JZUS - Journal of Zhejiang University SCIENCE

Journal of Zhejiang University SCIENCE A

Accepted manuscript available online (unedited version)

A novel shear damage model of the shear deformation and failure process of gas hydrate-bearing sediments

Author(s): Hui WANG, Bo ZHOU
Affiliation(s): College of Pipeline and Civil Engineering, China University of Petroleum (East China), Qingdao, China; more
Corresponding email(s): zhoubo@upc.edu.cn
Key Words: Gas hydrate-bearing sediments (GHBS); Shear damage model; Homogenization theory; Modified Mohr-Coulomb criterion; Damage evolution

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Hui WANG, Bo ZHOU. A novel shear damage model of the shear deformation and failure process of gas hydrate-bearing sediments[J]. Journal of Zhejiang University Science A,in press.Frontiers of Information Technology & Electronic Engineering,in press.https://doi.org/10.1631/jzus.A2300373

@article{title="A novel shear damage model of the shear deformation and failure process of gas hydrate-bearing sediments",
author="Hui WANG, Bo ZHOU",
journal="Journal of Zhejiang University Science A",
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doi="https://doi.org/10.1631/jzus.A2300373"
}

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doi="https://doi.org/10.1631/jzus.A2300373"

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doi="https://doi.org/10.1631/jzus.A2300373"

Abstract
Chinese Summary
Academic Network
Reviewer Comment

Abstract: A novel shear damage model based on homogenization theory and a modified Mohr-Coulomb criterion is proposed to predict the full deformation process of gas hydrate-bearing sediments (GHBS) during shearing by analyzing micro-mechanisms of shear deformation and failure characteristics. Then, the physical significance of the model’s parameters is explored. Finally, the damage evolution and shear stress partition inside GHBS during the shearing process are analyzed in detail. The results show that model parameters have clear physical meaning, and the shear damage model is capable of reflecting the nonlinear deformation and strain softening characteristics of GHBS due to its ability to better describe the damage evolution and shear stress partition mechanisms inside GHBS during the shearing process. Comparisons of experimental and theoretical results show that the global performance of the novel shear damage model is satisfactory. The model is expected to be widely adopted to analyze submarine landslide instability due to hydrate dissociation.

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