Impact Buckling and Post-Buckling of Elasto-Viscoplastic Cylindrical Shell Under Torsion-中国期刊网

摘要 Thedynamictorsionalbucklingandpost-bucklingofelasto-plasticcircularcylindricalshellisstudied.BytheusageoftheBodner-Partomconstitutiverelation,thepresentvisco-plasticproblemistreat-edasanorthotropicelasticproblem.Basedonthenonlinearlargedeflectionshelltherory,thegoverningdynamicbucklingequationissolvedbytheRunge-Kuttamethod,andthecriticalbucklingstressisdeter-minedbytheB-Rcriterion.Thepresentpaperismainlyfocusedontheimperfectionsensitivity,thestrainratesensitivity,andthedynamicpost-bucklingcharactersfortheshellloadeddynamicallywithaconstantshearstrainrate.Numericalresultsshowthatthecriticalshearstressandimperfectionsensitivitywillin-creasewiththeincreaseofstrainrate.Itisfoundthattheelasticbucklingstressismoresensitivetoimperfectionthanthevisco-plasticbuckling.Thepresentresearchalsorevealssomedynamicpost-bucklingcharactersforthecylindricalshell,anditisshownthattheshellwillvibra

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Impact Buckling and Post-Buckling of Elasto-Viscoplastic Cylindrical Shell Under Torsion

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Impact Buckling and Post-Buckling of Elasto-Viscoplastic Cylindrical Shell Under Torsion

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