Two ellipsoidal particles in contact.
<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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2025
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| _version_ | 1849927627973853184 |
|---|---|
| author | Yongfeng Zhu (7361045) |
| author2 | Wei Xiong (58411) Wen Fan (586570) |
| author2_role | author author |
| author_facet | Yongfeng Zhu (7361045) Wei Xiong (58411) Wen Fan (586570) |
| author_role | author |
| dc.creator.none.fl_str_mv | Yongfeng Zhu (7361045) Wei Xiong (58411) Wen Fan (586570) |
| dc.date.none.fl_str_mv | 2025-11-25T18:32:21Z |
| dc.identifier.none.fl_str_mv | 10.1371/journal.pone.0337345.g001 |
| dc.relation.none.fl_str_mv | https://figshare.com/articles/figure/Two_ellipsoidal_particles_in_contact_/30714155 |
| dc.rights.none.fl_str_mv | CC BY 4.0 info:eu-repo/semantics/openAccess |
| dc.subject.none.fl_str_mv | 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 ). |
| dc.title.none.fl_str_mv | Two ellipsoidal particles in contact. |
| dc.type.none.fl_str_mv | Image Figure info:eu-repo/semantics/publishedVersion image |
| description | <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 to conduct a multiscale study using contact mechanics theory and the discrete element method (DEM). A series of two-particle tests and triaxial compression simulations were performed. The results show strong agreement between numerical simulations and theoretical predictions at the particle scale, validating the modified contact model. At the sample scale, the peak deviatoric stress increased by approximately 15–40% as aspect ratio decreased from 1.00 to 0.33 and sphericity decreased from 1.00 to 0.11. Similarly, increasing the equivalent diameter from 3.78 mm to 8.82 mm led to a 20–35% rise in peak stress. At the particle scale, both normal and tangential contact forces increased with larger equivalent diameters but exhibited complex dependencies on morphology due to varied contact patterns. These findings enhance the understanding of how particle-scale characteristics influence macroscopic mechanical properties.</p></div> |
| eu_rights_str_mv | openAccess |
| id | Manara_12294fedd1e313f49a3ddee2e246c028 |
| identifier_str_mv | 10.1371/journal.pone.0337345.g001 |
| network_acronym_str | Manara |
| network_name_str | ManaraRepo |
| oai_identifier_str | oai:figshare.com:article/30714155 |
| publishDate | 2025 |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | CC BY 4.0 |
| spelling | Two ellipsoidal particles in contact.Yongfeng Zhu (7361045)Wei Xiong (58411)Wen Fan (586570)BiophysicsCell BiologyMolecular BiologyBiotechnologyEvolutionary BiologyDevelopmental BiologyEnvironmental Sciences not elsewhere classifiedBiological Sciences not elsewhere classifiedvaried contact patternsexhibited complex dependenciesdiscrete elemental analysisdiscrete element methodbased contact model82 &# 820178 &# 820120 &# 8211triaxial compression simulationsmodified contact modellarger equivalent diametersaspect ratio decreasedsphericity decreasednumerical simulationsmodified hertzequivalent diametertheoretical predictionssignificantly influencesample scalepeak stressmorphology duemechanical behaviorgranular materialsfundamental characteristicsfindings enhancedem ).<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 to conduct a multiscale study using contact mechanics theory and the discrete element method (DEM). A series of two-particle tests and triaxial compression simulations were performed. The results show strong agreement between numerical simulations and theoretical predictions at the particle scale, validating the modified contact model. At the sample scale, the peak deviatoric stress increased by approximately 15–40% as aspect ratio decreased from 1.00 to 0.33 and sphericity decreased from 1.00 to 0.11. Similarly, increasing the equivalent diameter from 3.78 mm to 8.82 mm led to a 20–35% rise in peak stress. At the particle scale, both normal and tangential contact forces increased with larger equivalent diameters but exhibited complex dependencies on morphology due to varied contact patterns. These findings enhance the understanding of how particle-scale characteristics influence macroscopic mechanical properties.</p></div>2025-11-25T18:32:21ZImageFigureinfo:eu-repo/semantics/publishedVersionimage10.1371/journal.pone.0337345.g001https://figshare.com/articles/figure/Two_ellipsoidal_particles_in_contact_/30714155CC BY 4.0info:eu-repo/semantics/openAccessoai:figshare.com:article/307141552025-11-25T18:32:21Z |
| spellingShingle | Two ellipsoidal particles in contact. Yongfeng Zhu (7361045) 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 ). |
| status_str | publishedVersion |
| title | Two ellipsoidal particles in contact. |
| title_full | Two ellipsoidal particles in contact. |
| title_fullStr | Two ellipsoidal particles in contact. |
| title_full_unstemmed | Two ellipsoidal particles in contact. |
| title_short | Two ellipsoidal particles in contact. |
| title_sort | Two ellipsoidal particles in contact. |
| topic | 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 ). |