Analysis of Floating Plate under Ocean Waves

by Yi-Kwei Wen, Asst. Prof.; Dept. of Civ. Engrg., Univ. of Illinois, Urbana, IL,
Masanobu Shinozuka, Prof.; Dept. of Civ. Engrg. and Engrg. Mech., Columbia Univ., New York, NY,

Serial Information: Journal of the Waterways, Harbors and Coastal Engineering Division, 1972, Vol. 98, Issue 2, Pg. 177-190

Document Type: Journal Paper


The interactions between a large elastic floating plate and ocean waves are investigated. The plate is moored to the ocean bottom and the type of waves considered are either wind-induced random waves or Tsunami-runup-like tidal waves. The analysis is based on a boundary-value problem formulation; i.e., the plate and ocean together are considered as an integral system and related through the continuity conditions at the fluid-solid interface. The wind-induced random waves are simulated through a digital computer according to the spectrum of ocean surface elevation and the response analyses are performed in the time domain using a technique consisting of modal expansion and numerical integration. The results show that a large floating plate with or without anchors can be excited by waves with wave length comparable to the width of the plate producing very large bending moments.

Subject Headings: Random waves | Ocean waves | Plates | Wind forces | Numerical models | Elastic analysis | Mooring | Tsunamis

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