Peridynamic modeling and simulation of thermo-mechanical fracture in inhomogeneous ice

Song, Ying; Li, Shaofan; Li, Yunbo

doi:10.1007/s00366-022-01616-7

Cited by 22 publications

(2 citation statements)

References 66 publications

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“…Icebreaking resistance.Lu etal. [19] used the extended finite element method to study the extension mechanism of ice cracks in the presence of initial edge defects.Wang and Zou [20] studied the dynamic structural response of ice based on the finite element method, and obtained the deformation damage and energy change of ice.Song etal [21] established a non-homogeneous ice near-field dynamics model, explored the crack extension of the thermal coupling of the ice cap, and clarified the micro Timco and Weeks [22] explored and reviewed the physico-mechanical properties of sea ice of one or more years of age, and concluded that the ice fracture toughness depends on the loading rate and ice type,and summarised that the ice fracture toughness values are in the range of 115~250 kPa-m 0.5 .Xu,Y [23] etal. measured the pure mode I of freshwater ice at different loading rates by using the central-cracked Brazilian disc (CCBD) specimen.…”

Section: Introductionmentioning

confidence: 99%

Antarctic ice microstructure and experimental study of Brazilian splitting

Luo,

Lv,

et al. 2024

Preprint

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Tensile strength is one of the fundamental mechanical parameters of Antarctic ice. Due to the challenges associated with direct tensile testing, this study employs the Brazilian disc splitting test to indirectly measure the tensile strength of Antarctic ice. Initially, ice cores drilled from the ice cap near Zhongshan Station in Antarctica were processed into Brazilian split disc specimens using a lathe. The microstructure and chemical composition of the ice specimens, including concentrations of\(\:{\text{C}\text{l}}^{-},{\text{N}\text{O}}_{3}^{-}\),and\(\:{\text{S}\text{O}}_{4}^{2-}\),were analyzed.Simultaneously, a high-pressure low-temperature triaxial instrument was utilized for loading to obtain stress-strain relationship curves under different loading rates, thereby exploring the effects of loading rate on tensile strength and elastic modulus.Using near-field dynamics and deformation field analysis, the Brazilian splitting damage process was simulated to elucidate the tensile damage behavior of the ice samples. The results indicate that the Antarctic ice structure is granular and isotropic, with mechanical properties independent of crystal orientation. Consequently, loading in vertical and horizontal directions does not affect the tensile strength of Antarctic ice. Among the four primary ions,chloride (\(\:{\text{C}\text{l}}^{-})\)has the highest concentration, reflecting ocean-atmosphere interactions; sulfate (\(\:{\text{S}\text{O}}_{4}^{2-}\)) is the second most abundant, originating from ocean spray and human activities; and nitrate (\(\:{\text{N}\text{O}}_{3}^{-}\))primarily derives from atmospheric nitrogen oxides.Both the tensile strength and elastic modulus of the ice samples increase with loading rate.At a loading rate of 0.12mm/min,the minimum tensile strength is 0.32MPa,whereas at a loading rate of 3.72mm/min,the maximum tensile strength is 0.453MPa.Similarly,at a loading rate of 0.12mm/min,the minimum elastic modulus is 0.183GPa, and at a loading rate of 1.98mm/min,the maximum elastic modulus is 0.479GPa.Simulation of the damage process morphology and transverse displacement field distribution reveals the tensile damage behavior of Antarctic ice: under high loading rates (1.98 ~ 3.72mm/min) the ice specimens rapidly exhibit significant cracking;under low loading rates (0.11 ~ 0.35mm/min) the damage process predominantly involves three stages: crack initiation, crack propagation, and specimen failure.

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Section: Introductionmentioning

confidence: 99%

Antarctic ice microstructure and experimental study of Brazilian splitting

Luo,

Lv,

et al. 2024

Preprint

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“…Zhang et al proposed a bond-based PD, fully coupled, thermomechanical model for simulation of the fracture in quasi-brittle materials [28]. Song et al adopted PD to develop an inhomogeneous sea ice model and applied it to simulate crack propagation in a thermomechanical field [29]. Li proposed a weak form of bond-associated PD model for thermomechanical analysis of orthotropic structures [30].…”

Section: Introductionmentioning

confidence: 99%

Thermomechanical Peridynamic Modeling for Ductile Fracture

et al. 2023

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In this paper, we propose a modeling method based on peridynamics for ductile fracture at high temperatures. We use a thermoelastic coupling model combining peridynamics and classical continuum mechanics to limit peridynamics calculations to the failure region of a given structure, thereby reducing computational costs. Additionally, we develop a plastic constitutive model of peridynamic bonds to capture the process of ductile fracture in the structure. Furthermore, we introduce an iterative algorithm for ductile-fracture calculations. We present several numerical examples illustrating the performance of our approach. More specifically, we simulated the fracture processes of a superalloy structure in 800 ℃ and 900 ℃ environments and compared the results with experimental data. Our comparisons show that the crack modes captured by the proposed model are similar to the experimental observations, verfying the validity of the proposed model.

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Coupled neutronic–thermal–mechanical analysis of a nuclear fuel pellet using peridynamics

Hao,

Liu,

et al. 2024

Engineering with Computers

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Peridynamic modeling and simulation of thermo-mechanical fracture in inhomogeneous ice

Cited by 22 publications

References 66 publications

Antarctic ice microstructure and experimental study of Brazilian splitting

Antarctic ice microstructure and experimental study of Brazilian splitting

Thermomechanical Peridynamic Modeling for Ductile Fracture

Coupled neutronic–thermal–mechanical analysis of a nuclear fuel pellet using peridynamics

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