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舰炮武器系统作战效能建模与评估 总被引:1,自引:0,他引:1
舰炮武器系统作战效能是对舰炮武器在实战条件下完成防空、对海和对岸任务程度的综合度量,评估舰炮武器系统作战效能可以鉴定舰炮武器整体战术技术性能和作战使用性能.本文通过对舰炮武器系统作战过程的分析,利用WSEIAC模型和层次分析法建立了舰炮武器系统作战效能评估数学模型,并进行了实例的验证.结果表明,该模型与现行武器系统试验数据结合,可以对舰炮武器系统的作战效能进行评估,具有一定的可信性,能够为舰炮武器系统作战效能的评估提供有效且便于操作的方法. 相似文献
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以某型舰炮为结构模型,运用可靠性的方法对其在设计、生产过程中可靠性进行分析和预测,达到对舰炮可靠性技术研究的目的。借助可靠性试验有效地对舰炮进行可靠性评估和评定,提出了小口径舰炮达到规定的可靠性指标的方法。 相似文献
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舰炮武器系统作战能力评价方法 总被引:2,自引:2,他引:0
本文提出了以WSELAC模型、幂指数法和灰色层次评估法为基础的综合量化评从方法,建立了舰炮武器系统作战能力指标系。利用这种方法,可对舰炮武器系统的可靠性、维修性、打击能力、反应时间、威力范围和使用性能等进行综合评价,定量分析不同系统的作战能力。 相似文献
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模拟训练已经被证明是一种有效可行的训练方式,对受训学员的操作进行评估则是模拟训练中必不可少且很有研究价值的一部分。本文从对教育学和心理学的理论研究出发,提出了海上溢油应急反应模拟训练综合评估的总体方案,使整个评判过程在正确的理论指导下有效的进行。 相似文献
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This study asses the effectiveness of classroom-based bridge resource management (BRM) training for junior naval officers, in which general principles of human behaviour and performance in teams and under stress were conveyed. Although BRM training is recommended by the International Maritime Organization and is increasingly common in seafaring, very little is known about whether the adaptation of crew resource management (CRM) training from aviation to the maritime domain has been successful and what type of training is effective. A study with a quasi-experimental, two-factorial mixed design was conducted with BRM training as the between factor and time as the within factor. For 117 study participants, evaluation criteria were assessed on all levels as defined by Kirkpatrick (Train Dev J, 178–192 1979): subjective training evaluation, knowledge, attitudes and behaviour as well as performance while commanding a vessel during a real-world exercise. BRM participants showed better subjective training evaluations and more BRM-related knowledge than controls. Training did not produce differences between groups regarding BRM-related attitudes, the demonstration of non-technical skills or the overall success in the real-world exercise. Overall, BRM training effectiveness was rather low, which can most probably be attributed to the focus of training on generalizable knowledge, skills and attitudes at the expense of their specific application to the context of the real-world exercise. In the design of BRM and CRM training courses alike, the effective application of general principles to a given context must be defined, and the application must be emphasised during training delivery. 相似文献
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桩群阻力的理论研究水平等,对于单桩绕流阻力特性尚未彻底研究清楚,而群桩有着不同于单桩的独特力学特性,其影响因素众多,关系错综复杂,所以寻求桩群阻力简化计算方法成为该领域内的一种主流。借助于循环水槽物理模型试验数据结果建立无壁面参数边界层模型,用于计算低雷诺数桩群绕流阻力,该模型的显著特点是工程实用性强,由于不考虑壁面参数,即简化了计算过程,同时计算结果也令人满意,计算值与实测数据的最大误差低于10%。 相似文献
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The extreme wave and current response of a typical North Sea jack-up drilling platform has been calculated using nonlinear, stochastic, time-domain analysis techniques. A statistical treatment of the response-time histories has been performed. Appropriate probability distributions have been fitted to simulated response amplitudes and extrapolated to determine extreme values in storms of 3 or 6 h duration. Nonlinear geometric effects and dynamic effects are also addressed.
The results of the nonlinear time-domain analyses are compared to the results of more simplified methods used in jack-up designs. 相似文献
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Evaluation and selection of the ship collaborative design resources based on AHP and genetic and simulated annealing algorithm 总被引:2,自引:1,他引:1
HE Ze Qiu Chang-hua WANG Neng-jian YAO Ming-zhu 《船舶与海洋工程学报》2006,5(1):23-30
1Introduction Theshipdesigninvolvesshipyards,ship owner,classi ficationsociety,shipresearchinstituteandsoon,while theshipcollaborativedesignneedsthecooperationbe tweenthedesignersfromdifferentdepartmentsand thosewithdiverseknowledge.Thus,intheshipcollab o… 相似文献
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The problem with fatigue lifetime estimation of explosive cladded transition joints under random loading conditions has been described. The paper presents the fatigue test results performed for the random state of tension-compression under a generated spectrum according to the Pierson-Moskowitz model. The obtained spectrum has a non-Gaussian characteristic. The tested material consists out of a transition joint clad with four layers of aluminium alloy A5083, A1050, Titanium Grade 1 and steel Grade D. The material has been tested for the existence of residual stresses after the welding process with the hole drilling method. The welding process has been also simulated with ANSYS and the residual stresses have been generated for the Goldak volumetric distribution. The obtained values of residual stresses comprise to the values of real tests performed for the hole drilling method. The information about the residual stress values have been taken into account in the process of fatigue lifetime estimation in the form of non-zero mean stresses compensation inside the clad. The fatigue life has been calculated with the use of the frequency domain method. The Goodman mean stress compensation model has been used in the process of residual stress compensation. The non-gaussianity has been compensated with the use of the Bracessi formula. The obtained fatigue life assessment results have been compared with stand test results. The calculated results are within the scatter area of 3, but individual scatter values have been calculated for calculated series. 相似文献