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Estimation of the speed of propagation of intergranular stress waves using a simple elastic contact model
Author(s) -
Stephenson Stuart E.
Publication year - 1987
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760271707
Subject(s) - intergranular corrosion , materials science , mechanics , porosity , simple (philosophy) , dependency (uml) , wave speed , compression (physics) , stress (linguistics) , stress wave , composite material , physics , computer science , philosophy , linguistics , software engineering , epistemology , alloy
A model of a granular bed is used to obtain an estimate of the speed of propagation of intergranular stress waves. In the analysis, a simple elastic contact between neighboring grains is assumed. The model may be extended to include more complex Intergranular interaction mechanisms, but at the expense of such a simple analytical solution as that obtained here. The predicted dependence of compression of a granular bed on compressive load is compared with experimental measurements and is found to describe the relationship very well. The simplified analysis gives a general insight into the dependency of wave speed on bed geometry, indicating for example that while wave speed is independent of grain size, it does depend on the Initial porosity of the bed.