游艇关键造型特征的眼动追踪研究

目的 为建立眼动数据和感性意象评价之间的数学关系,提出一种基于眼动参数的造型评价方法。方法 以游艇为研究对象,通过SMIRED500型眼动仪设备的应用,结合语义差分法进行主观评价,通过眼动追踪记录受试者在观看不同造型风格游艇时的眼动数据,对采集的眼动数据进行单因素方差分析,保留瞳孔直径大小、总注视时间、眼跳到该区域次数及首视点持续时间四项有效眼动数据,并结合主观问卷探讨不同游艇的视觉认知规律,采用多元线性回归方程进行数据建模,明确各项眼动数据对感性评价的影响权重,研究了被视者的眼动追踪数据与主观评价之间的关联关系。结论 建立眼动数据与感性评价之间的数学关系模型,并验证了模型的有效性,对产品造型方案评选及产品设计方案改进提供了有力的支持。     

游艇波浪侵蚀长港河河岸的计算分析

船行波导致的河岸侵蚀对土地资源和堤防构成威胁。游艇体量小,其危害往往被忽视,然而快速航行的游艇会对河岸产生严重损坏。目前量化评估船行波侵蚀河岸的文献很少。建立船行波引起河岸侵蚀后退的估算模型,并结合鄂州市长港河侵蚀进行实例计算。研究过程由三部分组成:一是现场勘测和调研,包括采集河岸土样,测量河道特征参数,调查长港河船舶类型、船舶技术参数及各类船舶每天航行频次;二是开展室内土工试验,测定土样颗粒级配曲线和临界剪应力,以评估河岸的抗侵蚀性;三是开展河岸侵蚀的数值计算,包括计算游艇船行波要素,采用侧向侵蚀模型计算河岸侵蚀率。计算结果表明,在游艇船行波侵蚀作用下,长港河河岸年平均侵蚀后退54.4 cm,与现场调研结果基本相符。     

游艇俱乐部的规划设计

游艇俱乐部是近些年在我国逐步兴起的高档体育娱乐项目。本文系统地分析了游艇俱乐部的缘起、种类及其基本设施, 并介绍了深圳岁宝游艇俱乐部的规划设计实例     

游艇设计要素的形态语义分析

目的对游艇设计要素进行形态语义分析。方法提取典型游艇样本各部分的主要特征,根据线型进行分类整理。挖掘造型特征线的形态语义,与游艇的整体感性意象建立联系。结论从设计造型到感性意象的映射可量化、可调整,在游艇造型设计的方法中发现逆向感性工学的适用性,为游艇的造型设计提供参考。     

Preliminary study on a kinetic energy recovery system for sailing yachts

This paper presents the preliminary theoretical results obtained on a model of a kinetic energy recovery system for sailing yachts, based on the conversion of wave-induced boat oscillations (heave, pitch and roll) into electric energy by means of a linear generator.The recovery system is based on a linear generator, with a mass oscillating along the vertical axis and gaining kinetic energy: the resulting mechanical energy can be extracted (by means of electromagnetic damping) and converted into electricity. The oscillating mass incorporates permanent magnets which, moving in proximity of stator windings, generate electric power due to electromagnetic induction.The device aims at recovering as much kinetic energy as possible from the natural movements of a sailing yacht on the sea, therefore taking the view of a boat as a moving wave energy converter with energy harvesting capability. The boat's motions can be vertical oscillations due to the buoyancy in the presence of sea waves, both when the boat is still or sailing, and rolling and pitching motions originated both by sailing in wavy waters and by the normal boat dynamics due to the sails' propulsion. Linear generators will convert kinetic energy into electrical energy to be used as “green” electricity for any possible application on board.Preliminary calculations show that a properly configured system could be able to recover approximately 100 W under most sea conditions on an almost continuous basis, which can be an extremely attractive result since an electric energy availability of 1–2 kWh on a sailing yacht is of significant interest.     

铝合金游艇液压系统的设计

叙述了一种用于水上观光游览、航行于太湖水域的新款式铝合金游艇的设计,重点介绍了该铝艇螺旋桨液压控制系统、绞盘机液压控制系统两大部分的设计原理和特点,以及完工后的该艇实际使用情况和社会价值。     

某艇用DME主机燃烧室改进的性能计算与分析

为了改进某艇用DME主机的燃烧室结构,运用湍流控制涡团破碎燃烧模型对其燃烧室改进前后的性能和缸内主要污染物的分布情况进行了数值摸拟计算,并对比分析了其动力性与排放特性。结果表明:主机燃烧室改进后,有利于DME的雾化,促进了燃烧的进行,NOx与CO2的排放分别下降约20%和3.5%;适当调整喷油提前角,可以提高主机动力性能,且NOx与CO2的生成量较改进前基本无增幅;另外,燃烧开始后,NOx与CO2均首先在燃烧室中上部产生,然后逐渐向两侧扩散,且两者中心区域的质量分数均较低,为艇用DME主机燃烧室的改进提供了依据。     

游艇设计中感性意象空间的构建

目的构建游艇设计中的感性意象空间,为游艇的造型设计提供了较为科学的参考依据。方法采用调查问卷的方式筛选出代表游艇感性特征的词汇,广泛收集世界知名船舶游艇公司的官方网站、大型游艇交易网站,游艇杂志及游艇论坛上高端游艇的外观图片,并筛选出具有代表性的游艇样本图片;运用语义差异法对游艇样本图片的感性意象进行定量评价;运用SPSS因子分析法提取了感性意象的公因子;运用SPSS统计分析软件对游艇感性意象词汇之间存在的相关性进行了探究;运用聚类分析法对游艇感性意象进行分类。结果提取了不同类型的游艇感性意象,构建了游艇的感性意象空间。结论通过对游艇感性意象空间的构建,对于游艇设计中把握不同类型的游艇感性意象具有指导意义。     

《游艇造型与舱室设计》课程教学改革与实践

国内游艇产业发展迅速,但游艇专业人才非常缺乏。《游艇造型与舱室设计》课程是我校立足市场需求,在船舶与海洋工程专业开设的一门特色课程,对该课程教学内容、教学方式等方面进行切实可行的教学改革与实践,用新的教学理念,增强学生获取新知识的渴望,加强他们的工程意识、创新意识和竞争意识,实现高素质、复合型人才培养的目的。     

Failure of backstay rod connectors on a luxury yacht

A backstay rod connector on a luxury yacht fractured while the vessel was docked. The fracture of this connector caused the backstay assembly to fall to the deck. A second connector contained a large crack. Both connectors were made from 17-4 PH stainless steel. One half of the fractured connector was recovered. The fracture initiated by pitting and crevice corrosion and was followed by stress-corrosion cracking (SCC) that ultimately led to the fracture. The second connector most probably cracked in the same way. Adverse conditions inherent to service use of the connectors could have facilitated the stress-corrosion process. Nevertheless, use of a stress-corrosion-susceptible material is unacceptable, and any connectors made from 17-4 PH steel aged below 866 K (1100°F) should be replaced. Candidate replacement materials are stainless steels type 316, Nitronic 50, a duplex steel such as SAF 2205, and 17-4 PH in the H1100 and H1150 conditions.