Journal
POWDER TECHNOLOGY
Volume 374, Issue -, Pages 10-21Publisher
ELSEVIER
DOI: 10.1016/j.powtec.2020.06.089
Keywords
Granular material; Powder compaction; Particle strength; Uniaxial compression; Particle fracture
Categories
Funding
- Sandia National Laboratories Laboratory Directed Research and Development (LDRD)
- U.S. Department of Energy's National Nuclear Security Administration [DE-NA0003525]
Ask authors/readers for more resources
Particle characteristics can drastically influence the process-structure-property-performance aspects of granular materials in compression. We aim to computationally simulate the mechanical processes of stress redistribution in compacts including the kinematics of particle rearrangement during densification and particle deformation leading to fragmentation. Confined compression experiments are conducted with three sets of commercial microcrystalline cellulose particles nearly spherical in shape with different mean particle size. Experimentally measured compression curves from tall powder columns are fitted with the Kenkre et al. (J. of American Chemical Society, Vol. 79, No. 12) model. This model provides a basis to derive several common two-parameter literature models and as a framework to incorporate statistical representations of critical particle behaviors. We focus on the low-stress compression data and the model comparisons typically not discussed in the literature. Additional single particle compressions report fracture strength with particle size for comparison to the apparent particle strength extracted from bulk compression data. (C) 2020 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available