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舰船总布置中的综合评估模型及其应用研究 总被引:2,自引:0,他引:2
为解决舰船总布置设计的复杂性和多样性带来总布置多方案评估的困难,针对舰船总布置设计建立多目标综合评估模型,在对蚁群算法做出适应性改进的基础上,提出多专家综合评估算法,通过文章介绍的舰船总布置设计的数学模型及评估算法的处理流程,可有效应用于舰船总体布置设计,实现自动舰船总布置多方案评估选优,有效地解决了工程问题,该方法可提高舰船总布置设计综合评估的自动化程度。 相似文献
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为增强舰船的生存能力,设计舰船火灾爆炸危险性评估与预警系统。从舰船自身可燃物、舰船火源、人为因素以及外界环境等角度出发,选取可燃物数量、舰船电气故障短路等16个评估指标构建舰船火灾爆炸危险性评估指标体系,采用模糊评估方法构建模糊综合评估模型,基于评估指标与评估等级间的模糊隶属度,获取最终评估结果。采用数据挖掘技术分析历史舰船火灾爆炸危险性评价结果生成规则库,待评估舰船的相关信息通过此规则库后可得到危险性等级,若达到设定的预警标准,即发出危险性预警通知。实验结果显示该系统所选的评估指标具有较高可应用性,能够准确评估舰船火灾爆炸危险性,并进行预警,避免事故的发生。 相似文献
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The effects of stochastic characteristics of materials on the reliability of ship hulls made of composite materials under longitudinal moment were extensively studied using reliability and sensitivity calculations of a composite ship hull which was sagging.The reliability indices and failure probabilities of the ship in three kinds of failure modes (buckling,material failure,and ultimate collapse) were calculated by the surface response method and JC method.The importance factors of random variables in stochastic models,such as the model errors in predicting the ultimate longitudinal strength of ship and the longitudinal bending moment that the ship withstands,as well as the stochastic characteristics of materials in the models used,were calculated.Then,the effects of these random variables,including the stochastic characteristics of materials on the reliability index and the failure probability of ships which were sagging,were discussed with their importance factors.The results show that the effects of stochastic characteristics of materials on the reliability of ship hulls made of composite materials should be considered during the reliability assessment of composite ships.Finally,some conclusions and recommendations were given for high-speed ship design and safety assessment. 相似文献
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基于属性识别理论的船舶安全性评价模型 总被引:1,自引:0,他引:1
基于属性识别理论能对事物进行有效识别和比较分析的原理,构建船舶安全性评价的属性识别模型,对船舶安全性进行评价。在指标权重的确定上,把熵值法和相容矩阵法相结合,既能较好地反映决策者的主观意图,又使权重系数具有客观性,提高模型评价的可信度。通过实例对模型的可靠性进行检验,评价结果与实际基本相符,该评价模型具有一定的实际应用价值。 相似文献
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该文对舰艇自防御系统指挥决策中的威胁评估和武器分配模型进行了研究。研究了一种改进的灰色关联度的威胁评估方法,使其能够满足舰艇自防御系统的实时性和准确性;在威胁评估的基础上,研究了一种改进的模拟退火算法的武器分配方法,按一定的分配原则和约束条件,使舰艇自防御系统的抗击效率最大。 相似文献
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绿色船舶及其评价指标体系研究 总被引:1,自引:0,他引:1
随着近年来一系列更为严格的船舶防污染公约、法规的生效,船舶绿色度成为设计满足未来需求的绿色船舶的不可或缺一环。剖析绿色船舶的定义及内涵,将船舶设计阶段和废弃阶段纳入到船舶生命周期中,在全面系统地分析绿色船舶生命周期各阶段特点的基础上,构建了评价船舶绿色度的指标体系,确定了各指标的评判准则,为进一步定量评价船舶的绿色度奠定了基础,也为船舶设计和管理部门提供了参考依据。 相似文献
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In the past fifteen years, the attention of ship safety treatment as an objective rather than a constraint has started to sweep through the whole maritime industry. The risk-based ship design (RBD) methodology, advocating systematic integration of risk assessment within the conventional design process has started to takeoff. Despite this wide recognition and increasing popularity, important factors that could potentially undermine the quality of the results come from both quantitative and qualitative aspects during the risk assessment process. This paper details a promising solution by developing a formalized methodology for risk assessment through effective storing and processing of historical data combined with data generated through first-principle approaches. This method should help to generate appropriate risk models in the selected platform (Bayesian networks) which can be employed for decision making at design stage. 相似文献
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