Second Generation Intact Stability Criteria: on the validation of codes for direct stability assessment in the framework of an example application

作者：Bulian Gabriele^*; Francescutto Alberto

来源：Polish Maritime Research, 2013, 20(4): 52-61.

DOI：10.2478/pomr-2013-0041

• IMO
• large amplitude ship motions
• second generation intact stability criteria
• nonlinear roll
• sub-harmonic resonance
• validation

The Sub-Committee on Stability and Load Lines and on Fishing Vessels Safety (SLF) of the International Maritime Organization (IMO) has undertaken the development of so-called %26quot;Second Generation Intact Stability Criteria%26quot; (SGISC) with the intention of providing a new set of rules covering those phenomena which are not properly covered by present, mostly semi-empirical, requirements. The first two levels of the envisioned 3 + 1 tiers structure of SGISC are so-called %26quot;vulnerability assessment%26quot; levels: most of the discussion has so far been dedicated to these levels. At the highest level there is the so-called %26quot;Direct Stability Assessment%26quot;, which is also strictly linked with the development of ship-specific %26quot;Operational Guidance%26quot;. Recent discussion on the topic of %26quot;Direct Stability Assessment%26quot; (DSA) has touched the issue of %26quot;validation%26quot; of numerical codes to be employed at this level. Stimulated by, and in view of, the ongoing IMO discussion, this paper presents the results of a recent series of experiments in beam waves (mono-/bi-chromatic, irregular) and associated simulations based on a 6-DOF blended code. Nonlinear harmonic and sub-harmonic resonances are observed and simulated.

• 出版日期2013