STRESSES IN A RAPID FLOW OF SPHERICAL SOLID WITH TWO SIZES
- 1 January 1984
- journal article
- research article
- Published by Taylor & Francis in Particulate Science and Technology
- Vol. 2 (1) , 37-56
- https://doi.org/10.1080/02726358408906392
Abstract
Existing theories that predict the stress-strain rate relationship in a rapidly sheared granular flow can only treat materials that are made of single-size particles. However, granular flows usually involve materials of mixed sizes. It has been observed in many laboratory studies that size distribution has a significant effect on the flow of a granular material. Despite its importance, there has been no quantitative theory that can explain the effect of size distribution. An analytical model is developed here to quantify the stresses in a mixture of spheres with two different sizes and identical material properties. Binary collisions between adjacent particles are considered as the dominating stress-generating mechanism. Comparisons between the theoretical results and the existing laboratory data show good agreement.Keywords
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