Finite element simulation of long wave impact on floating breakwaters with variable stiffness

1st Conference of Computational Methods in Offshore Technology

计算机科学

Papathanasiou, T.K.^1 ; Karperaki, A.^2 ; Belibassakis, K.A.^1

Department of Mechanical, Aerospace and Civil Engineering, Brunel University London, Uxbridge

UB8 3PH, United Kingdom^1

School of Naval Architecture and Marine Engineering, National Technical University of Athens, Zografos

15773, Greece^2

关键词: Engineering applications;    Finite element simulations;    Hydroelastic finite element;    Hydroelastic response;    Maximum amplitude;    Modulation wavelength;    Stiffness profiles;    Variable stiffness;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/276/1/012022/pdf
DOI  :  10.1088/1757-899X/276/1/012022

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

The hydroelastic response of flexible, floating breakwaters is a subject of interest for coastal engineering applications. In this study, a higher order hydroelastic finite element is applied to the simulation of floating breakwaters of variable stiffness undergoing long wave impact. The main aim is the evaluation of breakwater efficiency in terms of transmitted and reflected wave characteristics. It is established that, for the wave-lengths examined, the maximum amplitude and wave-length of the transmitted pulse are strongly dependent on the breakwater stiffness. Finally it is shown that for case of a periodic stiffness profile the transmitted energy is minimised when the modulation wavelength is comparable to the wavelength of the incoming excitation.