Confined compression tests : Outlining the failure envelope of columnar sea ice
A series of confined compression tests has been performed on columnar sea ice over a range of nominal strain rates of 10⁻⁵ to 10⁻³ s⁻¹ at a temperature of -2°C. Both the applied load and side confining load were measured. These are used to outline the full 3-dimensional failure envelope of the ice....
| Published in: | Cold Regions Science and Technology |
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| Main Authors: | , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
1986
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| Subjects: | |
| Online Access: | https://doi.org/10.1016/0165-232X(86)90016-9 https://nrc-publications.canada.ca/eng/view/object/?id=252ef7d0-9454-487c-9c08-29d2e994822b https://nrc-publications.canada.ca/fra/voir/objet/?id=252ef7d0-9454-487c-9c08-29d2e994822b |
| Summary: | A series of confined compression tests has been performed on columnar sea ice over a range of nominal strain rates of 10⁻⁵ to 10⁻³ s⁻¹ at a temperature of -2°C. Both the applied load and side confining load were measured. These are used to outline the full 3-dimensional failure envelope of the ice. The results are discussed in terms of loading rate effects, temperature, brine volume and air porosity. A strength index is introduced which correlates the present results in terms of these parameters. This leads to an empirical relationship which gives the functional dependence of the uni-axial compressive strength in terms of strain rate, loading direction, salinity, temperature and ice density. A mathematical description of the failure envelope is presented using a modified n-type yield function. NRC publication: Yes |
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