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Establishment and Development of Elastic-plastic Constitutive Model of Gas Hydrate-bearing Sediments
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Zheng-bo JIANG1, Qing-meng YUAN2, 3, *, Zhou-xing LI1
Science Technology and Engineering | 2025, 25(11) : 4706 - 4712
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Science Technology and Engineering | 2025, 25(11): 4706-4712
• Papers·Architectural Science •
Establishment and Development of Elastic-plastic Constitutive Model of Gas Hydrate-bearing Sediments
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Zheng-bo JIANG1, Qing-meng YUAN2, 3, *, Zhou-xing LI1
Affiliations
  • 1 Marine Engineering Technology Research and Development Center Research, Institute of Tsinghua University in Shenzhen, Shenzhen 518000, China
  • 2 Guangzhou Marine Geological Survey, National Engineering Research Center for Gas Hydrate Exploration and Development, Guangzhou Marine Geological Survey, Guangzhou 511458, China
  • 3 School of Science, Qingdao University of Technology, Qingdao 266033, China
Published: 2025-04-18 doi: 10.12404/j.issn.1671-1815.2402853
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The stress-strain characteristics of gas hydrate-bearing sediments (GHBS) are essential for achieving safe and secure extraction of marine natural gas hydrate. To quantitatively investigate the influence of hydrate formation on the mechanical properties of GHBS, laboratory tests were conducted under different confining pressures and various hydrate saturations, and it was found that hydrate primarily enhanced the cohesive strength of GHBS, while the internal friction angle remained relatively unchanged. To comprehensively describe the intricate mechanical properties of GHBS, the previously established elastic-plastic constitutive model was employed for predictive purposes. A comparative analysis revealed that the constitutive model exhibited a certain level of applicability. Subsequently, a computer program was developed for the constitutive model by leveraging the UMAT user material subroutine interface provided by ABAQUS. The program was written in FORTRAN language and integrated into ABAQUS, facilitating the implementation of the constitutive model. To validate the effectiveness and stability of the developed model, finite element simulations were conducted on single elements as well as triaxial specimens of GHBS. The results of these simulations confirm the efficacy and reliability of the developed model.

gas hydrate-bearing sediments  /  cementation  /  constitutive model  /  model development  /  numerical simulation
Zheng-bo JIANG, Qing-meng YUAN, Zhou-xing LI. Establishment and Development of Elastic-plastic Constitutive Model of Gas Hydrate-bearing Sediments[J]. Science Technology and Engineering, 2025 , 25 (11) : 4706 -4712 . DOI: 10.12404/j.issn.1671-1815.2402853
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doi: 10.12404/j.issn.1671-1815.2402853
  • Receive Date：2024-04-19
  • Online Date：2025-07-09
  • Published：2025-04-18
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  • Received：2024-04-19
  • Revised：2024-07-26
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Affiliations
    1 Marine Engineering Technology Research and Development Center Research, Institute of Tsinghua University in Shenzhen, Shenzhen 518000, China
    2 Guangzhou Marine Geological Survey, National Engineering Research Center for Gas Hydrate Exploration and Development, Guangzhou Marine Geological Survey, Guangzhou 511458, China
    3 School of Science, Qingdao University of Technology, Qingdao 266033, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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