Hydroelastic slamming |
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Authors: | Odd M Faltinsen |
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Institution: | (1) Department of Marine Hydrodynamics, Norwegian University of Science and Technology, N-7491 Trondheim, Norway, NO |
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Abstract: | An overview of the many water-impact (slamming) problems in ship and ocean engineering is given. Theoretical and experimental
drop tests of horizontal and nearly horizontal elastic plates are reviewed. It is shown that maximum pressure cannot be used
to estimate maximum slamming-induced stresses when maximum pressure is large, because dynamic hydroelastic effects then become
important. Further, the significance of hydroelasticity increases with decreasing dead-rise angle, increasing impact velocity,
and increasing the value of the highest local natural period of the structure. It is emphasized that the slamming problem
must be hydrodynamically studied from a structural point of view. Comparisons between theory and full-scale measurements of
slamming-induced local strains in the wet-deck of a catamaran are presented. The importance of the rigid body vertical accelerations
and the influence of the side-hulls on the impact velocity are pointed out.
Received: October 4, 2000 |
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Keywords: | Slamming Hydroelasticity Wet-deck slamming |
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