搅拌槽内流体作用力下搅拌桨叶的应力计算

3112004JOURNALOFBEIJINGUNIVERSITYOFCHEMICALTECHNOLOGYVol.31,No.12004(,100029):,ANSYS,CBY,,,:;;:TQ051172:2003207204:,1978,E2mail:[e-mail],,,(CFD,ComputationalFluidDynamics)CBY1:800mm,800mm,CBY(;,)380mm,3mm,60mm,3,1000kg/m3,250r/min,1mPas,6105,Fluent(MRF,MultipleReferenceFrames)[1]1,,1Table1Momentandforceonanimpellerbroughtbypressureandviscousforcexyz/Nm313623116214115098/Nm010185010780010339/N10190915122611810046/N012634011135011281Fluent,Techplot,2CBY,ANSYSCAD,SAT,11Fig.1OutlineofanimpellerANSYS,mesh200solid187mesh200,,,mesh200,,Solid18710,,CAD/CAMsolid187,,,1mmANSYS,ANSYS,,:(1)mesh200;(2);(3)CFD,;(4);(5)(3)2(a),A,B,CCFD,KANSYS,K,A,B,C,2(a)A,B,C,pA,pB,pC,K,KpK|AK|=l1,|BK|=l2,|CK|=l3,,(1):pK=1/l11/l1+1/l2+1/l3pA+1/l21/l1+1/l2+1/l3pB+1/l31/l1+1/l2+1/l3pC(l1,l2,l30)(1):1/li1/l1+1/l2+1/l3(i=1,2,3),3i=11/li1/l1+1/l2+1/l3=1l1=0,pK=pA;l2=0,pK=pB;l3=0,pK=pCANSYS2Fig.2SchemeofdataexchangeANSYS(2(b),K,M,NANSYS,,pK,pM,pN,KMNSKMN),K,M,NpmaxKMN,pmaxSKMN,[2],K,M,N,(2):FK=FM=FN=13pmaxSKMN(2)K,M,NKMN,,ANSYS,(4)(1/3),,3z,(3(a),R),,31(30),,1115mm:(082004),1,31,3(bf)3(bf)MisesM3Fig.3Distributionofequivalentstressesonimpellersurfaces3:,M,,;,M,;M(3(b)),M:(1)(3(a)01167R),M;M(2)013RM,,,015R(3)(1)(2)(01167R013R),M(1)181:(2),,(2)M,(3)MM(1),CBY[3]4(1),(2)MisesMCBY,[1].2[D].[].:,2003[2].[M]..:,1997[3].[D].[].:,2000CalculationofstressofanimpelleractedbyliquidinastirredtankLiZhi2pengCuiWen2yongMaXinLiuXin2wei(CollegeofMechanicalandElectricalEngineering,BeijingUniversityofChemicalTechnology,Beijing100029,China)Abstract:ThestressofanairfoilimpellerCBYactedbyliquidinastirredtankwasanalyzedbyusingafiniteel2ementmethod.AnewmethodwasdevelopedtoexchangethedatafromtheComputationalFluidDynamics(CFD)toafiniteelementmodel.Thestressdistributionoftheimpellerpredictedbythefiniteelementmethodisingoodagreementwithexperimentalresultsgivenbytheliterature.Keywords:impeller;finiteelementanalysis;stirredtank()(78)Effectofamodifyingmethodofwood2fiberonthemechanicalpropertiesofpolyvinylchloride/wood2fibercompositeDingYun1ZhongXin1XuePing1DingHui2(11InstituteofPlasticsMachineryandEngineering,BeijingUniversityofChemicalTechnology,Beijing100029,China;21JidongSubsidiaryCompanyofShandongHuajuEnergySourcesCo.,Ltd.,Shandong,Jining272072,China)Abstract:Comparedwithonlyusingsilanecouplingagenttodealwithwood2fiber,thetwo2stepmodifyingmethodofimmersingwood2fiberintoNaOH,thenusingsilanecouplingagenttodealwithwood2fiberhasfol2lowingadvantages:theinterphasebondingofPVC/wood2fibercompositeisincreased,themechanicalpropertiesofthePVC/wood2fibercompositesuchasthetensilestrength,impactstrength,andbreakelongationratioareimprovedobviously.Keywords:polyvinylchloride;wood2fiber;composite()282004