A plasticity-based constitutive model for the behavior of soil-structure interfaces under cyclic loading

Hosseinali, Massoud; Toufigh, Vahab

doi:10.1016/j.trgeo.2017.10.001

Cited by 12 publications

(2 citation statements)

References 24 publications

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“…Stutz et al (2016) [8] proposed an enhanced non-plastic interface model that converts existing plastic models with predefined sand limit state surfaces into interface models by reducing stress and tension vectors and redefining tensors. Hosseinali and Toufigh (2018) [9] proposed a new plasticity-based constitutive model that can model strainsoftening behavior in the tangential direction and shear expansion behavior in the normal direction. Saberi et al (2020) [10] continuously revised and improved a two-sided plastic interface constitutive model by introducing factors such as critical state soil mechanics, particle breakage rate, new failure surfaces and 3D shear coupled loads, enabling the interface model to simulate complex behaviors of various soil-structure interfaces, such as stress hardening and softening, stress path dependence, phase transition, cyclic cumulative shrinkage and stability, stress degradation and particle breakage.…”

Section: Introductionmentioning

confidence: 99%

Softening/Hardening Damage Model and Numerical Implementation of Seabed Silt-Steel Interface in Yellow River Underwater Delta

Peng

Liu

Geng

et al. 2023

JMSE

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The interaction between soil and structure is a research hotspot in ocean engineering, and the shear performance of interfaces is an essential factor affecting the bearing capacity of offshore structures. Taking the Yellow River Underwater Delta as the research area, the Softening/Hardening damage model of the silt–steel interface and the determination method of model parameters are proposed based on the statistical damage theory. Through the interface monotonic shear test under the conditions of different normal stress, roughness and water content, the shear mechanical properties and volumetric deformation laws on the silt–steel interface are analyzed, and the damage model parameters are obtained. Finally, a FRIC subroutine for the damage model was developed based on ABAQUS. The research results indicate the following: (1) The interface between silt and steel exhibits two characteristics, softening/hardening and shear shrinkage/expansion, under different conditions. Roughness significantly impacts interfacial cohesion, while water content mainly affects the internal friction angle. (2) The softening model based on the classic rock damage model can better simulate the stress–strain relationship of the silt–steel interface under high normal stress and low water content. In contrast, the hardening model based on the classic hyperbola model can better simulate the stress–strain relationship under low normal stress and high water content. The calculated results of the softening/hardening model agree with the experimental results, and the model has 7 parameters. (3) The developed FRIC subroutine can effectively simulate the nonlinear mechanical behavior of the interface between silt and steel. The research results provide a reference for exploring the stability analysis of offshore structures considering interface weakening effects.

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Section: Introductionmentioning

confidence: 99%

Softening/Hardening Damage Model and Numerical Implementation of Seabed Silt-Steel Interface in Yellow River Underwater Delta

Peng

Liu

Geng

et al. 2023

JMSE

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“…The predictions of the EPR model were compared with the actual data and it was shown that the proposed methodology can extract and reproduce the behavior of the frozen soil with very high accuracy. Hosseinali and Toufigh (2018) proposed a plasticity-based constitutive model for the behavior of soil-structure interfaces under monotonic and cyclic loading. The features of the interface, including the strain softening, phase transformation, steady state, and dilatancy behaviors, were described by the proposed model with satisfactory accuracy.…”

Section: Introductionmentioning

confidence: 99%

SHPB test analysis and a constitutive model for frozen soil under multiaxial loading

Zhu

Cao

2019

International Journal of Damage Mechanics

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A split Hopkinson pressure bar is adopted to test the dynamic mechanical behavior of frozen soil at different temperatures and high strain rates. An aluminum sleeve is used as a passive confining pressure device. Comparing the results of this test with those under the uniaxial state shows that besides the temperature and strain rate effects, frozen soil exhibits obvious stress strengthening characteristics. In addition, the failure mode is viscoplastic instead of brittle. If frozen soil is regarded as a particle-reinforced composite material, then the debonding damage of ice particles and rate-dependent damage of soil matrix are taken into account. Based on this, a dynamic constitutive model of frozen soil under a multiaxial state is proposed. The theoretical results of the model agree well with the experimental results, verifying the rationality and applicability of the model.

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Study thermo-hydro-mechanical coupling behaviors of saturated frozen soil based on granular solid hydrodynamics theory

et al. 2021

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A plasticity-based constitutive model for the behavior of soil-structure interfaces under cyclic loading

Cited by 12 publications

References 24 publications

Softening/Hardening Damage Model and Numerical Implementation of Seabed Silt-Steel Interface in Yellow River Underwater Delta

Softening/Hardening Damage Model and Numerical Implementation of Seabed Silt-Steel Interface in Yellow River Underwater Delta

SHPB test analysis and a constitutive model for frozen soil under multiaxial loading

Study thermo-hydro-mechanical coupling behaviors of saturated frozen soil based on granular solid hydrodynamics theory

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