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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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超超临界机组锅炉过热器耦合应力强度因子分析
, PP. 83-87
Keywords: 超超临界,锅炉,过热器,t92材料,径向裂纹,内压,热应力,耦合,应力强度因子,有限元模型
Abstract:
为揭示超超临界机组锅炉含外径裂纹的t92材料过热器管道在热应力和内压耦合作用下裂纹尖端应力场的分布情况,基于t92材料弹性模量e随温度变化的影响,运用有限元软件ansys建立了过热器管外壁含径向裂纹的有限元模型,获得了应力强度因子在热应力和内压耦合作用下的变化规律,并根据力是矢量叠加原理,分析了在内压、热应力及其共同作用下裂纹尖端应力场变化的原因。结果表明:在相同内外壁温差作用下,应力强度因子随着内压的增大而逐渐增大;热应力会导致仅内压作用下的t92材料过热器管外壁含径向裂纹的尖端应力场发生变化;在内压、热应力耦合作用下,应力强度因子随温差的增大而有所减小。
| [1] | 张祺,王家庆,陈国宏,等.t92/super304h异种钢焊接接头的组织结构和力学性能[j].中国有色金属报,2013,23(2):396-402.zhangqi,wangjiaqing,chenguohong,etal.microstructuresandmechanicalpropertiesoft92/super304hdissimilarsteelweldjoints[j].thechinesejournalofnonferrousmetals,2013,23(2):396-402.
|
| [2] | 宋有明,余新海,王家庆,等.t92/hr3c异种钢焊接接头高温拉伸变形及断裂行为[j].材料热处理学报,2012,33(2):72-78.songyouming,yuxinhai,wangjiaqing,etal.tensileplasticdeformationandfracturebehavioroft92/hr3cdissimilarweldedjointsathightemperatures[j].transactionsofmaterialsandheattreatment,2012,33(2):72-78.
|
| [3] | ennispj,zielinska-lipieca,wachtero.microstructuralstabilityandcreeprupturestrengthofthemartensiticsteelp92foradvancedpowerplant[j].actamaterialia,1997,45:4901-4907.
|
| [4] | 王学,潘乾刚,刘洪,等.超超临界机组用p92钢焊接细晶区高温蠕变行为研究[j].中国电机工程学报,2010,30(2):104-108.wangxue,panqiangang,liuhong,etal.high-temperaturecreepbehaviouroffinegrainedheat-affectedzoneinp92weldmentusedinultrasupercriticalunits[j].proceedingsofthecsee,2010,30(2):104-108.
|
| [5] | falatl,výrostkováa,homolováv,etal.creepdeformationandfailureofe911/e911andp92/p92similarweldjoints[j].engineeringfailureanalysis,2009,16:2114-2120.
|
| [6] | 署恒木.厚壁圆筒中多条裂纹的热应力强度因子[j].石油大学学报(自然科学版),1995,19(6):73-75.shuhengmu.thermalstressstrengthenfactorofthemultiplecrackincylinderwiththickwall[j].journaloftheuniversityofpetroleum,china(editionofnaturalscience),1995,19(6):73-75.
|
| [7] | 宋杰,王作文,孟小平.热-应力耦合场作用下含缺陷压力管道的应力强度因子研究[j].森林工程,2010,26(3):33-65.songjie,wangzuowen,mengxiaoping.studyonstressintensityfactorofpenstockwithdeficiencyunderheat-stresscouplingfield[j].forestengineering,2010,26(3):33-65.
|
| [8] | gongy,caoj,linj,etal.assessmentofcreeprupturepropertiesfordissimilarsteelsweldedjointsbetweent92andhr3c[j].fatigue&fractureofengineeringmaterials&structures,2010,34(2):83-86.
|
| [9] | 刘俊建,陈国宏,余新海,等.t92/hr3c异种钢焊接接头的组织结构和力学性能[j].材料热处理学报,2011,32(2):54-59.liujunjian,chenguohong,yuxinhai,etal.microstructureandmechanicalpropertiesoft92/hr3cdissimilarsteelweldingjoints[j].transactionsofmaterialsandheattreatment,2011,32(2):54-59.
|
| [10] | 陈国宏,余新海,王家庆,等.高温时效t92/hr3c焊接接头的组织和力学性能[j].材料热报,2011,32(9):90-95.chenguohong,yuxinhai,wangjiaqing,etal.microstructureandmechanicalpropertiesoft92/hr3cdissimilarsteelweldingjointsafterhightemperatureaging[j].transactionsofmaterialsandheattreatment,2011,32(9):90-95.
|
| [11] | jinugr,sathiyap.failureanalysisont92steeltubeandcomparedwithpredictednumberofcyclestofailureusingcoffin-mansonequation[j].internationaljournalofengineeringscienceandtechnology,2010,2(10):5017-5033.
|
| [12] | 姚兵印,李太江,刘福广,等.hr3c/t91异种耐热钢焊接接头的力学性能及界面蠕变失效行为研究[j].中国电机工程报,2011,31(11):92-97.yaobingyin,litaijiang,liufuguang,etal.mechanicalpropertiesandinterfacicalcreepfailurebehaviorsbetweenhr3c/t91dissimilarheat-resistantsteelweldedjoints[j].proceedingsofthecsee,2011,31(11):92-97.
|
| [13] | yoshizawam,igarashim,moriguchik,etal.effectofprecipitatesonlong-termcreepdeformationpropertiesofp92andp122typeadvancedferriticsteelsforuscpowerplants[j].materialsscienceandengineeringa,2009,162-168.
|
| [14] | caoj,gongy,yangzg.microstrueturalanalysisoncreeppropertiesofdissimilarmaterialsjointsbetweent92martensiticandhr3causteniticsteels[j].materialsscienceandengineeringa,2011,4.
|
| [15] | perlm.stressintersityfactorsforlargearraysofradialcracksinthick-walledsteelcylinders[j].engineeringfracturemechanics,1986,25(1):341-348.
|
| [16] | 程靳,赵树山.断裂力学[m].北京:科学出版社,2006.chengjin,zhaoshushan.crackmachnics[m].beijing:sciencepress,2006(inchinese).
|
| [17] | 温睿麟,王小迎,李朝,等.含组合缺陷联箱剩余寿命有限元计算分析[j].陕西电力,2011,39(9):70-72.wenruilin,wangxiaoying,lichao,etal.finiteelementanalysisofheaderremaininglifecontainingcombinationofdefects[j].shanxielectricpower,2011,39(9):70-72.
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