Simulation-based investigation of core-shell agglomerates: Influence of spatial heterogeneity in particle sizes on breakage characteristics

Journal
Computational Materials Science  
Volume
137
Start Page
100
End Page
106
Citation
Computational Materials Science (137): 100-106 (2017-09)
Publisher DOI
10.1016/j.commatsci.2017.05.014
Scopus ID
2-s2.0-85019661533
The stability and breakage behavior of agglomerates is of interest in many applications. It is well known that the internal microstructure is of great influence thereupon. However, the precise relationship of structural properties and mechanical behavior is not yet known for many scenarios. In this paper, we consider a flexible stochastic model to analyze the strength of spherical agglomerates consisting of spherical primary particles, arranged as core and shell. Structural properties can be varied in core and shell independently. Applying the bonded-particle model (BPM), we investigate the influence of the primary particle size distributions in core and shell on the breakage behavior under uniaxial compressive load. To get more meaningful results, we perform numerical studies of the same agglomerate with different directions of force and investigate the variation in breakage behavior.
Subjects
Bonded-particle model
Compression experiment
Core-shell agglomerate
Discrete element method
Stochastic microstructure model