学科分类
/ 1
6 个结果
  • 简介:文中所有数据采集自2013年7月4日各相关备忘录官网数据库,本季度港口国船舶检查及滞留情况,涉及PARISMOU/TOKY(1)MOU/IOMOU/MediterraneanMOU/BlackSeaM0u五个备忘录组织。其中,港口国检查滞留原则,参照中国海事局编写的《港口国监督检查缺陷英语描述与处理指南》,缺陷编码来源于TOKYOMOU/PARISMOU等官网公开资料、

  • 标签: 船舶检查 备忘录 组织 港口国监督检查 港口国检查 中国海事局
  • 简介:Inordertostudycavitationcharacteristicsofa2-Dhydrofoil,themethodthatcombinesnonlinearcavitationmodelandmixed-iterationisusedtopredictandanalyzethecavitationperformanceofhydrofoils.ThecavitationelementsarenonlinearlydisposedbasedontheGreenformulaandperturbationpotentialpanelmethod.Atthesametime,themethodthatcombinescavityshapeforfixedcavitylength(CSCL)iterationandcavityshapeforfixedcavitationnumber(CSCN)iterationisusedtoworkoutthethicknessandlengthofhydrofoilcavitations.Throughanalysisofcalculationresults,itcanbeconcludedthatthejumpofpressureandvelocitypotentiallyexistbetweencavitationendareaandnon-cavitationsareaonsuctionsurfacewhencavitationoccursonhydrofoil.Incertainanglesofattack,thecavitationnumberhasanegativeimpactonthelengthofcavitations.Andunderthesameangleofattackandcavitationnumber,thebiggerthethicknessofthehydrofoil,theshorterthecavitationslength.

  • 标签: 2-D HYDROFOIL CAVITATION performance nonlinear theory
  • 简介:今年9月,波罗的海干散货指数(BDI)持续走高、涨势惊人,该指数9月25日报收2127点,相比年初涨幅接近200%,创下自2010年10月以来近33个月新高。素来被认为是航运市场“晴雨表”的干散货指数高涨,给市场资金提供了信心支撑,航运股出现久违的攀升。然而,“无风不起浪”,如此急促的涨势仅仅靠季节惯性增长是不足以完成的,那么还有什么隐形的推手从中发力呢?波罗的海指数还会持续飙升吗?

  • 标签: BDI 风险 结构 航运市场 波罗的海 干散货
  • 简介:Theobjectiveofthisworkistoanalysefatiguereliabilityofdeckstructuressubjectedtocorrelatedcrackgrowth.Thestressintensityfactorsofthecorrelatedcracksareobtainedbyfiniteelementanalysisandbasedonwhichthegeometrycorrectionfunctionsarederived.TheMonteCarlosimulationsareappliedtopredictthestatisticaldescriptorsofcorrelatedcracksbasedontheParis-Erdoganequation.Aprobabilisticmodelofcrackgrowthasafunctionoftimeisusedtoanalysethefatiguereliabilityofdeckstructuresaccountingforthecrackpropagationcorrelation.Adeckstructureismodelledasaseriessystemofstiffenedpanels,whereastiffenedpanelisregardedasaparallelsystemcomposedofplatesandarelongitudinal.Ithasbeenproventhatthemethoddevelopedherecanbeconvenientlyappliedtoperformthefatiguereliabilityassessmentofstructuressubjectedtocorrelatedcrackgrowth.

  • 标签: CRACK growth FATIGUE reliability DECK structures
  • 简介:综上看来,成功自由贸易(园)区的主要特点可概括为“境内关外,高度自由,便捷高效”。上海欲建自由贸易(园)区,可以在立法保障、管理体制、海关监管、金融管制、优惠政策等五大领域先行试点改革。

  • 标签: 自由贸易 浦东 管理体制 优惠政策 金融
  • 简介:<正>Glasgow,UK18th-20thAugust2014AbouttheconferenceTheconferencewillbringtogetherresearchers,practitionerstoaddressthesafetyandreliabilityissuesasapplicabletodifferentstagesintheanalysis,designconstructionandin-servicelifeofmarinestructuressuchasship,offshore,submergedstructuresandtherenewableenergystructures.Thiswillinvolveadvancedanalysisbothforstrengthandloadmodelinordertoestablishsafetylevelbothfordeterministicmodel(WSDmethod)andforreliabilitybaseddesign(LRFDmethod).Oneoftheaimsofthedesignshouldbetoachieveadequatebutnotexcessivelevelofsafetywhichcanbesatisfiedthroughreliabilitybasedmethodandthistakesintoaccountuncertaintiesofdesignvariables.CurrentmoderncodesaretryingtoprovidedesignproceduresonLRFDformatalthoughnoexplicitreliabilityanalysisisdonetoarrivethesepartialsafetyfactors.Thisconferencewilldealwithalltheseissuesandseehowthesetechniquesareappliedtovarioustypesofmarinestructures.Glasgow,thevenueforthisconferenceisacitywhichhaslotofattractions.TheworldfamousLoch-LomondisonlyfewmilesawayandEdinburghis50minutesjourneybytrain.Thecitywillalsohostthe2014CommonwealthGames.

  • 标签: 船舶安全 可靠性 国际会议 水下结构 离岸