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Title: Effect of nonuniform size on internal stresses in a rapid, simple shear flow of granular materials. Part 1, Two grain sizes
Authors: Engineering Foundation (U.S.)
Clarkson University. Dept. of Civil and Environmental Engineering.
Shen, Hayley H.
Keywords: Flow
Granular flow
Granular materials
Shear flow
Stress-strain relationship
Publisher: Cold Regions Research and Engineering Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: CRREL report ; 85-2.
Description: CRREL Report
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, no quantitative theory has been devised 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.
Appears in Collections:CRREL Report

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