A hypoplastic model for gas hydrate-bearing sandy sediments
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 s...
Published in: | International Journal for Numerical and Analytical Methods in Geomechanics |
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Online Access: | http://dspace.imech.ac.cn/handle/311007/77927 https://doi.org/10.1002/nag.2772 |
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ftchinacadsimech:oai:dspace.imech.ac.cn:311007/77927 2023-05-15T17:12:01+02:00 A hypoplastic model for gas hydrate-bearing sandy sediments 张旭辉 Lin J 鲁晓兵 Liu LL Liu CL Li MY 苏业旺 2018-05-01 http://dspace.imech.ac.cn/handle/311007/77927 https://doi.org/10.1002/nag.2772 英语 eng INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS http://dspace.imech.ac.cn/handle/311007/77927 http://dx.doi.org/10.1002/nag.2772 doi:10.1002/nag.2772 null effective porosity gas hydrate-bearing sediment hypo-plastic model strain hardening strain softening ARTIFICIAL METHANE-HYDRATE MECHANICAL-PROPERTIES CONSTITUTIVE MODEL BEHAVIOR STRENGTH DISSOCIATION Engineering Geological Materials Science Multidisciplinary Mechanics 二类 期刊论文 2018 ftchinacadsimech https://doi.org/10.1002/nag.2772 2022-12-19T18:23:47Z 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. Report Methane hydrate IMECH-IR (Institute of Mechanics, Chinese Academy of Sciences) International Journal for Numerical and Analytical Methods in Geomechanics 42 7 931 942 |
institution |
Open Polar |
collection |
IMECH-IR (Institute of Mechanics, Chinese Academy of Sciences) |
op_collection_id |
ftchinacadsimech |
language |
English |
topic |
effective porosity gas hydrate-bearing sediment hypo-plastic model strain hardening strain softening ARTIFICIAL METHANE-HYDRATE MECHANICAL-PROPERTIES CONSTITUTIVE MODEL BEHAVIOR STRENGTH DISSOCIATION Engineering Geological Materials Science Multidisciplinary Mechanics 二类 |
spellingShingle |
effective porosity gas hydrate-bearing sediment hypo-plastic model strain hardening strain softening ARTIFICIAL METHANE-HYDRATE MECHANICAL-PROPERTIES CONSTITUTIVE MODEL BEHAVIOR STRENGTH DISSOCIATION Engineering Geological Materials Science Multidisciplinary Mechanics 二类 张旭辉 Lin J 鲁晓兵 Liu LL Liu CL Li MY 苏业旺 A hypoplastic model for gas hydrate-bearing sandy sediments |
topic_facet |
effective porosity gas hydrate-bearing sediment hypo-plastic model strain hardening strain softening ARTIFICIAL METHANE-HYDRATE MECHANICAL-PROPERTIES CONSTITUTIVE MODEL BEHAVIOR STRENGTH DISSOCIATION Engineering Geological Materials Science Multidisciplinary Mechanics 二类 |
description |
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. |
format |
Report |
author |
张旭辉 Lin J 鲁晓兵 Liu LL Liu CL Li MY 苏业旺 |
author_facet |
张旭辉 Lin J 鲁晓兵 Liu LL Liu CL Li MY 苏业旺 |
author_sort |
张旭辉 |
title |
A hypoplastic model for gas hydrate-bearing sandy sediments |
title_short |
A hypoplastic model for gas hydrate-bearing sandy sediments |
title_full |
A hypoplastic model for gas hydrate-bearing sandy sediments |
title_fullStr |
A hypoplastic model for gas hydrate-bearing sandy sediments |
title_full_unstemmed |
A hypoplastic model for gas hydrate-bearing sandy sediments |
title_sort |
hypoplastic model for gas hydrate-bearing sandy sediments |
publishDate |
2018 |
url |
http://dspace.imech.ac.cn/handle/311007/77927 https://doi.org/10.1002/nag.2772 |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_relation |
INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS http://dspace.imech.ac.cn/handle/311007/77927 http://dx.doi.org/10.1002/nag.2772 doi:10.1002/nag.2772 |
op_rights |
null |
op_doi |
https://doi.org/10.1002/nag.2772 |
container_title |
International Journal for Numerical and Analytical Methods in Geomechanics |
container_volume |
42 |
container_issue |
7 |
container_start_page |
931 |
op_container_end_page |
942 |
_version_ |
1766068772679974912 |