified contact model against previous approaches.
af: Yongfeng Zhu (7361045)
Udgivet: (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.
af: Yongfeng Zhu (7361045)
Udgivet: (2025)

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.
af: Yongfeng Zhu (7361045)
Udgivet: (2025)

Stress concentration factor value in the numerical samples with different shapes and sizes.
af: Yongfeng Zhu (7361045)
Udgivet: (2025)

Critical state parameters obtained from DEM simulations.
af: Yongfeng Zhu (7361045)
Udgivet: (2025)

Parameters used in the simulations.
af: Yongfeng Zhu (7361045)
Udgivet: (2025)

Fabric anisotropy evolution of numerical samples with different shapes and sizes.
af: Yongfeng Zhu (7361045)
Udgivet: (2025)

Data Sheet 1_Evaluation of the epidemiological and economic impact of the ADLIFE intervention on medium- to long-term in patients with advanced chronic disease.pdf
af: Igor Larrañaga (5434382)
Udgivet: (2025)

The factors affecting the adsorption. (a) Effect of contact time on MB removal efficiency by the Fe₃O₄/PS adsorbent. Part (b) the changes in the adsorption capacity of MB over time at pH 7.
af: Tamer S. Saleh (5181146)
Udgivet: (2025)

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).
af: Tamer S. Saleh (5181146)
Udgivet: (2025)

Adsorption kinetics and isotherms. (a) The influence of MB equilibrium concentration on the adsorption capacity of the Fe₃O₄/PS adsorbent, (b & c) present the Freundlich and Sips isotherm models, respectively, for MB adsorption on the Fe₃O₄/PS adsorbent (adsorbent mass of 15 mg, a solution volume of 25 mL, and a contact time of 25 min), (d) Effect of equilibrium concentrations on the adsorption of MB onto the synthesized sorbent, (e) the adsorption isotherm, and (f) Langmuir isotherm C- Sips d- DR e- RP and f Temkin isotherms.
af: Tamer S. Saleh (5181146)
Udgivet: (2025)

الاستحسان الأصولي وأثره في نظرية الظروف الطارئة: نماذج تطبيقية
af: Mansour, Mohamed Khaled
Udgivet: (2023)

Real sample application. (a) Reusability studies of 100 mg of Fe<sub>3</sub>O<sub>4</sub>/PS composites in terms of removal efficiency changes for the capturing properties of 15 mg/L of MB after five regeneration/reuse cycles, (b) Selectivity of Fe<sub>3</sub>O<sub>4</sub>/PS composite toward MB in the presence of the MO ionic dye, and (c) monitoring of MB in industrial wastewater samples.
af: Tamer S. Saleh (5181146)
Udgivet: (2025)

(A) Development of Fe<sub>3</sub>O<sub>4</sub>/PS adsorbent for MB dye removal, (B) Methylene blue dye structure, and (C) Methyl Orange dye structure.
af: Tamer S. Saleh (5181146)
Udgivet: (2025)

Effect of adsorbent dose and pH on the removal efficacy. (a) UV-vis spectra of 25 mg/L of MB solution before and after treatment with different doses of Fe<sub>3</sub>O<sub>4</sub>/PS composites (from 4 mg to 40 mg) at 25 °C for 15 min, (b) the relationship between the adsorbent dose and the removal efficiency of MB, and (c) the effect of the pH on the removal efficiency.
af: Tamer S. Saleh (5181146)
Udgivet: (2025)

(a) UV-vis spectra of 25 mg/L of MB solution before and after treatment with Fe<sub>3</sub>O<sub>4</sub>, PS powder, and different Fe<sub>3</sub>O<sub>4</sub>/PS composites, and (b) the effect of the type of adsorbent on the removal efficiency.
af: Tamer S. Saleh (5181146)
Udgivet: (2025)

Investigation of the MB adsorption by PS and PS/Fe<sub>3</sub>O<sub>4</sub> composites. (a) FTIR spectra of PS powder before and after MB adsorption and (b) FTIR spectra of MB before and after treatment with Fe<sub>3</sub>O<sub>4</sub>/PS composites.
af: Tamer S. Saleh (5181146)
Udgivet: (2025)

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.
af: Tamer S. Saleh (5181146)
Udgivet: (2025)

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.
af: Tamer S. Saleh (5181146)
Udgivet: (2025)

Contamination Factor Index of Environmental Liabilities Included in the Study.
af: César Julio Cáceda Quiroz (22683324)
Udgivet: (2025)

The study includes the Geoaccumulation Index of environmental liabilities.
af: César Julio Cáceda Quiroz (22683324)
Udgivet: (2025)

Soil contaminants from mining activities.
af: César Julio Cáceda Quiroz (22683324)
Udgivet: (2025)

Concentration of Potentially Toxic Elements (mg/kg) in the environmental liabilities.
af: César Julio Cáceda Quiroz (22683324)
Udgivet: (2025)

Characterization of environmental liabilities.
af: César Julio Cáceda Quiroz (22683324)
Udgivet: (2025)

Spearman rank order correlation for selected parameters analyzed in soil samples from mining environmental liabilities.
af: César Julio Cáceda Quiroz (22683324)
Udgivet: (2025)

Principal Component Analysis (PCA) graphs of EPT concentrations (As, Cd, Cr, Pb, Br, Hg, and CN<sup>-</sup>) and their spatial distribution in environmental sites of S1: Cercana, S2: Chulluncane, S3: Tutupaca, S4: Yucamane, S5: Cano.
af: César Julio Cáceda Quiroz (22683324)
Udgivet: (2025)

Potential ecological risk.
af: César Julio Cáceda Quiroz (22683324)
Udgivet: (2025)

Pollutant Load Index (<i>PLI</i>) for five sites.
af: César Julio Cáceda Quiroz (22683324)
Udgivet: (2025)

The concentration of elements analyzed for each MELs. S1: Chulluncane, S2: Cercana, S3: Tutupaca, S4; Yucamane, S5: Cano, S6: Reference site (Native soil).
af: César Julio Cáceda Quiroz (22683324)
Udgivet: (2025)

Localization of rural communities near environmental liabilities and bodies of water.
af: César Julio Cáceda Quiroz (22683324)
Udgivet: (2025)

Location of Mining Environmental Liabilities (MELs) and Sampling Sites in the Tacna Region, Peru.
af: César Julio Cáceda Quiroz (22683324)
Udgivet: (2025)

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