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Semi-infinite plates dragged through granular beds

Guo, H. / Goldsmith, J. / Delacruz, I. / Tao, M. / Luo, Y. / Koehler, S.A.

We perform physical experiments and 2D discrete element method (DEM) simulations of semi-infinite plates dragged through granular beds at low speeds. The plate’s displacement, x, creates a growing surcharge in front of the plate (pile-up) that takes the shape of a wedge. The cross-sectional area of the pile-up wedge is proportional to xZ where Z is the immersion depth and the drag resistance increases from its yielding value with xZ. We extend the classical Coulomb earth pressure theory for yielding walls to account for the piling-up effect and find good agreement with simulations and physical measurements.

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Semi-infinite plates dragged through granular beds

Guo, H. / Goldsmith, J. / Delacruz, I. / Tao, M. / Luo, Y. / Koehler, S.A.

We perform physical experiments and 2D discrete element method (DEM) simulations of semi-infinite plates dragged through granular beds at low speeds. The plate’s displacement, x, creates a growing surcharge in front of the plate (pile-up) that takes the shape of a wedge. The cross-sectional area of the pile-up wedge is proportional to xZ where Z is the immersion depth and the drag resistance increases from its yielding value with xZ. We extend the classical Coulomb earth pressure theory for yielding walls to account for the piling-up effect and find good agreement with simulations and physical measurements.

Semi-infinite plates dragged through granular beds

Guo, H. / Goldsmith, J. / Delacruz, I. / Tao, M. / Luo, Y. / Koehler, S.A.

We perform physical experiments and 2D discrete element method (DEM) simulations of semi-infinite plates dragged through granular beds at low speeds. The plate’s displacement, x, creates a growing surcharge in front of the plate (pile-up) that takes the shape of a wedge. The cross-sectional area of the pile-up wedge is proportional to xZ where Z is the immersion depth and the drag resistance increases from its yielding value with xZ. We extend the classical Coulomb earth pressure theory for yielding walls to account for the piling-up effect and find good agreement with simulations and physical measurements.

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Title:

Semi-infinite plates dragged through granular beds

Contributors:

Guo, H. (author) / Goldsmith, J. (author) / Delacruz, I. (author) / Tao, M. (author) / Luo, Y. (author) / Koehler, S.A. (author)

Published in:

Journal of Statistical Mechanics: Theory and Experiment (Online) ; 2012 ; P07013/1-P07013/8

Publication date:

2012

Size:

8 Seiten, 7 Quellen

ISSN:

DOI:

https://doi.org/10.1088/1742-5468/2012/07/P07013

Type of media:

Article (Journal)

Type of material:

Print

Language:

English

Keywords:

Granulatschüttung , Immersion , Diskrete-Elemente-Methode , Simulationsverfahren , Platte (Bauteil)

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