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Compaction of granular materials composed of deformable particles
- Source :
- EPJ Web of Conferences, International Conference on Micromechanics of Granular Media (Powders & Grains), International Conference on Micromechanics of Granular Media (Powders & Grains), Jul 2017, Montpellier, France. ⟨10.1051/epjconf/201714005013⟩, International Conference on Micromechanics of Granular Media (Powders & Grains), Jul 2017, Montpellier, France. EDP Sciences, 140, 2017, EPJ Web of Conferences. 〈10.1051/epjconf/201714005013〉, (140)2017; 8. International Conference on Micromechanics of Granular Media (Powders & Grains), Montpellier, FRA, 2017-07-03-2017-07-07, EPJ Web of Conferences, Vol 140, p 05013 (2017)
- Publication Year :
- 2017
- Publisher :
- HAL CCSD, 2017.
-
Abstract
- In soft particle materials such as metallic powders the particles can undergo large deformations without rupture. The large elastic or plastic deformations of the particles are expected to strongly affect the mechanical properties of these materials compared to hard particle materials more often considered in research on granular materials. Herein, two numerical approaches are proposed for the simulation of soft granular systems: (i) an implicit formulation of the Material Point Method (MPM) combined with the Contact Dynamics (CD) method to deal with contact interactions, and (i) Bonded Particle Model (BPM), in which each deformable particle is modeled as an aggregate of rigid primary particles using the CD method. These two approaches allow us to simulate the compaction of an assembly of elastic or plastic particles. By analyzing the uniaxial compaction of 2D soft particle packings, we investigate the effects of particle shape change on the stress-strain relationship and volume change behavior as well as the evolution of the microstructure.
- Subjects :
- Materials science
QC1-999
[SDV]Life Sciences [q-bio]
Compaction
Nanotechnology
produit granulaire
02 engineering and technology
Granular material
01 natural sciences
010305 fluids & plasmas
strain
0103 physical sciences
propriété mécanique
Contact dynamics
Composite material
comportement élastique
Material point method
Aggregate (composite)
[ SDV ] Life Sciences [q-bio]
mechanical characteristic
Physics
021001 nanoscience & nanotechnology
Microstructure
Particle
Particle size
0210 nano-technology
déformation mécanique
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- EPJ Web of Conferences, International Conference on Micromechanics of Granular Media (Powders & Grains), International Conference on Micromechanics of Granular Media (Powders & Grains), Jul 2017, Montpellier, France. ⟨10.1051/epjconf/201714005013⟩, International Conference on Micromechanics of Granular Media (Powders & Grains), Jul 2017, Montpellier, France. EDP Sciences, 140, 2017, EPJ Web of Conferences. 〈10.1051/epjconf/201714005013〉, (140)2017; 8. International Conference on Micromechanics of Granular Media (Powders & Grains), Montpellier, FRA, 2017-07-03-2017-07-07, EPJ Web of Conferences, Vol 140, p 05013 (2017)
- Accession number :
- edsair.doi.dedup.....f641f5bca2e5ea0c02c975d512f45ac5