连续驱动摩擦焊摩擦界面稳态扭矩微观分布的研究

MicroDistributionofSteadyTorqueonFrictionInterfaceofContinuousDriveFrictionWelding[],,,:[ABSTRACT]Accordingtotheprincipleofpressworkingandtribologyandthecharacteristicsoffrictionheat2ingprocessofcontinuousdrivefrictionwelding,thesteadytorquedistributionruleonthefrictioninterfaceintheinitialfrictionstageofthecontinuousdrivefrictionweldingisstud2ied.Thecharacteristicsofsteadytorquedistributioninthestagesofthetransientandsteadyfrictionarediscussed.Keywords:FrictionweldingFrictioninterfaceFrictiontorqueDistribution,,,,,,,,,1,:M(r)=2(r)p(r)r2(1):M(r);(r);p(r);r(1),,111,2R,h,rdr,,11Fig.1Forcediagramofthejointinfrictionwelding,,6220004(+d)2rh-2rh-2F=02rhd-2F=0(2):F();,,F=2rpdr(3):,p(2),(3)hd=2pdr(4),,,p-=00dpddp=d(5)(5)(4),dpp=2h+R-Rdrp=Cexp(2rh)(6):C,r=R,p=0,(6),C=0exp2h(ºR),(6)p=0exp2h(Rr)(7)2h(Rr)1,exp2h(Rr)1+2h(Rr)(8)(8)(7)p(r)=0[1+2h(Rr)](9)p(r)(r=0),p(0)=pmax(9)p(r)p(r)=pmax(1º2rh+2R)(rR),p(R)p(R)=pmaxhh+2R(10),700800,,0.30.5,0.5,(h/R)0.51.5,0.5(10)p(R)=13pmaxp(r)=13pmax(r=R)p(r)=pmax(r=0),p(r)=pmax(1-2r3R)(0rR)(11)112,,,r,(r)=kr(0rR)(12):k,(1),(11),(12)M(r)=K0(3Rr3-2r4)(0rR):M(r),K0M(r)22Fig.2Torquedistributiondiagramintheinitialfrictionstage2,016RR,70%,1/31/22,(45)72,,,,,,0.7mm,,75%,,Ra0.8m4,,:(1)0.5mm(2)()(),0.2mm,0.15mm,(3),75%,Ra0.8m,5,:(1),S-240,,,,,,,,,(2),,,,,(3),,,()(27),,,,,,,,(1),,,,M(r)33Fig.3Steadytorquedistributiondiagraminthetransientfrictionstage3,,,;,,,,,,,M(r)44Fig.4Torquedistributiondiagraminthesteadyfrictionstage()54