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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KLDMN:O346.1;TV16 OPQRS:A OTUN:1672643X(2022)06015908
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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