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201212ABAQUS(,210096):ABAQUS,。,,,,。:ABAQUS;;;:U416.01:A:1002-4786(2012)02-0051-04ResearchonDamagePlasticCalculationMethodofABAQUSConcreteDamagedPlasticityModelCAOMing(ArchitecturalDesign&ResearchInstituteofSoutheastUniversity,Nanjing210096,China)Abstract:ThelargeuniversalfiniteelementsoftwareABAQUShasbeenwidelyusedinnonlinearanalysisofreinforcedconcretestructure.ConcreteDamagedPlasticity(CDP)isoneofthemostimportantconcretecon-stitutivemodelinABAQUS.Thispapersummarizestheprincipleandfeaturesofthemodelthroughtheoryinfer-entialreasoningandanalysis,determinesthecomputationalmethodofconcretedamageplasticfactorsinABAQUS.Tovalidatethismethod,afiniteelementanalysisofreinforcedconcretesimplysupportedbeamisalsopresented.Keywords:ABAQUS;damage;plastic;concreteconstitutivemodel1,,,[1]。,、,,,、、[2]。,,,ABAQUS。2ABAQUS—(1):—,,()。,。,,HighwayEngineering51σtε軌tplσt0E0εtel(1-dt)E0εta)σcε軌cplσc0E0εcel(1-dc)E0εcσcub)1—y1.00.501.0εu/εcx2—。ABAQUS,,,。ABAQUSLubliner,LeeFenves(1998),,,[3]。ABAQUS,,[1];(、、);;,;,。ABAQUS,:σ=(1-d)σ(1),d,0()1(),σ。:σ=D0el(ε-εpl)(2),D0el(),εpl。—:σ=(1-d)D0el∶(ε-εpl)(3)dc、dt,:Dc=(1-dc)D0el(4)Dt=(1-dt)D0el(5)(4)(5)1,,E0,(1-dc)E0、(1-dt)E0。33.1ABAQUS,、—,、—。—,《》(GB50010—2002)[4]—。—23。,fc、ft、;εcfc;εtft。—。x≤1:y=αax+(3-2αa)x2+(αa-2)x3(6)(x=ε/εc,y=σ/fc)HighwayEngineering52201212y1.001.0x3—0.0000.0020.0040.0060.0080.0100.0120.0140.0161.00.80.60.40.20.0dc1.00.80.60.40.20.00.00000.00050.00100.00150.00200.00250.0030dt5—x>1:y=xαd(x-1)2+x(7)—。x≤1:y=1.2x-0.2x6(8)x>1:y=xαt(x-1)1.7+x(9),αa、αt、αd[4]C.2.1。Sidiroff,[5],,。:W0e=σ22E0(10):Wde=σ22Ed(11)σ:σ=(1-d)σ(12)Ed=E0(1-d)2,:σ=E0(1-d)2ε(13)(6)(9)。。x≤1:d=1-kc[αa+(3-2αa)x+(αa-2)x2]姨(14)x>1:d=1-kc[αd(x-1)2+x]姨(15)。x≤1:d=1-kt(1.2-0.2x5)姨(16)x>1:d=1-kt[αt(x-1)1.7+x]姨(17),kc=fc*/(εcE0),kt=ft*/(εtE0)。《》(GB50010—2002)[4]C.2.2。(16)(17)—ABAQUS。3.2。C30,fck=20.1MPa,ftk=2.01MPa。—,E=21.16GPa。、—4、5。44.1,4m,250mm×600mm,C30,10mmHRB4002,22mmHRB4004,10mmHRB235,6。C3D8R,*REBAR4—(x=ε/εt,y=σ/ft)HighwayEngineering5321010@100422600mm250mm4000mmPP6160140120100806040200050100150200250300350400/mm/kN—7—LAYER,Embedded,Beam,Embedded。。,fsk=400MPa,fsk=335MPa。,。4.2ABAQUS,[6],Mises,;、,。,,,,,。7。7,,,,,,,,142.81kN,214.22kN·m,[7]236.63kN·m,9.4%,,[7],。5ABAQUS,、。ABAQUS,,:a)(),—,,ABAQUS、;b)《》(GB50010—2002)[4]—,,ABAQUS,,;c)—,,,ABAQUS,。[1],,.[M].:,2005.[2],,.[J].,2011,(14):103-106.[3]ABAQUSInc.Abaqustheorymanual[Z].Provide-nce:ABAQUSInc.,2007.[4]GB50010—2002,[S].[5].[M].:,2002.[6],,.[J].,2010,27(2):26-37[7]JTGD62—2004,[S].:(1978—),,,,。:2011-10-08HighwayEngineering54
本文标题:ABAQUS损伤塑性模型损伤因子计算方法研究
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