摘要
Anumericalmodelofthesteelcatenaryriser(SCR)isbuiltbasedontheslenderrodmodel.Theslenderrodmodel,whichdescribesthebehavioroftheslenderriserintermsofthecenterlineposition,cansolvethegeometricalnonlinearityeffectively.Inamarineenvironment,theSCRisunderthecombinedinternalflowandexternalloads,suchaswaveandcurrent.Ageneralanalysisconsidersonlytheinertialforceandthedragforcecausedbythewaveandcurrent.However,theinternalflowhasaneffectontheSCR;itisessentialtoexplorethedynamicresponseoftheSCRwiththeinternalflow.TheSCRalsosufferstheliftforceandthefluctuatingdragforcebecauseofthecurrent.Finiteelementmethodisutilizedtosolvethemotionequations.Theeffectsoftheinternalflow,waveandcurrentonthedynamicresponseoftheSCRareconsidered.TheresultsindicatethattheincreaseoftheinternalflowdensityleadstothedecreaseofthedisplacementoftheSCR,whiletheinternalflowvelocityhaslittleeffectontheSCR.ThedisplacementoftheSCRincreaseswiththeincreaseofthewaveheightandperiod.AndtheincreasingwaveperiodresultsinanincreaseinthevibrationperiodoftheSCR.ThecurrentvelocitychangesthedisplacementsoftheSCRinx-andz-directions.ThevibrationfrequencyoftheSCRiny-directionincreaseswiththeincreaseofthecurrentvelocity.
出版日期
2019年01月11日（中国期刊网平台首次上网日期，不代表论文的发表时间）
