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Deformation characteristics and constitutive model of seafloor massive sulfides

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Abstract

Deformation characteristics and constitutive model of seafloor massive sulfide (SMS) were selected as the research object. Uniaxial/triaxial compression test were carried out on the mineral samples, and the deformation characteristics of specimens under various conditions were studied. According to characteristics of the mineral, a new three stages constitutive equation was proposed. The conclusions are as follows: The axial strain, peak strain and maximum strength of seafloor massive sulfide increase with the confining pressure. The elastic modulus of the metal sulfide samples is decreased sharply with the increase of confining pressure. According to characteristics of seafloor massive sulfide, the constitutive equation is divided into three parts, the comparison between theoretical curves and experimental data shows that both of them are in good agreement, which also proves the correctness of the constitutive equation for uniaxial compression.

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Authors and Affiliations

  1. School of Mechanical and Electrical Engineering, Central South University, Changsha, 410083, China

    Jian-hua Hu  (胡建华), Shao-jun Liu  (刘少军), Rui-qiang Zhang  (张瑞强) & Qiong Hu  (胡琼)

  2. State Key Laboratory of Deep Sea Mineral Resources Development and Utilization Technology, Changsha, 410012, China

    Jian-hua Hu  (胡建华), Shao-jun Liu  (刘少军), Rui-qiang Zhang  (张瑞强) & Qiong Hu  (胡琼)

  3. Shenzhen Research Institute of Central South University, Shenzhen, 518000, China

    Jian-hua Hu  (胡建华), Shao-jun Liu  (刘少军), Rui-qiang Zhang  (张瑞强) & Qiong Hu  (胡琼)

Authors
  1. Jian-hua Hu  (胡建华)
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  2. Shao-jun Liu  (刘少军)
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  3. Rui-qiang Zhang  (张瑞强)
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  4. Qiong Hu  (胡琼)
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Corresponding author

Correspondence to Shao-jun Liu  (刘少军).

Additional information

Foundation item: Project(2012AA091291) supported by the National High-tech Research and Development Program of China; Project(51074179) supported by the National Natural Science Foundation of China; Projects(JCYJ20130401160614378, JCYJ20140506150310437) supported by Shenzhen Science and Technology Innovation Basic Research Foundation, China

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Hu, Jh., Liu, Sj., Zhang, Rq. et al. Deformation characteristics and constitutive model of seafloor massive sulfides. J. Cent. South Univ. 24, 1986–1991 (2017). https://doi.org/10.1007/s11771-017-3607-5

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  • DOI: https://doi.org/10.1007/s11771-017-3607-5

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