Damage smoothing effects in a delocalized rate sensitivity model for metals-中国Betway体育网页登陆

摘要 Ithasbeenlongtimeestablishedthatapplicationofdamagedelocalizationmethodtosofteningconstitutivemodelsyieldsnumericalresultsthatareindependentofthesizeofthefiniteelement.However,thepredictionofreal-worldlargeandsmallscaleproblemsusingthedelocalizationmethodremainsinitsinfancy.Oneofthedrawbacksencounteredisthatthepredictedloadversusdisplacementcurvesuddenlydrops,asaresultofexcessivesmoothingofthedamage.Thepresentpaperstudiesthisunwantedeffectforadelocalizedplasticity/damagemodelformetallicmaterials.Weusesometheoreticalargumentstoexplainthefailureofthedelocalizedmodelconsidered,followingwhichasimpleremedyisproposedtodealwithit.Futureworksinvolvethenumericalimplementationofthenewversionofthedelocalizedmodelinordertoassessitsabilitytoreproducereal-worldproblems.

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Damage smoothing effects in a delocalized rate sensitivity model for metals

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