稀土磁性塑料充模流动过程模拟

2005.No.929541610064TF124.39;TQ322.662B1001-2168(2005)09-0041-06Mould!illingFlowProcessSimulationofRare!earthMagneticPlastics#$%&’(!)*+,-./012+,-3%,0!40(1+5.6012!70128#09:*(1.10;=0?)+@:12’*+#09:*(1ABCCAD+@:01(EAbstractF5:=:GHG209(HI:(;0G=GJ%KLM(21?09NH(?09O(??K(1K01;?02(?KI)M(1GJ:02:N=*=9(N0HH(=)=:GM?=P5::GHG209(HN(=(M?=+(??(01KI)1G1H01(==2=0G1(1(H)0?9:1GHG2)+O((NNH0K?G?(IH0:?:JHGO9G1?0?*?0;Q*(?0G1(1K?:JHGOMGKHGJ%KL=:0K01?:JK012)?MGJ0179?0G1MG*HKP5:0MGKHO(*K?GGN?0M0R?:0179!?0G1MG*HKK021+019H*K012?:N=*=*11=+?:2(?(1K?:9GGH012(1KGH0K0J09(?0G1?0MGJNH(?0901=*110129:(11H+?9P5:4N=0M1?(1K(1(H)0:GO?:(?%KLMH?012?G9S9G1JG=M?G?:JHGO9:(=(9?=0?09GJN*KGNH(?090?)9G1?01*G*JH*0K(1KJGHHGO?:JHGOMGKHGJNGO=H(OJH*0KP-?:(*H?=(:02:;09G0?)(1K0?JHGO(2N=*=K=GN01N=*=*11=9GMN(=J(=?GG:02:=?G?:(?GJG=K01(=)NH(?09P3(=*H?%KLM(21?09NH(?09:(0?N90(HJG=M012M?:GKPKeywordsFJ*19?0G1(HNGH)M=+IG1KKN=M(11?M(21?+=:GHG209(HI:(;0G*=+0179?0G1MG*HK4B84==================================================(1970-)2138821739732005-01-131[1]90%140[2],12005.No.92954221226KH5501RHEO-GRAPH2002,GOTTFERT15minφ1mm5mm,5:1φ20mm33.13240℃4240℃34PA3240℃4240℃/℃/rmin-1NdFeB1652302402402308012005.No.929543NdFeB,NdFeB[3]σ=A(J1,J2,J3)δ+B(J1,J2,J3)δ+C(J1,J2,J3)ε2(1)J1J2J33ABCJ1=0δ=01C(J2,J3)B(J2,J3)B(J2,J3)Ostwald-deWale1β=J2,J3=2Kγ·n-1C=0σ=τ=Kγ·n2στγ·Kn2240℃2τPA=166.4γ·0.673τNdFeB=39567.5γ·0.424/ls-111.5223.0457.6115.2230.45761152NdFeB/Pas11718.756854.863218.062263.891672.221120.14741.32PA/Pas564.24282.12112.8594.691.8782.0671.6733.23.2.1[4]∂ρ∂t+∂∂xi(ρvi)=0(5)ρDviDt=ρgi+▽σij6ρCVDTDt=-▽qi-T(∂p∂T)ρ(▽vi)+σijⓧ▽vi7567D/DtρviixiiσijgitCVTqipKn39567.50.42166.40.672240℃32005.No.9295445zrθ567∂ρ∂t+∂(ρvr)r∂r+∂(ρvθ)r∂θ+∂(ρvz)∂z=085rρ(∂vr∂t+vr∂vr∂r+vθr∂vr∂θ-vθ2r+vz∂vr∂z)=ρgr-∂p∂r+[1r∂∂r(rσrr)+1r∂σrθ∂θ-σθθr+∂σrz∂z]θρ(∂vθ∂t+vr∂vθ∂r+vθr∂vθ∂θ+vrvθr+vz∂vθ∂z)=ρgθ-1r∂p∂θ+[1r2∂∂r(r2σrθ)+1r∂σθθ∂θ+∂σθz∂z]zρ(∂vz∂t+vr∂vz∂r+vθr∂vz∂θ+vz∂vz∂z)=ρgz-∂p∂z+[1r∂∂r(rσrz)+1r∂σθz∂θ+∂σzz∂z]ρCV(∂T∂t+vr∂T∂x+vθr∂T∂θ+vz∂T∂z)=-[1r∂∂r(rqr)+1r∂qθ∂θ+∂qz∂z]-T(∂p∂T)ρ[1r∂∂r(rvr)+1r∂vθ∂θ+∂vz∂z]+[σrr∂vr∂r+σθθ1r(∂vθ∂θ+vr)+σzz∂vz∂z]+σrθ[r∂∂r(vθr)+1r∂vr∂θ]+σrz(∂vz∂r+∂vr∂z)+σθz(1r∂vz∂θ+∂vθ∂z)10TviσijtvθvrTviσijθz8910∂p∂z-[1r∂∂r(rσrz)]=0111r∂∂r(rqr)-σrz∂vz∂r=012qr=-λ∂T∂rλr=Rvz=0T=TRr=0∂vz∂r=γ·rz=0∂T∂r=021112vz=(n1+n)(12K)1n(∂p∂z)1nR1+nn[1-(rR)1+nn]13qv=2∫πR0vzrdr=π(12K)1n(∂p∂z)1n(n3n+1)R3n+1n14LΔp=2KL(3n+1πnqv)nR-(3n+1)1541Vzmax=0.01m/s0.008mKn43.2.2466/ms-10.010.01/m0.0080.008/Pam-11.49×1052.69×1072005.No.92954511ΔPBE=ΔPBCF=ΔPBC+ΔPCF(16)11[5]qBE=qCF=q/6(17)qBC=2q/3(18)910LBER-(3n+1)BE=4nLBCR-(3n+1)BC+LCFR-(3n+1)CF1919nRBCRBERCFn1562BGV(BalancedGateValue)[6]BGV=SGLﾍR×LG(20)SGLGLR2Ttr10ρCV∂T∂t=λ1r∂∂r(r∂T∂r)21r=RT(R,t)=TWr=0∂T∂t(0,t)=0t=0T(r,0)=T0[7]t=169π2λR2ρCVln[5.13πT0-TWTC-TW](22)TCTW41,23461.2.3.2005.No.92954626603322TG315.2B1001-2168(2005)09-0046-03DesignoftheClosedPrecisionForgingDieforSpiralBevelGearTIANFu’()*+,-.)+,/*010234567+)68+)95:;)43.)+,/*0=7*+/0+,??@AAB7)+*CAbstractA+5D;4:u64u:50E475620;5/F:56);)0+E0:,)+,/)5E0:;F):*2G5952,5*:D*;)+4:0/u65/HF20*4)+,6*9)43/)5*+/E20*4)+,60:5I567*+);ID5:5*/0F45/HT75E0:,5F)565D*;E0:I5/)+*620;5/6*9)4360+;4:u645/G34D06*9)43/)5;*+/4D0/)560:5;*+/+0Gu::;)+475F:0/u64D*;6:5*45/HT75F:065;;5(F5:)I5+4;70D;47*4D)47475+5D/)5475E0:,)+,/5E0:I)+,E0:6547560;40EI*45:)*2*+/F:0/u64)0+6*+G559)/5+423/56:5*;5/HJ7)254750F5:*4)+,2)E50E475/)5*+/475F:0/u64)0+5EE)6)5+63);)+6:5*;5/HKeyword;F):*2G5952,5*:K620;5/F:56);)0+/)5E0:,)+,KE20*4)+,6*9)43/)5KE20*4)+,/)560:511→→→→[e-mail]==================================================2004-09-21[1]JohnOrmerod.BondedpermanentmagnetsCurrentsta-tusandfutureopportunities[J].JAppl.Phys,199781184819～4820.[2]Mikellknights.Micromouldmakemicroparts[EB/OL].http[3]AgassantJF,AvenasP.Polymerprocessing-principlesandModelling[J].MunichHanserpublishers,1991.[4].[M].2003.[5]StanleyMiddleman.FundamentalsofPolymerProcessing[J].NewYorkMograw-hillBookCompany1976.[6].[M].2000.[7].CAD/CAM/CAE[M].2000.