Mechanical Behavior of Sea Ice

• Main Author: Mellor,Malcolm
• Other Authors: COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH
• Format: Text
• Language: English
• Published: 1983
• Subjects: Snow; Ice and Permafrost; Mechanics; *Ice; *Sea ice; *Deformation; *Fracture(Mechanics); Mechanical properties; Rheology; Polycrystalline; Strain(Mechanics); Strength(Mechanics); Stress strain relations; Elastic properties; Temperature; Porosity; Salinity; Grain size; Thermal stresses; Mathematical models; Brash ice; Ice; permafrost; Sea ice
• Online Access: http://www.dtic.mil/docs/citations/ADA131852; http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA131852

The first part of the report provides an introduction to the mechanics of deformable solids, covering the basic ideas of stress and strain, rheology, equilibrium equations, strain/displacement relations, constitutive equations, and failure criteria. Fracture mechanics and fracture toughness are also reviewed briefly. The second part summarizes available data on the mechanical properties of freshwater ice and saline ice, accounting for the influences of strain rate and loading rate, temperature, porosity, salinity, and grain size. Boundary value problems are not dealt with, but there is discussion of some miscellaneous topics, including thermal strains, behavior of brash ice, and pressure ridges. The report was written as a study text for a NATO Advanced Study Institute on Sea/Ice/Air Interactions, and was intended to be used in conjunction with companion texts on related topics. This report was written during the summer of 1981, and thus does not cover all results which appeared after the end of 1981.