Development of a Dynamic Response Analysis Method of Tension Leg Platforms in Waves

J. Ocean Eng. Technol. 1993;7(1):133-146.

인장 계류식 해양구조물의 동적응답 해석법의 개발

구자삼,이창호,홍봉기

부산수산대학교 공과대학선박공학과,부산수산대학교 공과대학선박공학과,부산수산대학교 공과대학선박공학과

Keywords: Dynamic Response, Tension Leg Platform, Hydrodynamic Interaction, Three Dimensional Source Distribution Method, Structural Response, Motion Response

핵심용어: 동적응답, 인장 계류식 해양 구조물, 유체 상호간섭, 3차원 특이점 분포법, 구조응답, 운동응답

Abstract

A numerical procedure is described for predicting the motion and structural responses of tension leg platforms (TLPs) in waves. The developed numerical approach is based on combination of a three dimensional source distribution method and the dynamic response analysis method, in which the superstructure of TLPs is assumed flexible instead of the rigid body assumption used in usual two-step analysis method, proposed by Yoshida et. al. .The hydrodynamic interactions among TLP members, such as columms and pontoons, are included in the motion and structural analyses. Numerical results are compared with the experimental and numerical ones, which are obtained in the literature, of the motion and structural responses of a TLP in waves. The results of comparison confirmed the validity of the proposed approach.