Adhesion, inelastic contact behavior and simulation of shear dynamics of ultrafine cohesive powder

R. Tykhoniuk; Jürgen Tomas; S. Luding; M. Kappl; L. Heim; H. J. Butt

doi:10.1201/NOE0415383486

Adhesion, inelastic contact behavior and simulation of shear dynamics of ultrafine cohesive powder

R. Tykhoniuk^*, Jürgen Tomas, S. Luding, M. Kappl, L. Heim, H. J. Butt

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

4 Citations (Scopus)

Abstract

Studies on the adhesion mechanics of particles give better physical understanding of essential constitutive functions of a cohesive powder "continuum". The Discrete Element Method (DEM) allows us to consider in detail the contact and adhesion forces within force and momentum balance for each particle in a sheared particle packing. The introduction of irreversible inelastic contact flattening by the model, "stiff particles with soft contacts", is essential to describe the increase of adhesion force, i.e. of the van der Waals forces during preconsolidation. The history dependent dynamic behavior of cohesive powder flow can be "microscopically" investigated and understood. Using a model for elastic-plastic contact behavior between ultrafine particles (about 1 μm), steady-state flow, incipient yielding, dilatancy and consolidation of TiO ₂ powder will be presented. Dynamic formation of a shear zone is also shown and compared to experiments in a standard Jenike shear cell.

Original language	English
Title of host publication	Powders and Grains 2005
Subtitle of host publication	Proceedings of the International Conference on Powders & Grains 2005
Editors	R. Garcia-Rojo, H.J. Herrmann, Sean McNamara
Pages	499-503
Number of pages	5
DOIs	https://doi.org/10.1201/NOE0415383486
Publication status	Published - 1 Dec 2005
Externally published	Yes
Event	5th International Conference on Micromechanics of Granular Media, Powders and Grains 2005 - Stuttgart, Germany Duration: 18 Jul 2005 → 22 Jul 2005

Conference

Conference	5th International Conference on Micromechanics of Granular Media, Powders and Grains 2005
Abbreviated title	PG 2005
Country/Territory	Germany
City	Stuttgart
Period	18/07/05 → 22/07/05

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10.1201/NOE0415383486

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Tykhoniuk, R., Tomas, J., Luding, S., Kappl, M., Heim, L., & Butt, H. J. (2005). Adhesion, inelastic contact behavior and simulation of shear dynamics of ultrafine cohesive powder. In R. Garcia-Rojo, H. J. Herrmann, & S. McNamara (Eds.), Powders and Grains 2005: Proceedings of the International Conference on Powders & Grains 2005 (pp. 499-503) https://doi.org/10.1201/NOE0415383486

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title = "Adhesion, inelastic contact behavior and simulation of shear dynamics of ultrafine cohesive powder",

abstract = "Studies on the adhesion mechanics of particles give better physical understanding of essential constitutive functions of a cohesive powder {"}continuum{"}. The Discrete Element Method (DEM) allows us to consider in detail the contact and adhesion forces within force and momentum balance for each particle in a sheared particle packing. The introduction of irreversible inelastic contact flattening by the model, {"}stiff particles with soft contacts{"}, is essential to describe the increase of adhesion force, i.e. of the van der Waals forces during preconsolidation. The history dependent dynamic behavior of cohesive powder flow can be {"}microscopically{"} investigated and understood. Using a model for elastic-plastic contact behavior between ultrafine particles (about 1 μm), steady-state flow, incipient yielding, dilatancy and consolidation of TiO 2 powder will be presented. Dynamic formation of a shear zone is also shown and compared to experiments in a standard Jenike shear cell.",

author = "R. Tykhoniuk and J{\"u}rgen Tomas and S. Luding and M. Kappl and L. Heim and Butt, {H. J.}",

year = "2005",

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doi = "10.1201/NOE0415383486",

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pages = "499--503",

editor = "R. Garcia-Rojo and H.J. Herrmann and Sean McNamara",

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Tykhoniuk, R, Tomas, J, Luding, S, Kappl, M, Heim, L & Butt, HJ 2005, Adhesion, inelastic contact behavior and simulation of shear dynamics of ultrafine cohesive powder. in R Garcia-Rojo, HJ Herrmann & S McNamara (eds), Powders and Grains 2005: Proceedings of the International Conference on Powders & Grains 2005. pp. 499-503, 5th International Conference on Micromechanics of Granular Media, Powders and Grains 2005, Stuttgart, Germany, 18/07/05. https://doi.org/10.1201/NOE0415383486

Adhesion, inelastic contact behavior and simulation of shear dynamics of ultrafine cohesive powder. / Tykhoniuk, R.; Tomas, Jürgen; Luding, S. et al.
Powders and Grains 2005: Proceedings of the International Conference on Powders & Grains 2005. ed. / R. Garcia-Rojo; H.J. Herrmann; Sean McNamara. 2005. p. 499-503.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

TY - GEN

T1 - Adhesion, inelastic contact behavior and simulation of shear dynamics of ultrafine cohesive powder

AU - Tykhoniuk, R.

AU - Tomas, Jürgen

AU - Luding, S.

AU - Kappl, M.

AU - Heim, L.

AU - Butt, H. J.

PY - 2005/12/1

Y1 - 2005/12/1

N2 - Studies on the adhesion mechanics of particles give better physical understanding of essential constitutive functions of a cohesive powder "continuum". The Discrete Element Method (DEM) allows us to consider in detail the contact and adhesion forces within force and momentum balance for each particle in a sheared particle packing. The introduction of irreversible inelastic contact flattening by the model, "stiff particles with soft contacts", is essential to describe the increase of adhesion force, i.e. of the van der Waals forces during preconsolidation. The history dependent dynamic behavior of cohesive powder flow can be "microscopically" investigated and understood. Using a model for elastic-plastic contact behavior between ultrafine particles (about 1 μm), steady-state flow, incipient yielding, dilatancy and consolidation of TiO 2 powder will be presented. Dynamic formation of a shear zone is also shown and compared to experiments in a standard Jenike shear cell.

AB - Studies on the adhesion mechanics of particles give better physical understanding of essential constitutive functions of a cohesive powder "continuum". The Discrete Element Method (DEM) allows us to consider in detail the contact and adhesion forces within force and momentum balance for each particle in a sheared particle packing. The introduction of irreversible inelastic contact flattening by the model, "stiff particles with soft contacts", is essential to describe the increase of adhesion force, i.e. of the van der Waals forces during preconsolidation. The history dependent dynamic behavior of cohesive powder flow can be "microscopically" investigated and understood. Using a model for elastic-plastic contact behavior between ultrafine particles (about 1 μm), steady-state flow, incipient yielding, dilatancy and consolidation of TiO 2 powder will be presented. Dynamic formation of a shear zone is also shown and compared to experiments in a standard Jenike shear cell.

U2 - 10.1201/NOE0415383486

DO - 10.1201/NOE0415383486

M3 - Conference contribution

AN - SCOPUS:33751224632

SN - 0415383471

SN - 9780415383479

SP - 499

EP - 503

BT - Powders and Grains 2005

A2 - Garcia-Rojo, R.

A2 - Herrmann, H.J.

A2 - McNamara, Sean

T2 - 5th International Conference on Micromechanics of Granular Media, Powders and Grains 2005

Y2 - 18 July 2005 through 22 July 2005

ER -

Adhesion, inelastic contact behavior and simulation of shear dynamics of ultrafine cohesive powder

Abstract

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