CRACK TIP SUPERBLUNTING:EXPERIMENT,THEORY AND NUMERICAL SIMULATION-中国期刊网

摘要 Experimentalrevelationofsuperbluntingalongplanestrainpredominantcracktipsegmentisre-portedhereformodifiedpolyproplene.Aselucidatedbyaheuristicmodelofprogressivecircumferentialcold-draw,theformationofsuperbluntingcracktipdependscriticallyontheratiobetweenthecold-drawprop-agationspeedandtheloadingspeed,andcontributessignificantlytothematerialtoughening,especiallyfortheimprovementinimpacttoughness.Detailednumericalcalculationsareconductedbasedonahyperelastic-viscoplasticandanisotropicdamageconstitutivemodelatfinitedeformation.Thesimulatedresultsrecapitulatetheessentialfeaturesofcracktipsuperblunting.

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CRACK TIP SUPERBLUNTING:EXPERIMENT,THEORY AND NUMERICAL SIMULATION

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CRACK TIP SUPERBLUNTING:EXPERIMENT,THEORY AND NUMERICAL SIMULATION

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