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复合型裂纹断裂的新准则_任利(7)

发布时间:2021-06-07   来源:未知    
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复合型裂纹断裂的新准则

第1期                 任利等: 复合型裂纹断裂的新准则

ticlasticboundarasthecorereioninfracturecri-p       -yg ,teria.EnnJ].EnineerinFractureMechanics gg[gg ():1982,163425432.-

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NEW FRACTURECRITERIONFOR MIXED MODECRACKS   

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1 (KeLaboratoroEnerEnineerinSaetand Disaster Mechanics,MinstroEducation,y yf gy gg fyyf    

)ColleeoArchitectureand Environment,Sichuan UniversitChendu,610065  gf y,g2 (State KeLaboratoroHdraulicand Mountain RiverEnineerinSchooloWaterResource    y yf ygg,f  

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,AbstractormixedmodeIIIcracksthelasticzonedistributionaroundcracktisisanalzedtheo F   -          -ppy

,reticall.Twoofwhichcanbeusedtoevaluatetheeffectofcracktistressfieldonrousarameters               ypgpp 

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()theshortesttothecrackti2oncetheradiusfromcracktitotheshortestlasticreionboundarrea               -p;ppgy  ,,chesthecriticalvaluethecrackstartstoroaate.Basedontheseassumtionsanewfracturecriterion             ppgpformixedodecrackisdeveloed.Thecomarisonswiththeexistinfracturecriterionsandtheexeri -m           -ppgp mentalresultsshowtheresentcrackroaationcriterionivesanareementoodredictionwiththe              pppggggp,,exeriments.Moreoverthelimitationoftheexistinsinlearameter(KⅠCorKⅡC)criterionareresent        pggpp andtheeffectofthecracktistressfieldonthemixedodecrackroaationisalsodiscussedindetail.          -m       pppg 

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