基于共同规范的散货船结构强度研究

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1、上海交通大学硕士学位论文基于共同规范的散货船结构强度研究姓名：吴漪申请学位级别：硕士专业：船舶与海洋结构物设计制造指导教师：杨启20080101摘要意义和其关键技术要点。全面介绍了散货船共同规范的特点和基本内容，并与中国船级社规范作了对比说明。而后通过实船计算分析说明共同规范对将来新造散货船结构的影响。实船的计算分析将运用有限元软件PATRAN/NASTRAN来完成，所做的工作包括建立有限元模型、有限元屈服强度计算、屈曲计算、结构单元细化、疲劳强度评估。在有限元屈服计算和屈曲计算这两部分内容中，将依据中国船级社规范完成屈服和屈曲强度计算，以与依据共同规范计算得到的结果形成对比。最后通

2、过比较分析，阐述屈服与屈曲强度计算中CCS规范与共同规范的区别及影响，还有详细应力评估及疲劳强度评估计算得到的结果的影响。得到的最终结论为散货船共同规范是安全可靠、科学可行的，很有必要推广和贯彻该规范。关键词：散货船，共同规范，屈服强度，屈曲强度，详细应力，疲劳强度，有限元，直接计算IIABSTRACTSTRUCTURALSTRENGTHRESEARCHBASEDONIACSCSRFORBULKCARRIERSABSTRACTCommonStructuralRulesforbulkcarriersandoiltanksisefficientonApril1st2006.Thisist

3、hefirsttimetounifytheshipconstructionruleforIACS.Newrulesaimatsatisfyingwiththerequirementofbuildingstronger,moredurableandsuitableship.Thatwillbesaferandwillusemoresteelcomparedwitholdrules,soCSRwillmakethecostrising.ButCSRbasedonnewdesignmethod,steeldistributionwillbemorereasonable.Comparedwi

4、thexistingrules,CSRisneutral,anditissuitableforshipindustryofChina.Simultaneity,CSRwillpromotetheshipupdatingandtheindustrydevelopment,andalsoitwillreducetheeffectonoriginalmarketfromnewmarket.JBPRules’mainpointsare:netscantling、designload、hullgirderultimatestrength、directstrengthanalysis、fatig

5、ue、bucklingetc.Therearemanyexcellentviews,includingthenewerosionmodel;Andtheadvancedwaveloadmodel,thismakecalculationforloadmorereasonable;Theultimatestrengthconceptincreasethetransparenceofshipstrength;TheIIIABSTRACTdirectstrengthanalysistechnologywillbemoresuitableforlargescaleship’sdesign;Fa

6、tigueassessmenttechnologywillpromisethe25yearslifeforships.Thispaperexpoundsthesafetyrulesdevelopmentofbulkcarriers,explainthebackground、significationandmaintechnicalpoints.IntroducingtheJBPcharacteristicandbasiccontent,andcomparingwiththeCCSrules.Thenanalyzingtheeffectonnewbuildingforbulkcarri

7、erthroughaexistingshipcalculations.ThecalculationwillaccomplishedbyFEAsoftwarePATRAN/NASTRAN.ThemainprocedureiscreatingtheFEAmodel,theyieldstrengthcalculation,thebucklingstrengthcalculation,thedetailingstress,fatigueassessment.Int