Mechanics of ice–structure interaction

Jordaan, Ian

doi:10.1016/s0013-7944(01)00032-7

Cited by 185 publications

(87 citation statements)

References 35 publications

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“…As discussed by Jordaan (2001), brittle behavior is observed in the medium scale (order of a square meter) for rates higher than a few millimeters per second. The compressive ice failure mode commonly referred to as "crushing" is a complex process involving localization of load into high-pressure zones.…”

Section: Fracture and Damage: Two Distinct Processesmentioning

confidence: 89%

“…Nearer to the center of the hpz, higher confining pressures tend to suppress fracture and promote dynamic recrystallization and local pressure melting. The microstructural changes associated with microcracking, dynamic recrystallization and local pressure melting result in softening of the ice at the iceindenter interface so as to form a 'layer' (Jordaan, 2001). These processes are often collectively referred to as 'damage' processes, since they are the cause underpinning measurable changes (softening) of the macroscopic constitutive behavior of the ice.…”

Section: Fracture and Damage: Two Distinct Processesmentioning

confidence: 99%

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Small-scale laboratory experiments on the indentation failure of polycrystalline ice in compression: Main results and pressure distribution

Wells

Jordaan

Derradji-Aouat³

et al. 2011

Cold Regions Science and Technology

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Section: Fracture and Damage: Two Distinct Processesmentioning

confidence: 89%

Section: Fracture and Damage: Two Distinct Processesmentioning

confidence: 99%

Small-scale laboratory experiments on the indentation failure of polycrystalline ice in compression: Main results and pressure distribution

Wells

Jordaan

Derradji-Aouat³

et al. 2011

Cold Regions Science and Technology

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“…This is because of the need to understand the ice-failure mode, which is determined by impact velocity, bow shape, buttock angle, contact area, and ice thickness (Jordaan, 2001).…”

Section: Introductionmentioning

confidence: 99%

“…Previous studies show that two types of research activities have been conducted: one is experimental studies (Hawkes and Mellor, 1972) on the estimation of material characteristics, and the other (Blanchet, 1998;Jordaan, 2001) is tests conducted to understand the ice-structure interaction. From the viewpoint of ice-load estimation, Sodhi et al (1998) and Daley et al (1998) carried out ice-structure indentation tests in order to estimate ice pressure and observe the contact area during an impact.…”

Section: Introductionmentioning

confidence: 99%

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Suggestion of a design load equation for ice-ship impacts

Choi¹,

Choi²,

Lee³

et al. 2012

International Journal of Naval Architecture and Ocean Engineeri

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Strength‐limiting mechanisms in high‐confinement brittle‐like failure: Adiabatic transformational faulting

Renshaw

Schulson

2017

JGR Solid Earth

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Brittle‐like failure under high confinement impacts many geophysical phenomena, including earthquakes at depths beyond a few tens of kilometers. We reanalyze recent observations of high‐confinement brittle‐like failure of nominally thermodynamically stable ice and antigorite and show that the brittle‐like failure only occurs when the strain rate within an incipient adiabatic instability accelerates to the point that the attendant increase in localized temperature approaches a phase transition temperature, initiating transformational faulting. We test a closed‐form model for this process based on independently measureable parameters by comparing model predictions to observations of brittle‐like failure of ice and antigorite under high confinement. Model results do not constrain the mechanism of transformational faulting. However, the similarity of brittle‐like failure characteristics across a variety of geologic materials suggests a similarity of process. We propose that localized heating due to an adiabatic instability initiates dynamic recrystallization near the phase transformational temperature. Transformational superplasticity during recrystallization concentrates plastic strain ahead of the transformed region, causing dynamic recrystallization there and propagating slip in an autocatalytic manner. The newly recrystallized grains rapidly harden as strain accumulates, limiting the stress drop. As the recrystallized grains harden and the stress increases, localized heating reinitiates the adiabatic instability in the still warm region, concentrating plastic strain due to thermal softening and initiating another wave of dynamic recrystallization and partial stress drop. This process, termed adiabatic transformational faulting, could explain how deep earthquakes can propagate beyond the metastable wedge since the propagation of slip is due to dynamic recrystallization rather than to the primary phase transformation.

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Mechanics of ice–structure interaction

Cited by 185 publications

References 35 publications

Small-scale laboratory experiments on the indentation failure of polycrystalline ice in compression: Main results and pressure distribution

Small-scale laboratory experiments on the indentation failure of polycrystalline ice in compression: Main results and pressure distribution

Suggestion of a design load equation for ice-ship impacts

Strength‐limiting mechanisms in high‐confinement brittle‐like failure: Adiabatic transformational faulting

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