VERTICAL MOTIONS OF HIGH-SPEED BOATS IN HEAD SEA AND WAVE LOADS
VERTICAL MOTIONS OF HIGH-SPEED BOATS IN HEAD SEA AND WAVE LOADS
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高速船在逆海中的垂直运动和波浪载荷
DOI：
10.2534/jjasnaoe1968.1983.154_151
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发表时间：
1983
期刊：
影响因子：
--
通讯作者：
F. Chiu
中科院分区：
文献类型：
--
作者：
M. Fujino;F. Chiu
本文研究了高速船在头浪中的垂向运动和波浪载荷，考虑了非线性水动力和波浪动升力的影响。进行了一系列的试验，测量升沉和纵摇，船首加速度，垂直弯矩和剪切力在中剖面的分段模型。通过以下三种不同的方式将实验结果与预测的理论值进行比较：（A）线性计算，即适用于在平静水中行驶时的行驶条件的普通条带法，（B）非线性计算，其中考虑了随时间变化的截面水动力的影响，以及（C）考虑高速滑行的影响以及随时间变化的截面水动力的影响的非线性计算。比较结果表明，本文提出的方法可以计算高速船的垂向运动和波浪载荷，其精度足以满足实际应用的需要，而且如果能适当地计算高速船在该速度下的剖面水动力，本文方法也可以应用于比本文所考虑的速度更高的速度下的情况。
In this paper, the authors investigate into vertical motions of a high-speed boat travelling in head sea and wave loads acting on it, taking account of the effects of non-linear hydrodynamic forces and dynamic lift in waves. A series of tests was carried out to measure heave and pitch, bow acceleration, vertical bending moment and shearing force at the midship section of a segmented model. The experimental results were compared with theoretical values predicted in the following three different ways : (A) linear calculation, that is to say, the Ordinary Strip Method applied to the running condition at travelling in a calm water, (B) non-linear calculation in which the effects of time-varying sectional hydrodynamic forces were taken into account, and (C) non-linear calculation taking account of the effects of planing at a high-speed as well as the effects of time-varying sectional hydrodynamic forces. As the result of comparison, it was shown that vertical motions and wave loads of high-speed boats can be evaluated by the method presented in this paper with accuracy enough for practical use, and that the method may be applied to the case of travelling at a higher speed than that considered in this paper if the sectional hydrodynamic forces will be appropriately evaluated when travelling at that speed.