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Wave-Induced Fracture of a Sea-Ice Analog.
B Auvity1, L Duchemin1, A Eddi1
1Université Paris Cité, Sorbonne Université, PSL University, CNRS, ESPCI, PMMH Lab, 7 quai Saint Bernard, 75005 Paris, France.
Physical Review Letters
|January 26, 2026
Summary
Researchers studied brittle sheet rupture from wave forces. Fracture occurs at maximum curvature, driven by an energy criterion, not critical stress, suggesting new sea ice fracture models.
Area of Science:
- Materials Science
- Fluid Dynamics
- Geophysics
Background:
- Ocean waves induce mechanical stress on floating materials like sea ice.
- Understanding fracture mechanics is crucial for predicting material failure under dynamic loading.
Purpose of the Study:
- Investigate the rupture mechanics of thin, brittle floating sheets under wave forcing.
- Determine the primary criterion governing fracture initiation and propagation.
Main Methods:
- Laboratory-scale experiments simulating wave-induced forcing on brittle sheets.
- Analysis of fracture locations, stress, and energy release rates.
- Correlation of fracture behavior with wave properties (wavelength, geometry).
Main Results:
- Rupture consistently initiated at points of maximum curvature.
- Fracture threshold depended significantly on wave properties.
- Observed critical stress for fracture varied with forcing wavelength, contradicting a simple stress criterion.
- Measurements aligned with an energy-based fracture criterion.
Conclusions:
- Fracture propagation is governed by an energy balance between material surface energy and released elastic energy.
- Wave forcing geometry plays a critical role in fracture.
- Existing numerical models for sea ice fracture may need revision based on these energy-criterion findings.
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