A hypoplastic model for gas hydrate-bearing sandy sediments

doi:10.1002/nag.2772

IMECH-IR > 流固耦合系统力学重点实验室

	A hypoplastic model for gas hydrate-bearing sandy sediments
	Zhang XH(张旭辉); Lin J; Lu XB(鲁晓兵); Liu LL; Liu CL ; Li MY ; Su YW(苏业旺)
发表期刊	INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS
	2018-05-01
卷号	42 期号:7 页码:931-942
ISSN	0363-9061
摘要	Gas hydrate-bearing sediments (GHBSs) have been considered as a potential energy resource. In this paper, the mechanical properties of GHBS are firstly investigated by the integrated test apparatus for synthesis of GHBS using silty sand as skeleton. Triaxial tests indicate an obvious transition of stress-strain relationship from strain hardening under low hydrate saturation and strain softening under high hydrate saturation. The hypoplastic models coupled with Drucker-Prager criterion and the Mohr-Coulomb criterion are proposed to analyze the stress-strain relationship of GHBS with considering the effective porosity because of the hydrate filling in the pores of GHBS. The strain hardening and softening behaviors are well predicted with less material parameters compared with the classical models. Compared with the test results, the proposed hypoplastic models are verified to be capable of capturing the salient features of the mechanical behaviors of GHBS under the conditions of little temperature change and no hydrate dissociation.
关键词	effective porosity gas hydrate-bearing sediment hypo-plastic model strain hardening strain softening
DOI	10.1002/nag.2772
URL	查看原文
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000429712000003
关键词[WOS]	ARTIFICIAL METHANE-HYDRATE ; MECHANICAL-PROPERTIES ; CONSTITUTIVE MODEL ; BEHAVIOR ; STRENGTH ; DISSOCIATION
WOS研究方向	Engineering, Geological ; Materials Science, Multidisciplinary ; Mechanics
WOS类目	Engineering ; Materials Science ; Mechanics
项目资助者	National Natural Science Foundation in China [41376078, 51639008] ; Youth Innovation Promotion Association CAS ; State Key Laboratory of Hydroscience and Engineering, Tsinghua University [sklhse-2017-D-02] ; China Geological Survey [DD20160216]
论文分区	二类
力学所作者排名	1
引用统计	被引频次：18[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/77927
专题	流固耦合系统力学重点实验室非线性力学国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 3.Univ Nat Resources & Life Sci, Vienna, Austria 4.Qingdao Inst Marine Geol, Qingdao, Peoples R China 5.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China 6.Tsinghua Univ, State Key Lab Hydrosci & Engn, Beijing 100084, Peoples R China
推荐引用方式 GB/T 7714	Zhang XH,Lin J,Lu XB,et al. A hypoplastic model for gas hydrate-bearing sandy sediments[J]. INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS,2018,42,7,:931-942.
APA	张旭辉.,Lin J.,鲁晓兵.,Liu LL.,Liu CL.,...&苏业旺.(2018).A hypoplastic model for gas hydrate-bearing sandy sediments.INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS,42(7),931-942.
MLA	张旭辉,et al."A hypoplastic model for gas hydrate-bearing sandy sediments".INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS 42.7(2018):931-942.

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