Quantification of impact forces on fixed mudmats from submarine landslides using the material point method

doi:10.1016/j.apor.2020.102227

	Quantification of impact forces on fixed mudmats from submarine landslides using the material point method
	Dong, Y.2,3,5; Wang, D.1,6; Randolph, M. F.4
刊名	APPLIED OCEAN RESEARCH
	2020-09-01
卷号	102 页码:10
关键词	Dynamic analysis Impact Material point method Mudmat Submarine landslide
ISSN号	0141-1187
DOI	10.1016/j.apor.2020.102227
英文摘要	Quantification of impact forces from submarine landslides is vital to the safe design of mudmats and other subsea structures that are laid out in the hazard area. In this paper, the dynamic process of the submarine landslides running across a partially-embedded mudmat is analysed using a novel numerical method, the material point method (MPM). The mudmat is simplified as fixed in position, presenting an exposure height and length above the mudline. The seabed is taken as a rigid boundary to exclude the complicated seabed-slide interaction. Increase of the undrained shear strength of the sliding material with its shear strain rate is expressed with the Herschel-Bulkley rheological model. Non-dimensional parameters, the non-Newtonian Reynolds number and the Froude number, are adopted to characterise the kinematic behaviour of the slide. The horizontal steady forces on the mudmat obtained from the MPM analyses are verified by comparison with those using a computational fluid dynamics (CFD) method. An extensive parametric study is then conducted, allowing the forces to be interpreted using a hybrid model considering the combined effects of the inertia of the slide, its shear strength and also the asymmetric static pressure.
资助项目	Australian Research Council[DP120102987] ; Australian Research Council Centre of Excellence for Geotechnical Science and Engineering ; Fugro Chair in Geotechnics ; Lloyd's Register Foundation Chair in Offshore Foundation ; Lloyd's Register Foundation Centre of Excellence in Offshore Foundation ; Shell EMI Chair in Offshore Engineering[CE110001009] ; Open Research Fund of State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences[Z018011] ; Australian Government ; Government of Western Australia ; NVIDIA Corporation
WOS研究方向	Engineering ; Oceanography
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000571959700005
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/24838]
专题	中科院武汉岩土力学所
通讯作者	Dong, Y.
作者单位	1.Ocean Univ China, Shandong Prov Key Lab Marine Environm & Geol Engn, 238 Songling St, Qingdao 266100, Peoples R China 2.Chinese Acad Sci, State Key Lab Geomech & Geotech Engn, Inst Rock & Soil Mech, Wuhan 430071, Peoples R China 3.China Univ Geosci, Coll Marine Sci & Technol, 388 Lumo Rd, Wuhan 430074, Peoples R China 4.Univ Western Australia, Ctr Offshore Fdn Syst, 35 Stirling Highway, Perth, WA 6009, Australia 5.Univ Western Australia, Nedlands, WA, Australia 6.Univ Western Australia, Ctr Offshore Fdn Syst, Nedlands, WA, Australia
推荐引用方式 GB/T 7714	Dong, Y.,Wang, D.,Randolph, M. F.. Quantification of impact forces on fixed mudmats from submarine landslides using the material point method[J]. APPLIED OCEAN RESEARCH,2020,102:10.
APA	Dong, Y.,Wang, D.,&Randolph, M. F..(2020).Quantification of impact forces on fixed mudmats from submarine landslides using the material point method.APPLIED OCEAN RESEARCH,102,10.
MLA	Dong, Y.,et al."Quantification of impact forces on fixed mudmats from submarine landslides using the material point method".APPLIED OCEAN RESEARCH 102(2020):10.