Page 163 - 《水资源与水工程学报》2022年第6期
P. 163

! 33 " ! 6 #                      & ' ( ) & * + , -                               Vol.33No.6
               2022 $ 12 %              JournalofWaterResources&WaterEngineering                 Dec.,2022

            DOI:10.11705/j.issn.1672-643X.2022.06.20


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                            Analyticalsolutionofstressintensityfactorforclosed
                                    crackincompressioncircularholeplate

                                     PENGShaochi,JINGLaiwang,WUDi,JINGWei
                  (SchoolofCivilEngineeringandArchitecture,AnhuiUniversityofScienceandTechnology,Huainan232001,China)

                 Abstract:Thestudyofthestressintensityfactoratthecracktipundertheinteractionofmultiplestress
                 fieldsisanimportantpartoffracturemechanics ,theunderstandingofwhichiscriticaltothefracturecri
                 terionandstrengthanalysisofcompressedmaterials.Onthebasisoftheinitialsolutionofuniaxialcom
                 pressionofcircularholeplate ,thecracktipstressintensityfactorintegralequationofcircularholeplate
                 underuniaxialcompressionisderivedbysuperpositionprinciple,andtheapproximatesolutionofthein
                 tegralequationisderivedbyChebyshevpolynomial.Then,thesameproblemisanalyzedbyfiniteele
                 mentmethod ,andthesolutioniscomparedwiththeapproximatesolutionoftheintegralequation.Mean
                 while,theeffectsofcircularholesize,cracksize,cracklocationandcracksurfacefrictioncoefficienton
                 thestressintensityfactoratthecracktipareanalyzed.Theresultsshowthatthesolutionofthestressin
                 tensityfactoratthecracktipobtainedbythesuperpositionprincipleisbasicallyconsistentwiththatofthe
                 finiteelementmethod,sotheintegralequationbasedontheinitialsolutionandthesuperpositionprinci
                 pleisprovencorrect.Largercracksizeandcircularholesize ,closertotheholeedgeandsmallercrack
                 surfacefrictioncoefficientallleadtogreaterstressintensityfactors.Furthermore ,thefluctuationofthe
                 crackstressintensityfactorclosetotheholeedgeismoreobviousthanthatfarawayfromtheholeedge.
                 Keywords:compressioncircularholeplate;closedcrack;frictionalcontact;stressintensityfactor;su
                 perpositionprinciple;Chebyshevpolynomial






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