Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10620162 | Acta Materialia | 2013 | 11 Pages |
Abstract
The granular micromechanics of semi-solid steel at â¼80% solid are studied by synchrotron radiography. A particulate soil mechanics approach to image analysis shows that deformation occurs by the translation and rotation of quasi-rigid grains under the action of contact forces, and that the changes in directional fabric and grain-grain contacts occur by mechanisms similar to those of highly compacted soils including “locked sands”. Grain-scale phenomena are then linked to the macroscopic displacement and strain fields and it is shown that shear-induced dilation is a fundamental response at both the grain and macro scales. Based on this, recommendations are made on future rheology experiments.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
J. Fonseca, C. O'Sullivan, T. Nagira, H. Yasuda, C.M. Gourlay,