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首页> 外文期刊>The Transactions of the Royal Institution of Naval Architects >THE INFLUENCE OF CENTRE BOW LENGTH ON SLAMMING LOADS AND MOTIONS OF LARGE WAVE-PIERCING CATAMARANS
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THE INFLUENCE OF CENTRE BOW LENGTH ON SLAMMING LOADS AND MOTIONS OF LARGE WAVE-PIERCING CATAMARANS

机译：中心弓长度对大波浪穿刺双体S游击载荷和运动的影响

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摘要

The effect of various centre bow lengths on the motions and wave-induced slamming loads on wave-piercing catamarans is investigated. A 2.5 m hydroelastic segmented model was tested with three different centre bow lengths and towed in regular waves in a towing tank. Measurements were made of the model motions, slam loads and vertical bending moments in the model demi-hulls. The model experiments were carried out for a test condition equivalent to a wave height of 2.68 m and a speed of 20 knots at full scale. Bow accelerations and vertical bending moments due to slamming showed significant changes with the change in centre bow, the longest centre bow having the highest wave-induced loads and accelerations. The increased volume of displaced water which is constrained beneath the bow archways is identified as the reason for this increase in the slamming load. In contrast it was found that the length of centre bow has a relatively small effect on the heave and pitch motions in slamming conditions.
机译：研究了各种中心弓长度对冲浪双体船的运动和波浪引起的砰击载荷的影响。用三个不同的中心弓长度测试了一个2.5 m的水弹力分段模型，并在拖曳油箱中以规则波进行拖曳。测量了模型船体中的模型运动，猛击载荷和垂直弯矩。在等于2.68 m的波高和20节的全速航速的测试条件下进行了模型实验。弓箭加速度和垂直弯曲力矩均会随着中心弓箭的变化而发生显着变化，其中最长的弓箭弓会产生最大的波浪载荷和加速度。被限制在船头拱门下方的排水量增加被认为是造成砰击负荷增加的原因。相反，发现在撞击条件下，中心弓的长度对升沉和俯仰运动的影响相对较小。

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