m 复合材料风力发电机组叶片屈曲有限元分析[j]

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1、34m复合材料风力发电机组叶片屈曲有限元分析*李成友周光明黄再兴/南京航空航天大学田卫国/中航(保定)惠腾风电设备有限公司andduediligenceevaluationsarticle22ndheadoffice,branch(jurisdiction),riskmanagement,marketingmanagementbranchwithintheDepartment'screditbusinesspersonassumedresponsibilityforthesupervisiona

2、ndinspectionandduediligenceevaluations.Article23rd,HeadOffice,branches(jurisdiction),riskmanagement,MarketingManagementDepartmentthroughon-siteandoff-siteinspection,investigationreport,interviewswithinvestigatorsforpre-loaninvestigationworkbywayofcon

3、ductingsupervisionandinspection,qualityevaluationpre-loaninvestigationwork,andbasedontheevaluationresults,theimplementationofdiversitymanagement.24ththecontrolandinspection(a)theimplementationofthecreditsystem:thereisnobreachofcreditpolicyrelatingtot

4、hegrantingofcreditandtheheadoffice;(B)dualcreditrating:timelinessofratings,whethertheprovisionsoftherating,ratingresultsareaccurate;(C)thesurveycontents:datacollectioniscomplete,reportwritingiscomprehensive,indicatorsanalysisisobjective,real,conclusi

5、onsandthefactsareconsistentandreasonable;(D)doubleimplementationofinvestigationssystem:practicalimplementationofdoublesystem;(E)othersupervisionandinspectionofthecontents.25thduediligenceevaluationofficesandbranches(jurisdiction),riskmanagement,Marke

6、tingManagementDepartmentagreedtocarryoutpre-loaninvestigationsupervisionandinspectionwork,evaluatewhetherinvestigatorsduediligencetodeterminewhethertheexemptionshouldbe.Investigatorsshouldbecompatiblewith.Duediligenceassessmentshouldbebasedonthefactt

7、hat,followingtheprinciplesofobjectivity,impartialityandfairness.Article26thhead9摘要：采用有限元分析的方法解决了叶片的静强度和屈曲稳定性问题。首先，阐述了利用MSC.Patran建立复合材料叶片的有限元模型的步骤和方法；其次，利用蔡-吴(E.M.Wu)失效准则和Hill-蔡(S.W.Tsai)强度理论校核了几种主要承力材料的强度；最后，结合有限元二阶屈曲模态计算结果，讨论了风机叶片结构的屈曲稳定性。关键词：风力发电机

8、；叶片；复合材料；有限元分析中图分类号：TK83文献标识码：B文章编号：1006-8155（2008）05-0040-07FiniteElementAnalysisofBucklinginthe34mCompositeMaterialWindTurbineBladesAbstract:Theaimofthispaperistoinvestigatethestaticstrengthandbucklingstabilityofthe34mcompositewindturbineblades(CWT