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Dynamic impact between a viscoelastic ice floe and a rigid structure
A one-dimensional wave analysis of the stress and velocity in a uniform ice plate impacting a rigid structure at low velocity, driven by the net effects of wind and ocean drag, determines the histories of stress on the structures and the motion of the plate. A linear viscoelastic ice response law is...
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Published in: | Cold regions science and technology 1996, Vol.24 (1), p.7-28 |
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Main Author: | |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | A one-dimensional wave analysis of the stress and velocity in a uniform ice plate impacting a rigid structure at low velocity, driven by the net effects of wind and ocean drag, determines the histories of stress on the structures and the motion of the plate. A linear viscoelastic ice response law is adopted which incorporates primary, secondary and tertiary creep effects consistent with observed (non-linear) response at a constant stress chosen to be a typical maximum magnitude. The linear elastic solution is a trivial special case. Comparisons are made with the corresponding quasistatic analysis, which neglects the non-rigid body accelerations and wave effects. A quasistatic treatment may be considered an approximation for low velocity impact, but the comparisons show otherwise. A non-linear elastic quasistatic solution is also compared. |
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ISSN: | 0165-232X 1872-7441 |
DOI: | 10.1016/0165-232X(95)00010-9 |