复杂产品的可装配性评价技术研究

沈阳理工大学硕士学位论文复杂产品的可装配性评价技术研究姓名：徐璐申请学位级别：硕士专业：机械设计及理论指导教师：舒启林20090301~~AbstractAssemblyaccountsfor20%-70%ofmanufacturingcostsand40%-60%ofmanu-facturingtimeinthemodernmanufacturingindustry.Basedonthesituationoffiercecompetitionamongenterprisesintheglobalmarket,“DesignForAssembly”waspresentedinordertodevelopnewproductsandrespondmarketrapidly.AssemblabilityevaluationasanimportantpartofDFAdidfullytakeintoaccountofassemblyintheupperreachesofthedesignstage,avoidedthedesignmistakesintheupperreacheswhichleadtolongproductdevelopmentcyclesandhighdevelopmentcosts.Onthebasisofanalyzingfactorsthataffecttheassemblabilityofproducts,afuzzyevaluationmodelforevaluatingtheassemblabilityofproductswaspresentedbyusingthemethodof“FuzzyComprehensiveEvaluation+AnalyticHierarchyProcess”.Theassemblabilityevaluationsystembothatthelevelofpartsandproductswereimplemented,whichprovidedesignersafriendlyandeasy-usedesigningenvironmentandtools.Therefore,theonlinedesigningsystemcanberealizedandtheprocessofproductdesigncanbeguidedtowardgoodforassemblyfromthebeginningofproductdesign.Basedonaboveresearches,weestablishedaCAD-DFAintegratedsystemenvironment,inwhichdesignerscananalyzeandevaluatetheperformanceofassembly,detectinterferencesamongpartsandsimulateassemblyprocess.TheresultofassemblabilityevaluationcanbereturnedtoCADsysteminordertoredesigntheproduct.Keywordsassemblabilityevaluation;fuzzycomprehensiveevaluation;assemblymodeling;complexstructureproduct;evaluationsystem12345+6789ab10111213141516~~lll1718XYfXxYyfXY:fXY→Xf19{}()()|fXfxxX=∈f()fXY⊆yxfxyAU():0,1AxU→1,()0,AxAxxxA∈⎧=⎨∉⎩AxAUA%uU∈[]()0,1Aum∈%()Aum%uA%[]:0,1AUm→%()Auum|→%A%()Aum%uA%()Aum%uA%()Aum%uA%U()12,,...,nuuu1212()()()...AAAnnuuuAuuummm=+++%%%%()Aiiuum%iu()Aium%U20()()(){}1122(,,(,,...,(,AAnAnAuuuuuummm=%%%%{}12,,...,AAAnAuuummm=%%%%UAUuAum=∫%%()Auum%u()Aum%∫Uu()Aum%211212211()0xaaxuxaxaaaxa2⎧≤⎪-⎪=≤⎨-⎪⎪⎩1112212()1xaxauxaxaaaxa⎧00≤≤⎪-⎪=≤⎨-⎪⎪⎩121221234344340()10xaxaaxaaauxaxaaxaxaaaxa≤⎧⎪-⎪≤-⎪⎪=≤⎨⎪-⎪≤-⎪⎪⎩1a1a2a2ax3a()ux4ax()ux()1()vxux=-x22()ux()vxU21,,...,nAAA%%%Un0uU∈()()()()()120000max,,...,inAAAAuuuummmm=%%%%0uiA%A%U12,,...,nuuuUn()()()()()1212max,,...,inAiAAAnuuuummmm=%%%%0uA%12,,...,nAAA%%%Un[]0,1l∈0uU∈()()()()12000max,,...,nAAAuuummml%%%()()()()12000max,,...,nAAAuuummml≥%%%k()()()12000,,...,iiikAAAuuummm%%%%%%l0u2312...iiikAAA%%%III()()()()12000max,,...,nAAAuuummml%%%()()()()12000max,,...,nAAAuuummml≥%%%0u()()()()()120000max,,...,inAAAAuuuummmml=≥%%%%0uiA%0uiA%2425XAXA()AXx0()1AxAXxxA∈⎧=⎨∉⎩{}0,126[]0,1U{}12,,...,nUuuu=V{}12,,...,mVvvv=UV1,11,21,12,12,22,2,1,2,.........mmnnnnmrrrRrrrRRRrrr...⎡⎤⎡⎤⎢⎥⎢⎥⎢⎥⎢⎥==⎢⎥⎢⎥⎢⎥⎢⎥⎢⎥⎣⎦⎣⎦%%%MMMM%iuiw()12,,...,n=%11niiiww==≥0∑27()()1,11,21,2,12,22,12,1,2,12......,,...,......,,...,mmnnnnmmBWRrrrrrrrrrbbb=⎡⎤⎢⎥⎢⎥=⎢⎥⎢⎥⎢⎥⎣⎦=o%%%oMMMW%W%o(1,2,...,)jbjm='4(),M+g11,2,...,njiijibrjmw===∑11niiw==∑iwijriw'41,2,...,)jbjm(=jbjv28U{}12,,...,nUuuu={}12,,...,mVvvv=UN{}12,,...,NUUUU={}()12,,...,1,2,...,iiiimiUuuuiN==iUim1NiiUU==∑1NiiUU==UijUUijf=≠I{}12,,...,iiiimiUuuu=im1,2,...,iiiBWRiN==o%%%iW%iU()12,,...,iiiimi=%iR%iUUR%29111222......NNNBWRBWRRBWR⎡⎤⎡⎤⎢⎥⎢⎥⎢⎥⎢⎥==⎢⎥⎢⎥⎢⎥⎢⎥⎣⎦⎣⎦o%%%o%%%%o%%%()12,,...,N=%BWR=o%%U3031iC(1,2,...,)ik=n1u2ununnW×iuju⎡⎤⎢⎥⎢⎥⎢⎥⎢⎥⎢⎥⎢⎥⎣⎦13579ijw⎡⎤⎢⎥⎢⎥⎢⎥=⎢⎥⎢⎥⎢⎥⎣⎦321jiijww=maxlwmaxcwlw=wmaxliw(1,2,...,)in=iC(1,2,...,)in=ARICIRICRCICR()()max1CInnl=--CImaxlnCRCIRI=CRCIRICR0CI=maxnl-CIRI33A()1,2,...,iAim=()1,2,...,iaim=B()1,2,...,jBjn=AiA1ib2ibnibiAjB0jib=BA1,(1,2,...,)imjjiiabjnw===∑11niiiniiiCCICICRRICRI====∑∑CRCIRIiCiCIB1nijijjub==∏nniijuu=Wi1iiniiuWu==∑34max1()niiiAWnWl==∑35,36{}12,,...,jUuuu=iu37=1,2,....,10)iui(1u2u3u4u5u6u7u8u9u10u{}12,,...,jVvvv=[]01[]0.9,1[)0.8,0.9[)0.7,0.8[)0.6,0.7[)0.5,0.6[)0.4,0.5[)0,0.4aa38abiiujjv,ijriiu,,,77i1i2ii12rrrR=++......+vvv%iR%,1,2,7(,,......,)iiiiRrrr=%VnVVR4V391uV134567000100012R=++++++vvvvvvv%1(0,0,0,1,0,0,0)R=%1,11,21,712,12,22,721010,110,210,7.........rrrRrrrRRRrrr...⎡⎤⎡⎤⎢⎥⎢⎥⎢⎥⎢⎥==⎢⎥⎢⎥⎢⎥⎢⎥⎢⎥⎣⎦⎣⎦%%%MMMM%R%R%,ijriuiviuiviuiw()12,,...,n=%iwiuiw1011iiiww==,≥0∑R%R%ii40R%jjW%R%()()1,11,21,72,12,22,7121012710,110,210,7......,,...,,,...,......rrrrrrBWRbbbrrr⎡⎤⎢⎥⎢⎥===⎢⎥⎢⎥⎢⎥⎣⎦oo%%%MMMoB%jb(7j=1,2,...,)jbjV'410,11,2,...,7jiijibrjw===∑B%B%71'jjjjbbb==∑jbj'jbj41nn1n11'''njjibbn==∑n''jb10.642n1n-4344U{}12,,...,iUuuu=iuiu1,...,18i=451u2u3u4u5u6u7u8u9u10u11u12u13u14u15u16u17u18u{}127,,...,Vvvv=4647iiujjv,ijriiu,,,77i1i2ii12rrrR=++......+vvv%R%,1,2,7(,,......,)iiiiRrrr=%m3u312345670010000mRvvvvvvv=++++++%3(0,0,1,0,0,0,0)mR=%mm1,11,21,712,12,22,721818,118,218,7............mmmmmmmmmmmmmrrrRrrrRRRrrr⎡⎤⎡⎤⎢⎥⎢⎥⎢⎥⎢⎥==⎢⎥⎢⎥⎢⎥⎢⎥⎢⎥⎢⎥⎣⎦⎣⎦%%%MMMM%m1mn=-nmR%mmR%,ijriuiv48iuivmR%UViuiw()12,,...,n=%iwiuiw1811iiiww==,≥0∑mR%mR%iimmR%jmjW%mR%()()1,11,21,72,12,22,7121812718,118,218,7......,,...,,,...,......mmmmmmmmmmmmmrrrrrrBWRbbbrrr⎡⎤⎢⎥⎢⎥===⎢⎥⎢⎥⎢⎥⎣⎦oo%%%MMM49omB%mmjbm(7j=1,2,...,)jb18,11,2,...,7mmjiijibrjw===∑mmB%mB%711,2,...,7jjmiibbjb=′==∑jb111,2,...,71nmjjmbbjn=′==-∑50njb'''111,2,...,7njjnbbjn=′==∑'njb′515253545556→57→5859CAD601a2a3a4aab61626364656667686970717273747576777879复杂产品的可装配性评价技术研究作者：徐璐学位授予