Cohesive, frictional powders: contact models for tension

By Stefan Luding. 2008

635 citations recorded by the source corpus.

The contacts between cohesive, frictional particles with sizes in the range 0.1–10 μm are the subject of this study. Discrete element model (DEM) simulations rely on realistic contact force models—however, too much details make both implementation and interpretation prohibitively difficult. A rather simple, objective contact model is presented, involving the physical properties of elastic–plastic repulsion, dissipation, adhesion, friction as well as rolling- and torsion-resistance. This contact model allows to model bulk properties like friction, cohesion and yield-surfaces. Very loose packings and even fractal agglomerates have been reported in earlier work. The same model also allows for pressure-sintering and tensile strength tests as presented in this study.

Subfields: Automotive Engineering, Computational Mechanics, Mechanics of Materials

View Paper: https://www.semanticscholar.org/paper/329e3c8424cbaa709e7c059a01a229d4fd2e032c

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In Automotive Engineering

1. Zhifu Shen
2. Marte Gutierrez
3. Abdalsalam Mohamed
4. M. Jiang
5. Hossein Ahmadian
6. Orencio Durán
7. S. C. Thakur
8. P. Claudin

In Computational Mechanics

1. Jianfeng Wang
2. J. Rojek
3. Zhifu Shen
4. M. Jiang
5. O. Su
6. Qiang Yao
7. Guanqing Liu
8. Marte Gutierrez

In Mechanics of Materials

1. J. Rojek
2. O. Su
3. Eugenio Oñate
4. C. Labra
5. Zhifu Shen
6. Marte Gutierrez
7. Abdalsalam Mohamed
8. M. Jiang

Citations in the corpus

• SCALING OF DISCRETE ELEMENT MODEL PARAMETERS FOR COHESIONLESS AND COHESIVE SOLID (2015, methodology): “, 2014; Yen and Chaki, 1992), compaction (Luding, 2008; Sheng et al., 2004a) powder flow (Moreno-atanasio et al.”
• Adhesive particulate flow: The discrete-element method and its application in energy and environmental engineering (2011, background): “[182], Luding [183], and Walton and Johnson [184], which is based on a piece-wise linear cohesive model accounting for the plastic deformation of microsized particles.”
• Comparative study of different discrete element models and evaluation of equivalent micromechanical parameters (2012, background): “Interparticle interaction models can be based on different types of contact laws incorporating different physical effects such as elasticity, viscosity, damage and friction (Donze et al., 2009; Kruggel-Emden et al., 2008; Luding, 2008; Chang and Hicher, 2005).”
• A novel three-dimensional contact model for granulates incorporating rolling and twisting resistances (2015, methodology): “Using the incremental method [44], the relative rotation rate can be divided into the rolling and twisting rates as”
• Numerical simulation of turbulent sediment transport, from bed load to saltation (2011, methodology): “[67] S.”
• Comprehensive study of the effects of rolling resistance on the stress–strain and strain localization behavior of granular materials (2010, methodology): “Finally, models for rolling resistance as well as torque resistance for 3D DEM simulation have been proposed by [ 30 ,32].”