A NEW METHOD FOR ASSESSING THE SAFETY OF SHIPS DAMAGED BY GROUNDING

作者：Paik J K^*; Kim D K; Park D H; Kim H B; Kim M S

来源：Transactions of the Royal Institution of Naval Architects Part A: International Journal of Maritime Engineering , 2012, 154(A1): A1-A20.

DOI：10.3940/rina.ijme.2012.a1.218

The primary aim of the present study is to propose an innovative method for assessing the safety of ships which have suffered accidental or in-service damages. Only a small number of probable scenarios for accidental or in-service damage representing all possible damage scenarios are selected using a sampling technique in which the random variables affecting the damage are probabilistically characterized. A damage index for the corresponding damage scenario is defined as a function of damage characteristics such as location and extent of the damage. The residual strength performance of a ship with the corresponding damage scenario can then be calculated by analytical or numerical methods. Once this process has been carried out for each of the damage scenarios selected, a diagram relating the residual strength performance to the damage index (abbreviated as the R-D diagram) can be established. This diagram will be very useful for a first-cut assessment of a ship%26apos;s safety immediately after it has suffered structural damage. The diagram can also be used to determine acceptance criteria for a ship%26apos;s safety against accidental or in-service damage. An applied example is shown to demonstrate the applicability of the proposed method in terms of developing a diagram between the ultimate longitudinal strength versus grounding damage index for four types of double-hull oil tankers VLCC, Suezmax, Aframax, and Panamax.

• 出版日期2012-3