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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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Bibliographic Details
Published in:Cold regions science and technology 1996, Vol.24 (1), p.7-28
Main Author: Morland, L.W.
Format: Article
Language:English
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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.
ISSN:0165-232X
1872-7441
DOI:10.1016/0165-232X(95)00010-9