A viscoelastic-plastic constitutive model with Mohr-Coulomb yielding criterion for sea ice dynamics-中国期刊网

摘要 Anewviscoelastic-plastic(VEP)constitutivemodelforseaicedynamicswasdevelopedbasedoncontinuummechanics.Thismodelconsistsoffourcomponents:Kelvin-Vogitviscoelasticmodel,Mohr-Coulombyieldingcriterion,associatednormalityflowruleforplasticrehololgy,andhydrostaticpressure.Thenumericalsimulationsforicemotioninanidealizedrectangularbasinweremadeusingsmoothedparticlehydrodynamics(SPH)method,andcomparedwiththeanalyticalsolutionaswellasthosebasedonthemodifiedviscousplastic(VP)modelandstaticicejamtheory.ThesesimulationsshowthatthenewVEPmodelcansimulateicedynamicsaccurately.ThenewconstitutivemodelwasfurtherappliedtosimulateicedynamicsoftheBohaiSeaandcomparedwiththetraditionalVP,andmodifiedVPmodels.TheresultsoftheVEPmodelarecomparedbetterwiththesatelliteremoteimages,andthesimulatediceconditionsintheJZ20-2oilplatformareaweremorereasonable.

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A viscoelastic-plastic constitutive model with Mohr-Coulomb yielding criterion for sea ice dynamics

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A viscoelastic-plastic constitutive model with Mohr-Coulomb yielding criterion for sea ice dynamics

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