简介:一个灵活起床人的机械表演是比处于强烈环境条件的另外的起床人更突出的。基于lumped团方法,灵活起床人配置纳入了漂浮的生产存储的一个陡峭的波浪并且(FPSO)卸载被用于全球分析以便获得灵活起床人的静态、动态的行为。起床人在每结束与一个节点被划分成一系列笔直地无团的线片断。当团,重量,和快活都是到节点的lumped时,仅仅线的轴、扭力的性质被建模。四不同快活模块长度被做了表明模式选择的重要性,以便证实最佳快活模块长度。在灵活起床人不对海洋水流很敏感的敏感学习表演的结果,和快活模块能减少Von协定压力并且改进灵活起床人的机械表演。更短的快活模块长度能减少起床人在快活模块长度的一个特定的范围的有效紧张当另外的参数是时,常数,而是它能也增加起床人的最大的弯曲。作为结果,各种起床人表演应该被考虑以便选择最适当的快活模块长度。
简介:Globalstrengthisasignificantitemforfloatingproductionstorageandoffloading(FPSO)design,andsteelweightplaysanimportantroleinthebuildingcostsofFPSO.Itisthemaintasktoconsiderandcombinethesetwoaspectsbyoptimizinghulldimensions.Therearemanyoptionalmethodsfortheglobalstrengthanalysis.AcommonmethodistousetheABSFPSOEaglesoftwaretoanalyzetheglobalstrengthincludingtherulecheckanddirectstrengthanalysis.AndthesamemethodcanbeadoptedfortheFPSOhulloptimizationbychangingthedepth.Aftercalculationandoptimization,theresultsarecomparedandanalyzed.Theresultscanbeusedasareferenceforthefuturedesignorquotationpurpose.
简介:Bundledhybridoffsetriser(BHOR)globalstrengthanalysis,whichismorecomplexthansinglelineoffsetriserglobalstrengthanalysis,wascarriedoutinthispaper.Atfirst,theequivalenttheoryisusedtodealwithBHOR,andthenitsglobalstrengthinmanifoldcaseswasanalyzed,alongwiththeuseofathree-dimensionalnonlineartimedomainfiniteelementprogram.Sothemaxbendingstress,maxcircumferentialstress,andmaxaxialstressintheBHORbundlemainsection(BMS)wereobtained,andthevaluesofthesethreestressesineachriserwereobtainedthroughthe'stressdistributionmethod'.Finally,theMaxVonMisesstressineachriserwasgivenandacheckwasmadewhetherornottheymetthedemand.Thispaperprovidesareferenceforstrengthanalysisofthebundledhybridoffsetriserandsomeotherbundledpipelines.