压水堆稳压器波动管疲劳寿命分析与计算的中期报告摘要：本文从中性子辐照引起的波动管金属材料的疲劳寿命着手，分析了压水堆稳压器中波动管的工作原理和受力情况，建立了相应的疲劳寿命计算模型。首先，根据各工况下波动管的应力情况，利用ANSYS软件进行了有限元模拟，并验证了模型的合理性。然后，结合压水堆核电站的工况数据，运用拉曼光谱测试技术对波动管材料的应力和应变进行了实验研究，得出了波动管材料的S-N曲线。最后，根据波动管的实际工作状态和S-N曲线，计算出了波动管的疲劳寿命。研究结果表明，波动管的疲劳寿命与材料属性、工作状态、应力水平等因素密切相关，需要综合考虑各种因素才能保证其安全可靠运行。关键词：压水堆稳压器；波动管；疲劳寿命；有限元模拟；拉曼光谱Abstract:Startingfromthefatiguelifeofmetalmaterialsintheneutronirradiationcausedbythefatiguelifeofthebellowsinthepressurizedwaterreactorstabilizer,thispaperanalyzestheworkingprincipleandstresssituationofthebellowsinthepressurizedwaterreactorstabilizer,andestablishesthecorrespondingfatiguelifecalculationmodel.Firstly,accordingtothestresssituationofthebellowsundervariousworkingconditions,thefiniteelementsimulationwascarriedoutbyusingANSYSsoftware,andtherationalityofthemodelwasverified.Secondly,combinedwiththeworkingconditiondataofpressurizedwaterreactornuclearpowerplant,thestressandstrainofthebellowsmaterialwerestudiedexperimentallybyusingRamanspectroscopy,andtheS-Ncurveofthebellowsmaterialwasobtained.Finally,basedontheactualworkingstateofthebellowsandtheS-Ncurve,thefatiguelifeofthebellowswascalculated.Theresearchresultsshowthatthefatiguelifeofthebellowsiscloselyrelatedtothematerialattributes,workingconditionandstresslevel,anditisnecessarytoconsidervariousfactorscomprehensivelytoensureitssafeandreliableoperation.Keywords:pressurizedwaterreactorstabilizer;bellows;fatiguelife;finiteelementsimulation;Ramanspectroscopy.