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<p>A hypoplastic model is proposed to simulate the mechanical properties of hydrate-bearing sand during dissociation by incorporating relative breakage ratio, hydrate bonding force, and degradation solid hardness. The relative breakage ratio and an internal tensor are introduced to describe the effect of grain breakage and hydrate bonding force of hydrate-bearing sand. Moreover, the evolution of the solid hardness is used for the creep behavior of the hydrate-bearing sand. The validation of model performance is conducted by simulating different types of laboratory experiments, including triaxial compression and dissociation tests of hydrate-bearing sand.</p>

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A hypoplastic model for hydrate dissociation considering grain breakage

  • 期刊论文

  • 发表日期：

    2025年9月11日

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  • Haoyong Qian,
  • Wei Wu,
  • Chengshun Xu,
  • Jialin Xu,
  • Xiuli Du

摘要

A hypoplastic model is proposed to simulate the mechanical properties of hydrate-bearing sand during dissociation by incorporating relative breakage ratio, hydrate bonding force, and degradation solid hardness. The relative breakage ratio and an internal tensor are introduced to describe the effect of grain breakage and hydrate bonding force of hydrate-bearing sand. Moreover, the evolution of the solid hardness is used for the creep behavior of the hydrate-bearing sand. The validation of model performance is conducted by simulating different types of laboratory experiments, including triaxial compression and dissociation tests of hydrate-bearing sand.