Moving load in an ice channel with a crack

Zeng, Ling-yu; Korobkin, A.A.; Ni, Baoyu; Yang, Xue

doi:10.1016/j.apor.2022.103086

Cited by 5 publications

(6 citation statements)

References 22 publications

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“…On the other hand, for a given total load and length of the pressure surface, the strain in the ice sheet increases as the load is narrowed. However, the maximum ice-breaking ability of the pressure surface does not change significantly when its width is less than 1/10 of its length (Zeng et al, 2022).…”

Section: Ice Channel With Two Side Wallsmentioning

confidence: 93%

“…Different from the second critical speed c cr, 2 = gH in an infinite ice sheet, which is independent of the ice parameters, the second critical speed in an ice channel is affected by the parameters of the ice plate, the channel parameters, and cracks in the ice sheet (Zeng, 2022). Zeng et al (2022) studied the problem of FGWs produced by a uniform and rectangular pressure surface moving along an ice-covered channel with a crack in the center plane of the channel, using the Kelvin-Voigt model for the viscoelastic ice. The ice sheets on both sides of the crack were clamped to the walls of the channel, and the pressure surface was symmetric about the center line of the ice channel.…”

Section: Ice Channel With Two Side Wallsmentioning

confidence: 99%

“…As the ice thickness increases, the maximum strains decrease both along the crack and at the wall of the channel, which is the same as the trend when the water depth in a channel increases. Zeng et al (2022) found that both the length and width of the pressure surface seriously affect its maximum ice-breaking ability. For a given total load and width of the pressure surface, the maximum ice-breaking ability gradually weakens when the load is elongated along the channel.…”

Section: Ice Channel With Two Side Wallsmentioning

confidence: 99%

See 2 more Smart Citations

A Review of Ice Deformation and Breaking Under Flexural-Gravity Waves Induced by Moving Loads

Ni,

Xiong,

Han

et al. 2024

J. Marine. Sci. Appl.

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Ice-breaking methods have become increasingly significant with the ongoing development of the polar regions. Among many ice-breaking methods, ice-breaking that utilizes a moving load is unique compared with the common collision or impact methods. A moving load can generate flexural-gravity waves (FGWs), under the influence of which the ice sheet undergoes deformation and may even experience structural damage. Moving loads can be divided into above-ice loads and underwater loads. For the above-ice loads, we discuss the characteristics of the FGWs generated by a moving load acting on a complete ice sheet, an ice sheet with a crack, and an ice sheet with a lead of open water. For underwater loads, we discuss the influence on the ice-breaking characteristics of FGWs of the mode of motion, the geometrical features, and the trajectory of motion of the load. In addition to discussing the status of current research and the technical challenges of ice-breaking by moving loads, this paper also looks ahead to future research prospects and presents some preliminary ideas for consideration.

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Section: Ice Channel With Two Side Wallsmentioning

confidence: 93%

Section: Ice Channel With Two Side Wallsmentioning

confidence: 99%

Section: Ice Channel With Two Side Wallsmentioning

confidence: 99%

See 1 more Smart Citation

A Review of Ice Deformation and Breaking Under Flexural-Gravity Waves Induced by Moving Loads

Ni,

Xiong,

Han

et al. 2024

J. Marine. Sci. Appl.

View full text Add to dashboard Cite

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“…Mathematical models with proper 2D modeling of the ice sheet were considered, for example, in [21][22][23][24][25][26]. Typically, an ice cover is modeled as a thin elastic [21], viscoelastic [23,24] or poroelastic plate within the linear theory of hydroelasticity.…”

Section: Introductionmentioning

confidence: 99%

Dipole Oscillations along Principal Coordinates in a Frozen Channel in the Context of Symmetric Linear Thickness of Porous Ice

Shishmarev,

Sibiryakova,

Naydenova

et al. 2024

JMSE

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The problem of periodic oscillations of a dipole, specifically its strength, along the principal axes in a three-dimensional frozen channel is considered. The key points of the problem are taking into account the linear thickness of ice across the channel and ice porosity within Darcy’s law. The fluid in the channel is inviscid and incompressible; the flow is potential. It is expected that the oscillations of a small radius dipole well approximate the oscillations of a small radius sphere at a sufficient depth of immersion of the dipole. It was found that during oscillations along the channel and vertical oscillations, waves are generated in the channel, propagating along the channel with a frequency equal to the frequency of dipole oscillations. These waves decay far from the dipole, and the rate of decay depends on the porosity coefficient.

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“…One of these waves propagates behind the load, and another one ahead of the load. The problem of a load moving along the frozen channel with a crack was studied in [21,22]. The main focus of the study was on the effect of a crack in the ice cover of a channel on strains and deflections of the ice sheet.…”

Section: Introductionmentioning

confidence: 99%

Steady-State Motion of a Load on an Ice Cover with Linearly Variable Thickness in a Channel

Shishmarev,

Khabakhpasheva,

Oglezneva

2023

JMSE

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The paper considers the visco-elastic response of the ice cover in a channel under an external load moving with constant speed along the center line. The channel has a rectangular cross-section with a finite depth and width. The fluid in the channel is inviscid and incompressible and its motion is potential. The fluid is covered by a thin sheet of ice frozen to the channel walls. The ice thickness varies linearly symmetrically across the channel, being lowest at the center of the channel and highest at the channel walls. Ice deflections and strains in the ice cover are independent of time in the coordinate system moving with the load. The problem is solved numerically using Fourier transform along the channel and the method of normal modes across the channel. The series coefficients for normal modes are determined by truncation for the resulting infinite systems of linear algebraic equations. The ice deflections and strains in the ice plate are investigated and compared to the case of constant mean ice thickness. It is shown that even a small variation of the ice thickness significantly changes the characteristics of the hydroelastic waves in the channel.

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Moving load in an ice channel with a crack

Cited by 5 publications

References 22 publications

A Review of Ice Deformation and Breaking Under Flexural-Gravity Waves Induced by Moving Loads

A Review of Ice Deformation and Breaking Under Flexural-Gravity Waves Induced by Moving Loads

Dipole Oscillations along Principal Coordinates in a Frozen Channel in the Context of Symmetric Linear Thickness of Porous Ice

Steady-State Motion of a Load on an Ice Cover with Linearly Variable Thickness in a Channel

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