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Lookup NU author(s): Dr Hao Song
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An eigen-function expansion method based on a new orthogonal inner product is proposed by Sahoo et al. (2000) forthe study of the hydroelastic response of mat-type VLFS in head seas. However, their main emphasis is on the effect of edgeconditions and they assume that the plate is of a semi-infinite length. In reality, the plate is of finite length. For consider-ation of the finite length effect, the reflection and transmission from the other end must be considered. The effect of this re-flection and transmission on the hydroelastic response of VLFS is of interest for practical application. Furthermore, the physi-cal meaning of the new inner product was not given in their paper. In this paper, it is shown that the new inner product canbe derived from the governing equation and the bottom boundary conditions. Then the same eigen-function expansion methodis adopted for the study of the hydroelastic response of an elastic plate of finite length in surface waves. Detailed comparisonsare made between the present finite length model and the semi-infinite model and between the present model predictions andthe experimental results. It is fotmd that that the finite length effect is significant and the accuracy of present model is higherthan the semi-infinite model. Furthermore, a new phenomenon, which is not mentioned in Sahoo et al. (2000), is found.Taht is, for larger L/h ratios, the reflection and transmission coefficients will oscillate with the non-dimensional parameterko h. Further study is needed for full understanding of this phenomenon.
Author(s): Sun H, Song H, Cui WC, Liu YZ
Publication type: Article
Publication status: Published
Journal: China Ocean Engineering
Year: 2002
Volume: 16
Issue: 1
Pages: 21-32
Print publication date: 01/01/2002
ISSN (print): 0890-5487
Publisher: China Ocean Press
URL: http://d.wanfangdata.com.cn/Periodical_zghygc-e200201002.aspx
