基于CATIA V6的船体结构二维出图关键技术

随着三维设计理念在船舶行业中的不断推广,船体结构三维建模方法逐渐普及。三维模型虽较二维图纸有着诸多优势,但目前限于船级社、船东及部分中小船厂的实际情况,"三维设计+二维送审"的工作模式仍是现阶段的主流形式。因此通过三维模型直接实现二维出图,仍具有十分重要的意义。文章主要介绍了一种基于CATIA V6的结构二维出图关键技术,以平台原生出图功能为基础,结合CAA二次开发,提出中间模型技术,解决当前结构三维模型二维出图所面临的问题,整体出图效果较CATIA原生出图功能有显著的提升。     

基于CATIA V6的船体结构模型检查二次开发研究

随着数字化技术的发展,三维设计正成为船舶行业的技术发展方向。基于CATIA V6平台的船体结构三维设计,目前主要应用SFD轻量化模型生成二维图纸对接产品方案设计,应用SDD实体模型对接生产设计。因此在三维建模过程中,为保证二维出图与实体转模的准确性,对船体结构SFD模型进行检查尤为重要。虽然三维模型具有视觉上的直观性,但是在CATIA平台模型检查过程中,由于结构模型构件数量庞大且构件属性信息显示不够直接,应用平台原生功能的模型检查方法效率较低,检查结果不够理想。针对平台原生功能存在的问题,本文探索了二次开发在模型结构检查中的运用。选取船体结构SFD模型中面板加厚方向判定这一典型检查场景为例,通过CAA和EKL混合开发实现了面板加厚方向的批量检查和模型修改,极大提高了模型检查的效率和准确性,实用性高。同时本文也为二次开发应用于船体结构模型检查提供了开发思路和主要技术路线。     

基于CATIA V6的船舶管路三维设计研究

为有效推进CATIA V6软件的船舶工程化应用,通过基础资源库配置、管路设计、二维出图和应用开发4个方面进行管路三维设计研究。从工程技术表入手,系统介绍了CATIA V6面向二维驱动三维管路设计的资源配置和建库策略。结合船舶研制背景,详细分析了CATIA V6管路设计流程,并总结出工程设计应用经验。同时,为弥补通用软件在工程设计中的不足,开展了面向二维出图和快速建库的定制开发,且在工程实践中具有较好的操作性和稳定性。     

基于 CATIA V6的船舶管路三维设计研究

为有效推进CATIA V6软件的船舶工程化应用,通过基础资源库配置、管路设计、二维出图和应用开发4个方面进行管路三维设计研究。从工程技术表入手,系统介绍了CATIA V6面向二维驱动三维管路设计的资源配置和建库策略。结合船舶研制背景,详细分析了 CATIA V6管路设计流程,并总结出工程设计应用经验。同时,为弥补通用软件在工程设计中的不足,开展了面向二维出图和快速建库的定制开发,且在工程实践中具有较好的操作性和稳定性。     

HIDAS三维智能化出图设计技术

研究了一种全新的二三维一体化的出图设计技术——HIDAS三维智能化出图设计技术。介绍了该出图技术的系统架构,阐述了系统管理功能,包括二三维数据集成管理、三维操作模式管理、子图对象管理、图纸数据更新管理、图元标注管理等。HIDAS出图系统采用三维模型与二维图元相结合的出图方式,二维子图通过操作三维模型得到,二三维对象实现数据关联,建立起内在的对应关系。还阐述了图纸的自动更新机制,当设计方案变更导致模型发生变化时,更新数据从模型传递到图纸,图纸中的二维子图、图元属性、图元标注、统计图表等信息自动实现更新操作。     

基于CATIA V6的绑扎桥三维设计方法

在集装箱船逐步大型化的大趋势下,对绑扎桥的设计要求逐渐凸显。本文基于CATIA V6软件平台,提出了一套绑扎桥三维设计方法。综合考虑了绑扎桥的实际设计需求以及三维模型化的技术难点,通过利用参数化定义,EKL二次开发手段,以及CATIA V6中片体模型转实体模型,片体模型转FEM模型等强大的原生功能有效地解决了快速建模、CAD/CAE一体化、BOM数据与出图信息集成等一系列难题,充分利用了三维技术减少设计流程中的信息孤岛现象,基于高度集成的参数化模型来提高设计响应速度与准确性。最后通过实践案例予以验证并分析了该方法的工程实用价值。     

CATIA V6在船舶管路支吊架上的运用

管道支吊架设计是轮机专业的重要组成部分,本文系统介绍了CATIA V6中标准支吊架和上下文支吊架的设计方法,从资源库配置、创建流程及注意事项、支吊架库的构建三个方面进行说明,为支吊架设计提供参考与借鉴。同时对三维协同设计、干涉检查和二维出图三方面做了分析以满足实际工程应用需要。     

船舶机舱结构三维设计

以某货船机舱分段结构设计为例，把SolidWorks、AutoCAD和EXCEL相结合进行机舱分段结构三维建模、二维出图、自动化计算，从而探讨计算机三维设计技术在船舶结构设计方面的应用。     

面向CFD的螺旋桨逆向三维曲面建模方法

针对螺旋桨三维外形的曲面特征,结合螺旋桨二维图绘制方法和CATIA中曲面逆向设计方法,根据螺旋桨二维投影轮廓图,逆向投影进行螺旋桨三维建模,生成面向CFD的三维模型,进行水动力数值分析,实现螺旋桨的优化设计。     

基于CADDS5-PIPING的舰船管系三维模型到二维出图技术的开发应用

文章概述了进行舰船管系三维模型到二维出图技术开发的目的、意义。针对CADDS5-P IP ING的特点和二维出图的需求,提出了解决问题的方法,达到了研发的目的。     

33rd International Conference on Ocean,Offshore and Arctic Engineering （OMAE2014）

正San Francisco,California,June 8-13,2014.OMAE 2014 is the ideal forum for researchers,engineers,managers,technicians and students from the scientific and industrial communities from around the world to:·meet and present advances in technology and its scientific support;·to exchange ideas and experiences whilst promoting technological progress and its application in industry·to promote international cooperation in ocean,offshore and arctic engineering.In line with the tradition of excellence of previous OMAE conferences,more than 900 technical papers are planned for presentation.Outreach for Engineers Specialty Forum This Specialty Forum is designed for students and professionals who may not be familiar with the Ocean and Offshore industry,as well as those who have just recently specialized in this field.     

Errata

正In the paper"Influence of Fouling Assemblage on the Corrosion Behaviour of Mild Steel in the Coastal Waters of The Gulf of Mannar,India"in Vol.12,No.4,Page:509,References were lost,and the two authors’biographies were identical.The correct text is shown below.We apologize to the authors and our readers for any inconvenience caused by the errors.     

Journal of Marine Science and Application 2014 Sum. Contents

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第34届海洋、离岸及极地工程国际会议(英文)

正St.John's,Newfoundland,Canada,May 31-June 5,2015 OMAE2015 is the ideal forum for researchers,engineers,managers,technicians and students from the scientific and industrial communities from around the world to: meet and present advances in technology and its scientific support;     

联合作战计划和执行系统

全球指挥控制系统(GCCS)实施当前美国海军网络中心战信息基础设施的联合计划网络。联合作战计划和执行系统(JOPES)支持GCCS实现联合计划。JOPES有两类计划：时间不限的精密预案计划生成作战计划、方案计划或职能计划；时间敏感的危机行动计划生成作战命令或战役方案。前者在和平时期创建的作战计划是后者的计划基础，加速应付危机的能力。     

Recent progress on wave induced loading measurements in warships

Recent measurements of wave induced hull strain and flexure in RN warships are presented together with the derivation of the current design criteria for extreme hull girder bending loads. The history of the development of the shipboard instrumentation used is given and recent developments to improve the quality and ease of analysis of the data are described. An unexpectedly high transverse asymmetry in the longitudinal strains measured in destroyers is shown to be the result of a combination of vertical and lateral bending in oblique seas. Finally recent theoretical comparisons between the loading of Deep-Vee hulls and conventional UK rounded bilge hulls are presented which demonstrate the higher loading experienced by this type of hull form.     

The 11th International Conference on Hydrodynamics (ICHD 2014)

正19–24 October 2014 SingaporeCONFERENCE THEMES The overall aim of the ICHD Conference is to provide a forum for participants from around the world to review,discuss and present the latest developments in the broad discipline of hydrodynamics and fluid mechanics.The first International Conference on Hydrodynamics(ICHD)was initiated in 1994 in Wuxi,China.Since then,9 more ICHD conferences were held subsequently in Hong Kong,Seoul,Yokohama,Tainan,Perth,Ischia,Nantes,Shanghai and St Petersburg.Evidently the ICHD conference has become an important event among academics,researchers,engineers and operators,working in the fields closely related to the science and technology of hydrodynamics.The 11th ICHD will be held in Singapore in 2014.     

第十二届深水操作会议和展览会(英文)

正November 4-6,2014Moody Gardens HotelConvention Center/Galveston,TX The Deepwater Operations Conference and Exhibition is celebrating its 12th anniversary this year.This growing event will continue the tradition of excellence in addressing operational challenges involved in developing deepwater resources.We will return to the Moody Gardens Hotel and Convention Center on November 5-7,2014 in Galveston,Texas.     

Eastbound or westbound ?

In terms of equal sailing distances, where is the inflexion when ships depart from ports in the Asian Continent to New York via Suez and/or Panama？
The answer is China South Port Group （Hong Kong, Shenzhen and Guangzhou）.     

Impact of regulation on the performances of long-distance transport services: A comparison of the different approaches in Sweden and Norway

Despite the many socio-economic similarities between Sweden and Norway, differences in jurisdiction, organisation, cooperation, and financing of long-distance passenger train and coach services have led to the development of four distinctively different ways of serving the markets. This paper describes how the train and coach markets have developed in the two countries, with emphasis on regulatory and industrial structure and a couple of performance variables.Looking at passenger rail, both countries separated infrastructure from operation over a decade ago. However, while Norwegian rail is characterised by an almost monopoly supplier, rail services in Sweden are partly decentralised to the responsibility of county authorities and are widely subjected to competitive tendering. The rest of the network is about to be opened up for on-the-track competition. Swedish Rail (SJ) has spent the last decades consolidating its core business (passenger rail) and sold out its other businesses. In contrast, the Norwegian state rail (NSB) has expanded its business to become a major bus operator and property owner, with extensions also into the Swedish market.The coach industry was more recently deregulated in both countries. The Swedish coach market is dominated by privately owned companies operating services to and from Stockholm. In Norway, state-owned NSB is a major coach operator on medium distance routes, and is also the largest partner of Nor-Way Bussekspress which totally dominates long-distance coach services. Further, the Norwegian coach market is characterised by cross-ownership and cooperation which has enabled an extensive route network which covers most of Norway.We find distinct differences in achievements in the two modes and in the two countries. Swedish rail services have succeeded in winning market shares and in renewing and developing both infrastructure and service levels to a greater extent than the Norwegian model. On the other hand, the Norwegian coach market seems to be more developed and efficient compared to its Swedish counterpart.The paper concludes with a discussion on the possible links between the different approaches and the performance observed, with the aim to stimulate further and more detailed research on some important issues.