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以海上单体高速客船为研究对象,分析海上单体高速客船结构规范设计系统开发的目的、系统的构成和功能,介绍主要模块程序开发思想和方法。使用所开发的程序系统实现计算机辅助海上单体高速客船结构设计,可提高结构规范设计的效率。 相似文献
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The time dependency of the survivability of passenger ships in flooding accidents leading to ship’s loss is shown to be confined within short times after the flooding initiation. RoRo ferry and cruise type ships demonstrate similar behaviour, though vessel types differ with respect to the subdivision and the flooding process. The presented research is based on numerical simulations of the flooding of two sample passenger ships in collision damages and the estimation of the probability to capsize. The systematic fast character of capsize events is shown to be primarily a consequence of the extent of hull breaches. The IMO regulatory concept for orderly abandonment of damaged passenger ships, in addition to the safe return to port regulatory provisions, are discussed in view of the present results. The timely onboard damage identification by ship’s master and the enhancement of the SOLAS survivability requirements for passenger ships appear to be the most effective operational and design measures leading to improved survivability of the ship and to enhanced safety of people onboard. 相似文献
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Analysis of the dynamic response of ships in accident scenarios requires a realistic idealisation of environmental and operational conditions by multi-physics models. This paper presents a procedure that simulates the influence of strongly coupled FSI effects on the dynamic response of ships involved in typical collision and grounding events. Our method couples an explicit 6-DoF structural dynamic finite element scheme with a hydrodynamic method accounting for (a) 6-DoF potential flow hydrodynamic actions; (b) the influence of evasive ship speed in the way of contact and (c) the effects of hydrodynamic resistance based on a RANS CFD model. Multi-physics simulations for typical accident scenarios involving passenger ships confirm that suitable FSI modelling may be critical for either collision or grounding events primarily because of the influence of hydrodynamic restoring forces. 相似文献
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为准确评估超规范的载重3600t大通舱干货船的弯扭强度及变形水平,采取全船水动力分析及全船有限元直接计算的方法,对各工况下的主要载荷参数进行长期预报,推导出对应等效设计波各参数。根据等效设计波求出各工况全船所受的波浪诱导动载荷,施加到全船有限元模型上,进而对船体弯扭强度及变形水平进行评估。比较了单舱船及货舱中部设一道横舱壁的两舱船,得出单舱船屈曲强度不足的结论,并提出改善屈曲强度的方案。 相似文献
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《Marine Structures》2004,17(5):355-384
Container ship structures are characterized by large hatch openings. Due to this structural property, they are subject to large diagonal deformations of hatch openings and warping stresses under complex torsional moments in waves. This necessitates torsional strength assessment of hull girder of container ships in their structural design stage. In this paper, a practical method for torsional strength assessment of container ship structures with transparent and consistent background is discussed based on the results from up-to-date analyses. In order to estimate the torsional response characteristics as accurately as possible, three-dimensional Rankine source method, after being validated by tank tests, is employed for estimation of wave loads on a container ship, and FE analyses are conducted on the entire-ship model under the estimated loads. Then, a dominant regular wave condition under which the torsional response of the container ship becomes maximum is specified. Design loads for torsional strength assessment that give torsional response equivalent to the long-term predicted values of torsional response are investigated based on the torsional moments on several container ships under the specified dominant wave condition. An appropriate combination of stress components to estimate the total hull girder stress is also discussed. 相似文献
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目前国内外大量的关于集装箱结构的研究大多集中于如何优化性能,整船波浪载荷预报和整船结构分析,但对超大型集装箱船的特殊布置结构研究甚少,重油舱布置于船中区域就是特殊布置结构的一例。根据某在建10000 TEU集装箱船的相关数据,对布置于船中区域重油舱直接独立建模计算,确定载荷、工况,并对重油舱结构进行应力分析与评估。该方法可为超大型集装箱船特殊布置的结构设计和计算评估提供相应的技术支持与参考。 相似文献
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破损船体剩余极限强度的影响参数与敏感度分析 总被引:1,自引:0,他引:1
在对破损船体剩余极限强度的影响参数进行分析的基础上,提出了一个对破损船体剩余极限强度影响大小的衡量指标-敏感度.根据这一衡量指标,逐一分析不同破损状态对破损船体剩余极限强度的影响程度.针对不同的船型,对破损船体剩余极限强度的影响参数进行了分析及计算,并给出了一条实船的计算结果,最后得出了一些有应用价值和指导意义的结论. 相似文献
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随着大型集装箱船的发展,针对斜浪条件下扭矩载荷特性及其结构强度的分析研究日益重要.本文采用选定的某大型集装箱船开展动态载荷(DLA)分析,建立了水动力湿表面计算模型和质量模型,研究基于扭矩传递函数和主要载荷控制参数的斜浪设计波参数确定方法,分析超越概率水平对扭矩载荷计算结果的影响.考虑典型斜浪参数和超越概率水平,分析对比DLA扭矩与船舶规范(ABS和HCSR)扭矩的差异及原因,提出集装箱船扭矩载荷计算与应用的建议.在此基础上,选定3个斜浪计算工况(45°,60°和75°)开展结构强度分析,通过分析应力计算云图,研究扭矩载荷下船体结构响应的关键位置及其应力趋势.该研究可为大型集装箱船结构设计过程中船体梁扭转强度计算、舱口角隅设计、抗扭箱强度评估等方面提供有益的参考. 相似文献
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对客滚船安全管理的规律性进行研究,可以提高管理的针对性和科学性,进一步降低各种不安全因素对客滚船航行安全的影响,防止和减少客滚船事故的发生,为全面提升客滚船航行安全系数提供事实和理论分析依据。针对近年来渤海客滚船事故的种类和起因进行了较为全面的统计,对占渤海客滚船事故比例最大的火灾事故发生的原因进行了分析。在此基础上,结合日常对客滚船管理的实际经验,指出了渤海客滚船火灾事故在船舶管理、火灾预防和控制、客滚船结构设计上存在的对火灾事故的预防和控制等方面暴露出的问题,并针对这些问题提出了相应的安全管理对策。 相似文献
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何小惠 《交通部上海船舶运输科学研究所学报》2008,31(2):128-131
详细介绍了166客位玻璃钢高速客船的研制情况,重点探讨了该船关键技术:船型及船舶主尺度的选取;线型、船体材料的选用;船体结构的优化设计以及主要机电设备的配置。同时,给出了实船的测试结果。 相似文献
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船舶浮筏系统动力学特性的影响因素研究 总被引:8,自引:0,他引:8
在船舶浮筏隔振系统的动力学特性研究中,以往的刚体分析模型会在高频段造成很大误差,本文从基于有限元的弹性体模型出发,对隔振系统的多种方案进行了模拟激励下的响应分析,讨论了影响浮筏隔振性能的结构与材料因素,如隔振支承刚度与阻尼,筏体的刚与阻尼,浮筏基座刚度与阻尼等,通过船模实验验证了所建立的动力学模型,通过灵敏度分析得到振动传递率与各影响参数间的关系。 相似文献
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Ship collision accidents are rare events but pose huge threat to human lives, assets, and the environment. Many researchers have sought for effective models that compute ship stochastic response during collisions by considering the variability of ship collision scenario parameters. However, the existing models were limited by the capability of the collision computational models and did not completely capture collision scenario, and material and geometric uncertainties. In this paper, a novel framework to performance characterisation of ships in collision involving a variety of striking ships is developed, by characterising the structural consequences with efficient response models. A double-hull oil carrier is chosen as the struck ship to demonstrate the applicability of the proposed framework. Response surface techniques are employed to generate the most probable input design sets which are used to sample an automated finite element tool to compute the chosen structural consequences. The resulting predictor-response relationships are fitted with suitable surrogate models to probabilistically characterise the struck ship damage under collisions. As demonstrated in this paper, such models are extremely useful to reduce the computational complexity in obtaining probabilistic design measures for ship structures. The proposed probabilistic approach is also combined with available collision frequency models from literature to demonstrate the risk tolerance computations. 相似文献
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The seakeeping performance of a luxury cruise ship was evaluated during the concept design phase. By comparing numerical predictions
based on 3-D linear potential flow theory in the frequency domain with the results of model tests, it was shown that the 3-D
method predicted the seakeeping performance of the luxury cruise ship well. Based on the model, the seakeeping features of
the luxury cruise ship were analyzed, and then the influence was seen of changes to the primary design parameters (center
of gravity, inertial radius, etc.). Based on the results, suggestions were proposed to improve the choice of parameters for luxury cruise ships during the
concept design phase. They should improve seakeeping performance. 相似文献
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公务船在领海和专属经济区执行维权执法任务时,存在较高的与其他船舶发生主动或被动碰撞的风险。为了准确评估公务船的耐撞性能,本文以某公务船为例,考虑多种计算工况,对目标船的耐撞性能进行动态响应计算,获得了机舱及首部区域的结构损伤、应力、能量吸收等动态结构响应,并计算获得被撞船达到临界状态时的极限撞击速度。研究成果可为公务船的防撞结构设计提供参考。 相似文献
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《船舶与海洋工程学报》2017,(2)
Ship collision accidents are rare events but pose huge threat to human lives, assets, and the environment. Many researchers have sought for effective models that compute ship stochastic response during collisions by considering the variability of ship collision scenario parameters. However, the existing models were limited by the capability of the collision computational models and did not completely capture collision scenario, and material and geometric uncertainties. In this paper, a novel framework to performance characterisation of ships in collision involving a variety of striking ships is developed, by characterising the structural consequences with efficient response models. A double-hull oil carrier is chosen as the struck ship to demonstrate the applicability of the proposed framework. Response surface techniques are employed to generate the most probable input design sets which are used to sample an automated finite element tool to compute the chosen structural consequences. The resulting predictor-response relationships are fitted with suitable surrogate models to probabilistically characterise the struck ship damage under collisions. As demonstrated in this paper, such models are extremely useful to reduce the computational complexity in obtaining probabilistic design measures for ship structures. The proposed probabilistic approach is also combined with available collision frequency models from literature to demonstrate the risk tolerance computations. 相似文献