LingTianlong, LiuDianshu, LiangShufeng, LiShenglin. Research on damage viscoelastic dynamic constitutive model of granite[J]. Journal of Mining Science and Technology, 2019, 4(5): 403-409.
Citation:
LingTianlong, LiuDianshu, LiangShufeng, LiShenglin. Research on damage viscoelastic dynamic constitutive model of granite[J]. Journal of Mining Science and Technology, 2019, 4(5): 403-409.
LingTianlong, LiuDianshu, LiangShufeng, LiShenglin. Research on damage viscoelastic dynamic constitutive model of granite[J]. Journal of Mining Science and Technology, 2019, 4(5): 403-409.
Citation:
LingTianlong, LiuDianshu, LiangShufeng, LiShenglin. Research on damage viscoelastic dynamic constitutive model of granite[J]. Journal of Mining Science and Technology, 2019, 4(5): 403-409.
DynamicmechanicalpropertiesofgraniteweretestedbyasplitHopkinsonpressurebarsystemwithconstantstrainrate.Theinitialloadingstageofstress-straincurveofgraniteislinearelasticity, andtherockmaterialhasasignificantplasticdeformationafteryielding.Yieldstrength,peakstrength andelasticmodulusareallratedependent.Basedondynamicmechanicalpropertyofgranite,theconstitutiveofZhu-Wang-Tangmodelwassimplifiedto apply on granite,and with consideration of the effectofdamageonthedynamicstrengthofgraniteunderimpactload.Theexperimentaldatawerefitted totheproposedmodel.Thefittedstress-straincurvesatdifferentstrainratesareingoodagreementwith theexperimentalones.Thisdemonstratesthattheproposeddynamicconstitutivemodelinthispapercan accuratelydescribethedynamicmechanicalpropertiesofgraniteundertheimpactload.
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