简介:Thispaperaimstoinvestigatethehydrodynamicbehaviorofatensionlegplatform(TLP)whenthetendonconnectionanglesarevariedat90°,70°,50°,and30°.ThreedifferenttypesofloadingconditionsareappliedtotheTLP.Conditionsinclude100-yearhurricanestormperiod,regularwavesandnoloading.TheTLPdisplayedmajorresponseinthepitchdegreeoffreedom.Amaximumreductionof14%inpitchrotationisachievedwhen100-yearhurricanestormconditionsareappliedtotheTLP.Thisoccurredin0°loadingsat30°tendonconnectionangleascomparedto90°tendonconnectionangle.Reductioninpitchrotationisalsoachievedintheregularwaveloadings.Amaximumof9%inpitchrotationisachievedduring0°waveloadingat30°tendonconnectionangleascomparedto90°.Whenthetendonconnectionangleisreducedfrom90°to30°,thenaturalfrequencyoftheTLPincreasedbothinpitchandyawdegreesoffreedomby2.55%and2.40%,respectively.
简介:ThispaperpresentstheHillinstabilityanalysisofTensionLegPlatform(TLP)tetherindeepsea.The2-Dnonlinearbeammodel,whichisundergoingcoupledaxialandtransversevibrations,isapplied.ThegoverningequationsarereducedtononlinearHillequationbyuseoftheGalerkin'smethodandthemodessuperpositionprinciple.TheHillinstabilitycharteduptolargeparametersisobtained.AnimportantparameterMisdefinedandcanbeexpressedasthefunctionsoftetherlength,theplatformsurgeandheavemotionamplitudes.Someexamplestudiesareperformedforvariousenvironmentalconditions.Theresultsdemonstratethatthenonlinearcouplingbetweentheaxialandtransversevibrationshasasignificanteffectontheresponseofstructure.ItneedstobeconsideredfortheaccuratedynamicanalysisoflongTLPtethersubjectedtothecombinedplatformsurgeandheavemotions.
简介:华南海在深海的区域包含巨大的油和煤气的资源。然而,为深海的探索的钥匙之一,深海的漂浮平台的调查,是很不适当的。在这份报纸,作者在华南海环境学习了并且比较水动力学和典型深海的平台的全球运动行为。水动力学漂浮的平台的三种主要类型当模特儿,例如半能沉入水中,紧张腿站台(TLP),并且捆绑海岸警卫队女子后备队队员,它能潜在地在华南海被利用,被使用3-D潜力理论建立。另外,显著地影响水动力学的一些重要考虑被给。在及时,在在100-y,10-y,和1-y的变化时间的风,随机的波浪,和电流下面的领域归还时期环境条件的频率领域以及全球运动的RAO被预言,比较,并且分析。结果显示举和TLP的特别沥青运动是有利的。当随机的波浪的高峰时期是低的时,Truss海岸警卫队女子后备队队员的举反应与TLP的完美、可比较。然而,沥青运动捆绑海岸警卫队女子后备队队员比的非常地大半能沉入水中并且TLP。