Runout of submarine landslides and their impact on subsea infrastructure using material point method

Youkou Dong

Runout of submarine landslides and their impact on subsea infrastructure using material point method

Youkou Dong

Research output: Thesis › Doctoral Thesis

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Abstract

The material point method Is adopted to simulate the runout of submarine slides and their impact on subsea Infrastructure. Parallelised code running on graphics processing units yields runtimes about 5% of those for sequential computations.

Runout behaviour of centrifuge model tests and real case history are simulated and compared with depth-averaged methods.Different runout mechanisms are observed for different combinations of soil and seabed parameters.

Steady force exerted by slides impacting fixed seabed infrastructure are quantified, fitting results with a hybrid model that captures effects due to Inertia, shear strength and static pressure of the sliding material.

Original language	English
Qualification	Doctor of Philosophy
Awarding Institution	The University of Western Australia
Supervisors/Advisors	Wang, Dong, Supervisor Randolph, Mark, Supervisor
Award date	16 Feb 2017
Publication status	Unpublished - 2017

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THESIS - DOCTOR OF PHILOSOPHY - DONG Youkou - 2017
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Cite this

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title = "Runout of submarine landslides and their impact on subsea infrastructure using material point method",

abstract = "The material point method Is adopted to simulate the runout of submarine slides and their impact on subsea Infrastructure. Parallelised code running on graphics processing units yields runtimes about 5% of those for sequential computations.Runout behaviour of centrifuge model tests and real case history are simulated and compared with depth-averaged methods.Different runout mechanisms are observed for different combinations of soil and seabed parameters.Steady force exerted by slides impacting fixed seabed infrastructure are quantified, fitting results with a hybrid model that captures effects due to Inertia, shear strength and static pressure of the sliding material.",

keywords = "Submarine landslide, Material point method, Morphology, Runout, Large deformation, Pipeline, Mudmat, Impact",

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T1 - Runout of submarine landslides and their impact on subsea infrastructure using material point method

AU - Dong, Youkou

PY - 2017

Y1 - 2017

N2 - The material point method Is adopted to simulate the runout of submarine slides and their impact on subsea Infrastructure. Parallelised code running on graphics processing units yields runtimes about 5% of those for sequential computations.Runout behaviour of centrifuge model tests and real case history are simulated and compared with depth-averaged methods.Different runout mechanisms are observed for different combinations of soil and seabed parameters.Steady force exerted by slides impacting fixed seabed infrastructure are quantified, fitting results with a hybrid model that captures effects due to Inertia, shear strength and static pressure of the sliding material.

AB - The material point method Is adopted to simulate the runout of submarine slides and their impact on subsea Infrastructure. Parallelised code running on graphics processing units yields runtimes about 5% of those for sequential computations.Runout behaviour of centrifuge model tests and real case history are simulated and compared with depth-averaged methods.Different runout mechanisms are observed for different combinations of soil and seabed parameters.Steady force exerted by slides impacting fixed seabed infrastructure are quantified, fitting results with a hybrid model that captures effects due to Inertia, shear strength and static pressure of the sliding material.

KW - Submarine landslide

KW - Material point method

KW - Morphology

KW - Runout

KW - Large deformation

KW - Pipeline

KW - Mudmat

KW - Impact

M3 - Doctoral Thesis

ER -

Runout of submarine landslides and their impact on subsea infrastructure using material point method

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