On the determination and evolution of fabric in representative elementary volumes for a sand specimen in triaxial compression
Research output: Contribution to journal › Research article › Contributed › peer-review
Contributors
Abstract
The soil response in triaxial compression tests, that are commonly treated as element tests, is known to be inhomogeneous. Several studies have revealed the localisation of deformation throughout the whole specimen by digital image correlation techniques on X-ray tomographies. The fabric of a soil specimen has so far only been studied on complete specimens as a bulk measurement or in chosen subsets. In this contribution, we present a study on the spatial and temporal distribution of the fabric throughout one Hostun sand sample in triaxial compression. Therefore, we calibrated the minimum representative element size first for three chosen fabric variables considering three different criteria. By distributing the elements in a regular grid over the specimen, we are able to clearly identify the onset of the localisation in terms of void ratio, coordination number and contact fabric anisotropy. Spatially and temporally the contact fabric variables precede the void ratio changes as they are much more sensitive to small changes.
Details
Original language | English |
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Article number | 97 |
Journal | Granular matter |
Volume | 24 |
Issue number | 4 |
Publication status | Published - Aug 2022 |
Peer-reviewed | Yes |
External IDs
Scopus | 85135789272 |
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WOS | 000838083700003 |
Mendeley | ff310b4a-61c7-3b9e-952a-751d561db876 |
ORCID | /0000-0002-9222-3361/work/142245047 |
Keywords
DFG Classification of Subject Areas according to Review Boards
Keywords
- Fabric, Heterogeneity, Inter-particle contacts, REV, Sand, X-ray CT