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世界油运市场对超大型油船(VLCC)的需求非常迫切。油船共同结构规范(CSR)对VLCC结构设计的影响是全面和系统的。加之MARPOL 12A条款要求对燃油舱设置双壳保护,给机舱的结构设计增加了难度。该文以308000吨VLCC为例,对基于CSR的VLCC的机舱设计进行了研究,对燃油舱的双壳保护、内壳折角和甲板上浪等技术问题进行了分析,初步阐明了CSR对VLCC机舱设计的影响。 相似文献
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708研究所以"经济、安全、环保"(ESE)为宗旨,开发了适应双壳油船共同结构规范(CSR)的30.8万t VLCC船型.本中介绍了CSR对结构设计的关键要求以及对总体设计的部分要求,并着重对VLCC总强度储备、中剖面设计和粗网格有限元分析等关键技术进行了分析,以期初步阐明CSR对VLCC结构设计的影响. 相似文献
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国际、国内的油运市场对超大型油船(VLCC)的需求非常迫切.油船结构共同规范(CSR)对VLCC结构设计的影响是全面和系统的.文章以30.8万吨VLCC为例,对使用CSR进行了较为深入的研究,包括总纵强度、中剖面设计等关键技术问题,在此基础上初步阐明CSR对VLCC结构设计的影响. 相似文献
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CSR对超大型油船装载及压载舱分舱的影响 总被引:3,自引:0,他引:3
国际、国内的油运市场对超大型油船(VLCC)的需求非常迫切。油船结构共同规范(CSR)不仅对VLCC结构设计的影响是全面和系统的,还对VLCC的装载工况和压载舱分舱方案有很大的影响,而这些因素直接决定了船体的最大中拱静水弯矩。该文针对30.8万吨VLCC,对CSR进行了研究,通过装载计算,初步阐明了CSR对VLCC装载工况和压载舱分舱设计的影响。 相似文献
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散货船共同结构规范应用探讨 总被引:1,自引:0,他引:1
对散货船共同结构规范(CSR)在船舶结构设计应用中的若干问题进行了分析,并结合散货船实船的设计,对应用CSR设计与以往常规设计的结果进行了对比,阐明了在CSR应用中应注意的问题。 相似文献
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世界巨型油船(VLCC)发展综述 总被引:1,自引:0,他引:1
本报告综合分析了世界巨型油船(VLCC)发生、发展过程,目前的市场情况及趋势,世界VLCC的建造能力以及VLCC三代产品的技术特点,并对我国研制VLCC的工作提出了初步建议。 相似文献
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基于超大型油船(VLCC),针对液货相关系统展开分析,完成以液货智能管理系统框架设计、液货和货舱监测报警系统集成设计、液货保护系统监测报警系统集成设计、辅助决策设计为四大关键技术的液货智能管理系统的设计研究。在智能船舶1.0的研究背景下,依托招商局能源公司VLCC实船安装的液货智能管理系统,通过对关键数据进行采集和监测分析,实现液货系统的预报警和报警功能,同时为船员提供对应辅助决策。该系统突破了常规油船液货控制及监测系统独立显示和报警的模式,实现了对液货系统状态的集成监测报警、智能管理及辅助决策功能,很大程度地提高了液货系统操作的安全性和便利性。 相似文献
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The hull girder moment capacity of a very large crude oil carrier (VLCC) called Energy Concentration (EC), for which many benchmark studies have been carried out using the simple progressive collapse method (SPCM), is predicted. In this study, three approaches are used to represent the load-shortening behavior, so-called average compressive strength, of a stiffened panel, comprising the hull section: 1) kinematic displacement theory (KDT); 2) nonlinear finite element analysis (FEA); and 3) simple formulas in the common structural rule (CSR) for tankers. Load-shortening curves for various kinds of stiffened panels in EC are compared for five different scenarios with variations of load-shortening approaches and initial imperfections. In order to verify the effect of load-shortening on the prediction accuracy of the hull girder moment-carrying capacity, load-shortening curves are imported into an SPCM-based in-house program called Ultimate Moment Analysis of Damaged Ships (UMADS). Comparison of the hull girder ultimate strength for general heeling conditions, including hogging and sagging conditions, reveals that the load-shortening curves significantly affect the hull girder moment-carrying capacities. Based on our comparison of these capacities with other benchmark results, it is concluded that nonlinear FEA provided the most conservative results, KDT provided the second most conservative results, and the CSR formulas predicted the upper bound. 相似文献
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支持向量机和遗传算法组合策略的VLCC船中结构优化设计(英文) 总被引:1,自引:0,他引:1
In this paper a hybrid process of modeling and optimization,which integrates a support vector machine(SVM) and genetic algorithm(GA),was introduced to reduce the high time cost in structural optimization of ships.SVM,which is rooted in statistical learning theory and an approximate implementation of the method of structural risk minimization,can provide a good generalization performance in metamodeling the input-output relationship of real problems and consequently cuts down on high time cost in the analysis of real problems,such as FEM analysis.The GA,as a powerful optimization technique,possesses remarkable advantages for the problems that can hardly be optimized with common gradient-based optimization methods,which makes it suitable for optimizing models built by SVM.Based on the SVM-GA strategy,optimization of structural scantlings in the midship of a very large crude carrier(VLCC) ship was carried out according to the direct strength assessment method in common structural rules(CSR),which eventually demonstrates the high efficiency of SVM-GA in optimizing the ship structural scantlings under heavy computational complexity.The time cost of this optimization with SVM-GA has been sharply reduced,many more loops have been processed within a small amount of time and the design has been improved remarkably. 相似文献