✦ LIBER ✦

NON-LINEAR WAVE-INDUCED RESPONSE OF POROUS SEABED: A FINITE ELEMENT ANALYSIS

✍ Scribed by Jeng, D. S.; Lin, Y. S.

Publisher: John Wiley and Sons
Year: 1997
Tongue: English
Weight: 401 KB
Volume: 21
Category: Article
ISSN: 0363-9061
DOI: 10.1002/(sici)1096-9853(199701)21:1<15::aid-nag856>3.0.co;2-4

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✦ Synopsis

Conventional investigations of waves-seabed interaction problems have been only concerned with the soil response due to two-dimensional linear progressive waves over a uniform seabed. However, the effects of non-linear waves which have been reported in the literature may be significantly different. In this paper, a finite element model is developed to investigate the non-linear wave-induced seabed response with variable permeability and shear modulus in a three-dimensional domain. The finite element formulations are fully presented in this paper. The numerical model is verified with the previous investigations through the reduced form of the present solution. The numerical results indicate that the influence of non-linear wave components cannot always be ignored without substantial error. Furthermore, the wave-induced seabed response is affected significantly by variable permeability in coarser seabeds and variable shear modulus in finer seabeds.

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