Friction of sea ice on sea ice

Sukhorukov, S.T.; Løset, Sveinung

doi:10.1016/j.coldregions.2013.06.005

Cited by 43 publications

(46 citation statements)

References 28 publications

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“…Figure 7 shows that µ k varied with respect to normal stress in the cases of CS-Lateral⊥, Lateral⊥-Lateral//, Lateral⊥-Bottom, and Lateral//-Top, and a general trend was detected for µ k to decrease with increasing normal stress. Similar trends were obtained by Oksanen and Keinonen [21], Maeno et al [24], and Pritchard et al [36]; one reason is that as normal load increases, the natural roughness of both contact surfaces or that of the softer surface is smoothed, yielding lower friction coefficients [36,37]. Mizukami and Maeno [42] and Makkonen and Tikanmäki [43] found that the decrease of µ k with normal stress P could be expressed as a power law µ k ∝ P n , with the power n fitted as −0.32 and −0.25 using laboratory tests and a theoretical model respectively.…”

Section: Effect Of Normal Stresssupporting

confidence: 68%

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In Situ Experimental Study of the Friction of Sea Ice and Steel on Sea Ice

Wang

Lü

et al. 2018

Applied Sciences

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Abstract:The kinetic coefficient of friction µ k was measured for sea ice, stainless steel, and coated steel sliding on a natural sea ice cover. The effects of normal stress (3.10-8.11 kPa), ice columnar grain orientation (vertical and parallel to the sliding direction), sliding velocity (0.02-2.97 m·s -1 ), and contact material were investigated. Air temperature was higher than −5.0 • C for the test duration. The results showed a decline of µ k with increasing normal stress with µ k independent of ice grain orientation. The µ k of different materials varied, partly due to distinct surface roughnesses, but all cases showed a similar increasing trend with increasing velocity because of the viscous resistance of melt-water film. The velocity dependence of µ k was quantified using the rate-and state-dependent model, and µ k was found to increase logarithmically with increasing velocity. In addition, µ k obtained at higher air temperatures was greater than at lower temperatures. The stick-slip phenomenon was observed at a relatively high velocity compared with previous studies, which was partly due to the low-stiffness device used in the field. Based on the experimental data, the calculation of physical models can be compared.

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Section: Effect Of Normal Stresssupporting

confidence: 68%

“…Thus, the regime of stick-slip motion had a saw-tooth shape, and Fourier analysis indicated that load oscillations in the stick-slip motion had a frequency of 30.10 Hz (Figure 5b). The µ k of stick-slip motion was calculated in the same manner as in the steady-slide case [23,37].…”

Section: Friction Regimesmentioning

confidence: 99%

In Situ Experimental Study of the Friction of Sea Ice and Steel on Sea Ice

Wang

Lü

et al. 2018

Applied Sciences

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“…Healing rate versus homologous temperature from this study and other studies on ice and rock. Ice-rock data at PMP from Zoet et al [16]; ice-ice data from Schulson & Fortt [12]; sea ice from Sukhorukov & Loset [49] Quartz from Katayama et al [50]; and granite from Nakatani [51] and Mitchell et al [46]. All other data are from this study.…”

Section: Discussionmentioning

confidence: 99%

Temperature dependence of ice-on-rock friction at realistic glacier conditions

McCarthy

Savage

Nettles

2017

Phil. Trans. R. Soc. A.

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One contribution of 11 to a theme issue 'Microdynamics of ice'. Using a new biaxial friction apparatus, we conducted experiments of ice-on-rock friction in order to better understand basal sliding of glaciers and ice streams. A series of velocity-stepping and slidehold-slide tests were conducted to measure friction and healing at temperatures between −20°C and melting. Experimental conditions in this study are comparable to subglacial temperatures, sliding rates and effective pressures of Antarctic ice streams and other glaciers, with load-point velocities ranging from 0.5 to 100 µm s −1 and normal stress σ n = 100 kPa. In this range of conditions, temperature dependences of both steady-state friction and frictional healing are considerable. The friction increases linearly with decreasing temperature (temperature weakening) from μ = 0.52 at −20°C to μ = 0.02 at melting. Frictional healing increases and velocity dependence shifts from velocity-strengthening to velocityweakening behaviour with decreasing temperature. Our results indicate that the strength and stability of glaciers and ice streams may change considerably over the range of temperatures typically found at the ice-bed interface. Subject Areas: glaciology KeywordsThis article is part of the themed issue 'Microdynamics of ice'.

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“…However, the kinetic friction coefficient between sea ice varies from 0.05 (at −20 °C ) to 0.5 (at −2 °C ) [17]. These temperature trends indicate the intrinsic behavior of ice at different temperature regime or it structure phases.…”

Section: Bi-regime Friction Coefficientmentioning

confidence: 99%

“…The friction coefficient is sensitive to many factors such as pressure, temperature, and the velocity of sliding. Sukhorukov and Loset [17] examined the effects of sliding velocity (6−05 mm/s), air temperatures (−2 to −20 °C ), normal load (300−2,000 N), presence of sea water in the interface, and ice grain orientation with respect to the sliding direction on the friction coefficient of sea ice on itself. The kinetic friction coefficient of sea ice on sea ice varies from 0.05 (at −20 °C ) to 0.5 (at −2 °C ), regardless of the presence of sea water in the sliding interface.…”

Section: Ice On Ice: Pressure Temperature and Velositymentioning

confidence: 99%

From ice superlubricity to quantum friction: Electronic repulsivity and phononic elasticity

Zhang

Huang

et al. 2015

Friction

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Superlubricity means non-sticky and frictionless when two bodies are set contacting motion. Although this occurrence has been extensively investigated since 1859 when Faraday firstly proposed a quasiliquid skin on ice, the mechanism behind the superlubricity remains uncertain. This report features a consistent understanding of the superlubricity pertaining to the slipperiness of ice, self-lubrication of dry solids, and aqueous lubricancy from the perspective of skin bond-electron-phonon adaptive relaxation. The presence of nonbonding electron polarization, atomic or molecular undercoordination, and solute ionic electrification of the hydrogen bond as an addition, ensures the superlubricity. Nonbond vibration creates soft phonons of high magnitude and low frequency with extraordinary adaptivity and recoverability of deformation. Molecular undercoordination shortens the covalent bond with local charge densification, which in turn polarizes the nonbonding electrons making them localized dipoles. The locally pinned dipoles provide force opposing contact, mimicking magnetic levitation and hovercraft. O:H−O bond electrification by aqueous ions has the same effect of molecular undercoordination but it is throughout the entire body of the lubricant. Such a Coulomb repulsivity due to the negatively charged skins and elastic adaptivity due to soft nonbonding phonons of one of the contacting objects not only lowers the effective contacting force but also prevents charge from being transited between the counterparts of the contact. Consistency between theory predictions and observations evidences the validity of the proposal of interface elastic Coulomb repulsion that serves as the rule for the superlubricity of ice, wet and dry frictions, which also reconciles the superhydrophobicity, superlubricity, and supersolidity at contacts.

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Friction of sea ice on sea ice

Cited by 43 publications

References 28 publications

In Situ Experimental Study of the Friction of Sea Ice and Steel on Sea Ice

In Situ Experimental Study of the Friction of Sea Ice and Steel on Sea Ice

Temperature dependence of ice-on-rock friction at realistic glacier conditions

From ice superlubricity to quantum friction: Electronic repulsivity and phononic elasticity

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