大型厌氧反应器球顶壳稳定性分析杨鹏

200722-77-3q2q4q1q5qδρρδ/ρδ/1q2q3q4q5q1q0φN0θN⎪⎪⎭⎪⎪⎬⎫⎟⎟⎠⎞⎜⎜⎝⎛+−−=+−=φφρφρθφcos11coscos11010qNqNρ200722-78-1qφφ′ψφφφχφ′ρφ1/qNρθ1/qN2tan21φχ′=φ′⎪⎪⎭⎪⎪⎬⎫−=−=φρρθφ23131cos2121qNqN3q3q()22022022cos3161cos1coscosNHNHNφθφγρφρφγρρφφ⎫⎡⎤⎛⎞−=+−⎪⎢⎥⎜⎟⎪+⎝⎠⎬⎣⎦⎪=−+−−⎡⎤⎪⎣⎦⎭γγ0H33512NNqφθρ==5q)1(32222µρδ−=gEqEδqµµgEq2210ρδ=EφNθN200722-79-⎪⎭⎪⎬⎫++=++=++32103210θθθφθφφφφφNNNNNNNNNN⎪⎪⎪⎪⎪⎪⎭⎪⎪⎪⎪⎪⎪⎬⎫+==⎥⎥⎦⎤⎢⎢⎣⎡−=−′=−−−=⎥⎦⎤⎢⎣⎡−−−=−−)sin(cos)(cos)()1(3)]()1(1[2cot)(112214/122221xxexfxexfmmfqNmfmqNxxδρµφφψψµρφψµρθφq{}qmaxqφ′ρ1fρδ/=′=φφqqqq0φN1φN2φN3φNTφNq·q·ρρρρρ0θN1θN2θN3θNTθNqqρρρρρφρδ0φN1φN2φN3φNTφNq·q·ρρρρρ0θN1θN2θN3θNTθNqqρρρρρφρφ′ψq200722-80-ρδρδGlobalCopingofLarge-scaleAnaerobicDigesterStabilityAnalysisYANGPeng,QIULing,YUANJian-wei,WANGHui-sheng,WANGLan-ying(CollegeofMechanicalandElectronicEngineering,NorthwestSci-TechUniversityofAgricultureandForestry,Yangling712100,China)Abstract:Basedonofnonmomentaltheoryofaxialsymmetryrevolvingshell,itisdiscussedspeciallyontactic’sanalysisofglobalcopingoflarge-scaleanaerobicdigester.Theacademicbasisofstabilityanalysisisobtainedbyanalysisofinternalforcewhichloadsbringalongwithmeridianandwoofdirection.Theloadsincludemostlydeadweightload,grounduniformload,earthloadandbiogasuniformload.Thecalculationmethodofstabilityverifyingisobtainedbyconversionapproximatively.Thepracticabilityofmethodisvalidatedbyinstanceof100m3Globalcopingofanaerobicdigester.AnditoffersaconvenientandeffectualacademicmethodforthestabilityverifyingofGlobalcopingoflarge-scaleanaerobicdigester.Keywords:agriculturalengineering;anaerobicdigester;stabilityanalysis;globalcoping;revolvingshell;nonmomentaltheoryAbstractID:1003-188X(2007)02-0028-EAInternationalAgricultureSupportPoliciesandRevelationtoChinaFEIZhen-guo(CollegeofEconomyandManagement,NorthwestScienceandTechnologyUniversityforAgricultureandForest,Yangling712100,China)Abstract:Becauseagricultureisthefoundationindustryofnationandhascharacteristicsofweakandmultifunctional.Thewholesocietymustsupportagriculturewhennationdevelopmentcertainphase.InadditionsubsidyforagricultureisInternationalpractice.ThearticleintroducesthesupportpolicysystemsofagricultureU.S.AandEuropeanUnionandJapanandanalysesthevariationofthesupportpolicysystems.SetupChinesesupportpolicysystemsandpointspecificmeasureKeywords:agriculturaleconomy;agriculturesupportpolicy;summary;measure