초대형 부유식 해상구조물의 유탄성 응답 저감을 위한 진동수주형 방파제 적용

Abstract

A numerical analysis is made to investigate the hydroelastic response of pontoon-type VLFS with OWC-type breakwater. A OWC(Oscillating Water Column)-type breakwater which is installed in the middle of the VLFS is considered to reduce the hydroelastic response. To analyze the coupled hydroelastic response of VLFS with OWC-type breakwater the mathematical formulation is made in the scope of the classical potential theory. Localized finite element method based on the classical variational principle is adopted as numerical scheme for fluid domain. To analyze the elastic motion of VLFS the mode-superposition method is adopted. The coupled hydroelastic response of VLFS is investigated for the combinations of main parameters of OWC-type breakwater such as location and shape of OWC chamber, bending rigidity variation of VLFS and OWC chamber.