通过三体船自航模型试验，对三体船迎浪不规则波下的运动和载荷状态进行对比和分析。通过统计不规则波下运动特征值，分析船体纵摇、升沉以及主船体加速度随浪级和航速的变化规律。在船体模型上合理的布置传感器，对不规则波下船体剖面载荷纵向分布进行研究，并分析浪级和航速变化对于载荷的影响。通过统计船艏上浪的次数和船体表面压力的极值，研究压力极值随船长、型深以及片体内外侧的分布规律，给出不规则波下浪级和航速对波浪砰击载荷的影响。通过一系列的模型试验，为三体船的设计以及后续的结构强度评估提供支持。
Abstract
Motion and load of trimaran in irregular head waves are compared and analyzed by a series of self-propulsion experiment of trimaran model. The rule of trimaran motion with different wave scale and sailing speed, such as pitch, heave and acceleration of center hull, is analyzed by comparing the characteristic value in statistics. The longitudinal distribution of load under irregular waves is studied with the reasonable arrangement of sensors on the trimaran model. And the influence on load with the change of wave scale and sailing speed is also analyzed. The extreme value of the pressure on trimaran’s shell is collected to study the longitudinal and vertical distribution of pressure on the center hull and the difference of pressure on the two sides of outrigger. The number of green water is also counted to analyze the influence of the wave’s impact on trimaran with different wave scale and sailing speed. The data, which is got by the series of experiment, provides the foundation for the trimaran’s design and structural strength evaluation.
关键词
三体船 /
模型试验 /
船体运动 /
载荷 /
压力
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Key words
trimaran /
model test /
ship motion /
load /
pressure;
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参考文献
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