Modelling the material parameter distribution of expanded granules

Modelling the material parameter distribution of expanded granules This work deals with the determination of material parameters for different expanded glass and clay granules. When using these materials as crash absorbers, the crushing strength and Young’s modulus are of particular interest, especially for Discrete Element Simulation. Single particle tests were performed with a uniaxial compression test, and the stress–strain curves were recorded. The Young’s modulus was determined based on a Hertzian contact model. To model the obtained results statistically, two models dependent on the particle diameter are introduced to describe the distribution of the parameters. These approaches are combined to a three-dimensional model covering the probability of a parameter tuple consisting of diameter, crushing strength, and Young’s modulus. Finally, this model is used to generate sample numbers at random, corresponding to a type of granules using an inverse transform sampling. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Granular Matter Springer Journals

Modelling the material parameter distribution of expanded granules

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Publisher
Springer Berlin Heidelberg
Copyright
Copyright © 2017 by Springer-Verlag Berlin Heidelberg
Subject
Physics; Soft and Granular Matter, Complex Fluids and Microfluidics; Engineering Fluid Dynamics; Materials Science, general; Geoengineering, Foundations, Hydraulics; Industrial Chemistry/Chemical Engineering; Engineering Thermodynamics, Heat and Mass Transfer
ISSN
1434-5021
eISSN
1434-7636
D.O.I.
10.1007/s10035-017-0735-4
Publisher site
See Article on Publisher Site

Abstract

This work deals with the determination of material parameters for different expanded glass and clay granules. When using these materials as crash absorbers, the crushing strength and Young’s modulus are of particular interest, especially for Discrete Element Simulation. Single particle tests were performed with a uniaxial compression test, and the stress–strain curves were recorded. The Young’s modulus was determined based on a Hertzian contact model. To model the obtained results statistically, two models dependent on the particle diameter are introduced to describe the distribution of the parameters. These approaches are combined to a three-dimensional model covering the probability of a parameter tuple consisting of diameter, crushing strength, and Young’s modulus. Finally, this model is used to generate sample numbers at random, corresponding to a type of granules using an inverse transform sampling.

Journal

Granular MatterSpringer Journals

Published: Jun 28, 2017

References

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