三体船横摇惯性半径的估算方法研究

Assessment Method for the Rolling Inertia Radius of Trimaran

三体船的研究与应用极大地推进了高速船舶的发展。对三体船耐波性研究的重要工作内容之一是确定其横摇惯性半径,以计算船舶的横摇周期等。由于三体船的特殊结构,横摇惯性半径的确定方法与单体船型有所不同。在三体梁简化模型的基础上,通过对计算结果的拟合与修正,找到了三体船横摇惯性半径计算的相关参数,得出三体船惯性半径的估算公式,并通过算例证明了该估算方法的可行性。

The research and application of trimaran push on the development of high speed ship.Seakeeping property plays an important role in the performance of the trimaran sailing at sea,while the roll radius of inertia is a basic property that will have impacts on the rolling natural period and ship stability.Because of the trimaran＇s special structure,assessment of radius of inertia is a little bit different from single hull ship.Through a three-body beam model and its numeration results,this paper found the key parameters,proposed an estimated formula for the radius of inertia of trimaran,and validated the feasibility of the assessment method.