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Compaction by wheels: a numerical model for agricultural soils
Author(s) -
SMITH D. L. O.
Publication year - 1985
Publication title -
journal of soil science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.244
H-Index - 111
eISSN - 1365-2389
pISSN - 0022-4588
DOI - 10.1111/j.1365-2389.1985.tb00364.x
Subject(s) - compaction , isotropy , soil compaction , soil water , geotechnical engineering , bulk density , soil science , stress (linguistics) , stress–strain curve , environmental science , geology , mathematics , physics , deformation (meteorology) , oceanography , linguistics , philosophy , quantum mechanics
SUMMARY A simple, numerical model was developed to predict changes in soil dry bulk density resulting from the passage of wheels. The model uses Söhne's solutions to estimate stress increases, and empirical isotropic stress‐strain data to predict soil volume changes. Predicted and measured increases in bulk density, resulting from the passage of various agricultural vehicles, compared favourably at most depths but the model underestimated the compaction of loose soil in close proximity to underlying dense layers. The model may also be used to compare the compaction caused by various types and arrangements of wheels and to assess the contribution made by a particular input variable. Examples of such uses are given.