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- Title
Internal Deformation Measurement and Force Chain Characterization of Mason Sand under Confined Compression using Incremental Digital Volume Correlation.
- Authors
Hu, Zhenxing; Du, Yingjie; Luo, Huiyang; Zhong, Bin; Lu, Hongbing
- Abstract
The mechanical behavior of granular materials such as sand is not well understood due to its complex solid/fluid-like behavior. In this paper, Mason sand was investigated to determine the grain-level Young's modulus and hardness by nanoindentation, and the mesoscale behavior through X-ray tomography of a sample in compression. Mason sand specimen was confined in a polycarbonate tube and compressed in the axial direction at ten axial compressive strains up to -21.8 % while its microstructures were observed. The mesoscale deformations were determined by incremental digital volume correlation of reconstructed volumetric images. A procedure for characterization of internal force chains is developed. The minor principal strains and their principal directions were obtained and used to determine the formation and evolution of force chains.
- Subjects
SAND -- Storage; COMPRESSION loads; DIGITAL images; X-ray measurement; X-ray spectra
- Publication
Experimental Mechanics, 2014, Vol 54, Issue 9, p1575
- ISSN
0014-4851
- Publication type
Article
- DOI
10.1007/s11340-014-9915-x