鋼筒倉設(shè)計研究及散料壓力的數(shù)值模擬.pdf

1、浙江大學(xué)建筑工程學(xué)院碩士學(xué)位論文鋼筒倉設(shè)計研究及散料壓力的數(shù)值模擬姓名：楊代恒申請學(xué)位級別：碩士專業(yè)：結(jié)構(gòu)工程指導(dǎo)教師：趙陽20080501AbstractThesteelsiloiswidelyusedforthestorageandtransportofvariousbulkmaterialsDuetothecomplicatedshellbehaviourthisstructureiSliabletobedamagedⅥ1hjle

2、inourcountrytheresearchofthesteelsiloiSterriblylackedandthecorrespondingcodecannotsatisfythepracticalapplicationInviewofthiscase，thesystemresearchontheload，strengthandvisualprogrammingofthecircularsteelsilohadbeencarried

3、outinthisthesisAlso，theresearchontheapplicationofnumericalsimulationtothebulkmaterialpressurewasconductedThesiloisusuallycomposedbythreeparts：silowall，hopperandtransitioniunctionThearticlesummarisedthecalculationalmethod

4、sofnormalpressure，tangentfrictionforceandmembranestressesactingonthesilowallandthehoppershellsunderthefillingordischargingThecomputationofcircumferentialcompressiveforceandstressesofintersectiontherelevantcompressivearea

5、swereintroducedtooThedifferencesbetweenOurnationalcodeandEuropeancodewerecomparedUndertheaxialcompressionandgeometricimperfectionthesilowalliSeasytobuckleThehugemeridionalmembranestressatthetopofthehoppercaneasilyleadtot

6、heruptureandplasticmechanismcollapseofthehopperatthecriticaljointsInthetransitionunderthetremendouscompressiveforce，theplasticfailureandbucklingiseasytohappenAccordingtoalloftheseultimatefailurestates，asystemsummaryabout

7、thecomputationsofthestrengthandstabilityofthethreepartsweremadeinthisarticleInordertoavoidthecomplexcomputationalprocessthearticlecompiledasteelsiloanalyticprogrammewithvisualprogramminglanguageVB60Theprogrammehassixmodu

8、les，includingparameterinput，loadanalysis，strengthanalysis，finiteelementinterfacepracticalapplicationandhelpfileTheloadcomputingandstrengthcapacityofthesilowall，hopperandtransitionjointsarefullfilledbytheprogramme，whichco

9、uldsupplytheANSYSAPDLfilesforthreekindssilo：conicalbottomsiloflatbottomsiloandcolonmsupportedsiloThelinearelasticanalysistheeigenvaluebucklinganalysisandthenonlinearbucklinganalysisconsideringthecircumferentialweldingdep

10、ressionsarefacilitatedbvthisprogrammeThebulkmaterialpressureiSthefoundationtodeterminetheloadsandstressesofsiloThefiniteelementanalysisonthestaticpressureoftheconicalbottomsiloandflatbottomsilowerecarriedoutbyusingDrucke

11、rPragermodelandfacetofacecontactelementonthebasisofareviewofthenumericalsimulationresearchprogressofthebulkpressureThentheparameteranalysiswaspresentedconsideringthePoissonration，frictioncoemcient，intemalfrictionangleand