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()1,2(11,100084;21,100029):,:;;;:O242121:A:1001-4837(2006)01-0015-05DiscussiononSomeImportantProblemsofDesignbyAnalysis(1)LUMing-wan1,XUHong2(11SchoolofAerospace,TsinghuaUniversity,Beijing100084,China;21CollegeofMechanicalEngineering,BeijingUniversityofChemicalTechnology,Beijing100029,China)Abstract:SayafewwordsaboutourunderstandingandsuggestionontheDesignbyAnalysis,includingthemodelingoffiniteelements,thestressclassificationofresultsbyfiniteelementmethodandtheequivalentlin2earizationmethodetc.Keywords:designbyanalysis;modelingoffiniteelements;stressclassification;equivalentlinearization2005(JB473295),,,,,1,(),,,,,,,,111,,11111,,/:,51;,:(),2;(),3Rt;,11112(1)1,,xz,xz(2)2,xz,xz11113112(1);(2),;(3),,(4)(48);(820),,,,,(5)(3)3(6)()(4)4()()(7),,,,--,,,,,,,100113(1),425(2)1/468(3)1113,157,110(4)30,154561CPVT()Vol23.No12006(a)(b)5(5)()34(6)2(7),,3%5%,(8),(9):,,(6)(10):,,,6:,,114()(1)(),,,()PeqPi,Peq=AiPi/F,Ai,F(2),,3;,,(7);,,(3)(4),(),(5),,(8)7,,8(6),,,71231158115()(1)(2)9,,(3),,(9)(4)9116(1)=--(2)/(3)/,,/(4),()117(1)(111116),(2),(,,,)(3)(,)(4)5,5(5)(),,ANSYS,title(6),2ASME-2JB473295,PmPLPbQF,,,,,,PmPL,P,:(1)FP+Q;(2)PQ:,,,,()2112070,[13],,,ANSYS,MSC-NASTRAN81CPVT()Vol23.No12006,ASME:,,,,[46],ASME:,,,,,ASME,,[4][5]:,,;,,,,(),,10,10,,10,:,(),(),(),(),,,,,,,,,,,,,(),,:,,,;,():2005-10-2991231158()1,2(11,100084;21,100029):,:;;;:O242121:A:1001-4837(2006)02-0028-05DiscussiononSomeImportantProblemsofDesignbyAnalysis(2)LUMing-wan1,XUHong2(11SchoolofAerospace,TsinghuaUniversity,Beijing100084,China;21CollegeofMechanicalEngineering,BeijingUniversityofChemicalTechnology,Beijing100029,China)Abstract:SayafewwordsaboutourunderstandingandsuggestionontheDesignbyAnalysis,includingthemodelingoffiniteelements,thestressclassificationofresultsbyfiniteelementmethodandtheequivalentlin2earizationmethodetc.Keywords:designbyanalysis;modelingoffiniteelements;stressclassification;equivalentlinearization212,FF+Q,,,21211,,,,,,,,,[5,6]:(1):1),,,;822),(2)ASME,,,:,,,1):,,2),,:11,COucuOvO,,zi:ui=(uO-uC)2zt;vi=(vO-vC)2zt(1),z,,:-t/2zt/2;t113),,,,,,(3):1),,,,,(,12,),12,2),,,,,,,3),,,,13,B,,A,,,,13MB=-18qa2;MA=3+16qa292232159(4),(1)(3),;,,,,APDL,ANSYS,,,,(),,,,:21212ASMEVIII-24-13613::,,,,:(1)P+Q+F;(2);(3);(4),:(1)ANSYS,,,2,,(,),,,3510,,,,(2),1414:1)ASME-214P22)()14PT,,3)[7]:(ABC,14)03CPVT()Vol23.No22006,,C()14PcPcPTABC,C,,,10-310-4(P2PT),--,,213PmPLPb,,,,,,,(),,,,()63,6?,,,214ANSYS6,6,,:(1),(2),(3),,15Q,x,z,zABBCCDDE(,z)(x,z)(x,)(z,),,(3),15(ABCDE)(),16,,:,1323215916,6,,,:(1),,,PL+PbP+Q(2)x-z,16,,,:(1)z,xz(z,),4(),,x,(2)(3)x,xz,,,PL+Pb,115Sm,,,3,,[8]ASME,,,JB-4732-95,:[1]Kroenke,WC,ClassificationofFiniteElementStressesAc2cordingtoASMESectionIIIStressCategories,PressureVes2selsandPiping[J].AnalysisandComputers,NewYork,NY,19741[2]Kroenke,WC,Addicott,GW,andHinton,BM,Inter2pretationofFiniteElementStressesAccordingtoASMESec2tion[J].ASMEPaper75-PVP-Vol.63,1975.[3]Kroenke,WC,etal.ComponentEvaluationUsingtheFiniteElementMethod[J].PressureVesselsandPipingTechnology-1985-ADecadeofProgress,ASME,1985.[4].[J].,2005.[5]M.W.Lu,Y.Chen,J.G.Li.Two-stepApproachofStressClassificationandPrimaryStructureMethod[J].J.PressureVesselTechnology,2000,122(1):2-8.[6],,.[J].,1998,19(4):330-337.[7],,.[J].,1989,(2):152-160.[8].[J].,2005,22(08):21-26.:2005-10-12:,,,,23CPVT()Vol23.No22006