HC-DSSE 파단 모델을 이용한 셸 요소 수치해석 기반 연성 파단 예측

Abstract

The wave impact load on offshore structures can be divided into the green water impact load and the wave slamming impact load. It is known that these wave impact loads have a strong nonlinear characteristics. The classification rule is notsufficiently specified enough to assess the wave impact load having a large different pressure levels. The present study considers the wave impact load on a circular cylinder by breaking waves. A model test was carried out to measure the wave impact loads due to breaking waves in the 2D wave tank. In order to generate the breaking wave, a focusing wave method was applied. In this study, the structural response of cylindrical structure based on a measured data of two dimensional tank test was carried out many cases a wave horizontal impact test. The structural damage estimation procedures for a offshore tubular member due to the wave impact load the proper impact load are proposed for considering a minimum required thickness of each members. It was found that a required minimum thickness can be changed by impact pressure which is located in the three dimensional space on the surface of a tubular member.