学科分类
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10 个结果
  • 简介:航海教育是国家教育体系中的重要组成部分。作者通过互联网对国外部分航海院校进行了调查和分析。文中包括具有参考价值的世界海事院校网址及外国航海院校的资料。

  • 标签: 国外航海教育 网址 教育思想 学制 课程设置
  • 简介:BasedonthetraditionalSmoothedParticleHydrodynamics(SPH)algorithm,thelinked-listsearchalgorithmcombinedwiththevariablesmoothinglengthandsquaresupportdomainwasputforwardtoimprovethecalculationefficiencyandguaranteethecalculationaccuracy.Thephysicalprocessofhighvelocityfragmentimpactonabroadsideliquidcabinwasprogrammedforsimulation.ThenumericalresultsagreedwellwiththoseofthegeneralsoftwareANSYSAUTODYN,whichverifiestheeffectivenessandfeasibilityofthenumericalmethod.Fromtheperspectiveoftheouterplatethicknessoftheliquidcabin,thewidthoftheliquidcabin,andincidentangleofthefragment,theinfluenceoftheseparametersonprotectivemechanismswasanalyzedtoprovideabasisforprotectivedesignofabroadsideliquidcabin.Resultsshowthattheinfluenceofouterplatethicknessisnotobvious;therefore,theconventionaldesigncanbeadoptedinthedesignoftheouterplate.Thewidthoftheliquidcabinhasagreatinfluenceontheresidualvelocityofthefragmentandthewidthoftheliquidcabinshouldbedesignedtobeaswideaspossibleunderthepremiseofmeetingotherrequirements.Thereisacertainincidentangleinwhichthevelocityattenuationofthefragmentismostobvious,andthehigh-pressurezoneneartheinnerplateisasymmetric.Theinnerplateofliquidcabinshouldbestrengthenedaccordingtothehullform,principaldimensions,andvulnerablepoints.

  • 标签: liquid CABIN high VELOCITY FRAGMENT SPH
  • 简介:大型水面舰船的防护壁需要设计成工作在薄膜应力状态下,利用能量法推导了在爆炸荷载作用下防护壁塑性大变形的计算公式、探讨了防护壁的最大承载能力,对防护壁的设计要求进行了讨论,与国外发表的有关试验结果进行了计算比较,结果表明该方法具有一定的应用价值。

  • 标签: 防护舱壁 爆炸荷载 能量法
  • 简介:灵便船型在大西洋航行运营过程中,往往航次之间做承载的货种不同,甚至会遇到船舶货舱中脏货与清洁货的衔接转换,这给船舶的洗工作带来了难度,也给验工作带来了验不通过的风险。通过分析船舶备的不同标准,结合工作中的实例,研究大西洋常见脏货的备措施,如石油焦、水泥、硫磺、盐等货种如何进行备达到船舶装粮标准,以便船舶顺利通过验

  • 标签: 大西洋 船舶货舱 改装 运营过程 工作带 验舱
  • 简介:2017年以来,浙江海事局以习总书记在浙江提出的“走在前列”为工作目标,贯彻落实交通运输部和省委省政府决策部署,紧紧围绕加快推进“最多跑一次”改革主线,在简政放权上谋突破,在事中事后监管上促高效,在优化服务上求创新,大力推动海事职能转变,取得积极进展。

  • 标签: 海事局 浙江 改革 政府决策 职能转变 运输部
  • 简介:Toprovideasimulationsystemplatformfordesigninganddebuggingasmallautonomousunderwatervehicle’s(AUV)motioncontroller,asix-degreeoffreedom(6-DOF)dynamicmodelforAUVcontrolledbythrusterandfinswithappendagesisexamined.Basedonthedynamicmodel,asimulationsystemfortheAUV’smotionisestablished.ThedifferentkindsoftypicalmotionsaresimulatedtoanalyzethemotionperformanceandthemaneuverabilityoftheAUV.InordertoevaluatetheinfluencesofappendagesonthemotionperformanceoftheAUV,simulationsoftheAUVwithandwithoutappendagesareperformedandcompared.TheresultsdemonstratetheAUVhasgoodmaneuverabilitywithandwithoutappendages.

  • 标签: AUTONOMOUS UNDERWATER VEHICLE (AUV) motion performance
  • 简介:Rigidblockingmassesarelocatedinthetypicalbasestructureofapowercabinbasedontheimpedancemismatchprinciple.Bycombiningtheacoustic-structuralcouplingmethodandstatisticalenergyanalysis,thefull-bandvibrationandsoundradiationreductioneffectofvibrationisolationmasseslocatedinabasestructurewasresearched.Theinfluenceoftheblockingmass’cross-sectionsizeandshapeparametersandthelayoutlocationofthebaseisolationperformancewasdiscussed.Furthermore,theeffectivenessofrigidvibrationisolationdesignofthebasestructurewasvalidated.Theresultsshowthatthemediumandhighfrequencyvibrationandsoundradiationofapowercabinareeffectivelyreducedbyablockingmass.Concerningweightincrementandsectionrequirement,suitablyincreasingtheblockingmasssizeandsectionheightandreducingsectionwidthcanresultinanefficiency-costratio.

  • 标签: RIGID ISOLATION BLOCKING mass parameters power
  • 简介:3月8日,“美丽号”邮轮首航天津,这是天津港2014年迎来的首艘国际豪华邮轮。“美丽号”邮轮,英国籍,9~18045米,宽25.46米,吃水6米,总吨30277,船上进出境旅客798人次,进出境船员373人次。针对邮轮安全航行的特殊要求,东疆海事局量身定制,为邮轮提供集通航保障、

  • 标签: “一站式”服务 天津港 海事局 邮轮 安全航行 量身定制