abaqus中定义弹簧单元

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1、ABAQUS中定义弹簧单元2011-12-1617:57AbaqusAnalysisUser'sManual 29.1.1 SpringsProducts:Abaqus/Standard  Abaqus/Explicit  Abaqus/CAE  References···OverviewSpringelements:·cancoupleaforcewitharelativedisplacement;·inAbaqus/Standard cancoupleamomentwitharelativerotation;·canbelinearornonlinear;·iflinear,canbede

2、pendentonfrequencyindirect-solutionsteady-statedynamicanalysis;·canbedependentontemperatureandfieldvariables;and·canbeusedtoassignastructuraldampingfactortoformtheimaginarypartofspringstiffness.Theterms“force”and“displacement”areusedthroughoutthedescriptionofspringelements.Whenthespringisassociatedw

3、ithdisplacementdegreesoffreedom,thesevariablesaretheforceandrelativedisplacementinthespring.Ifthespringsareassociatedwithrotationaldegreesoffreedom,theyaretorsionalsprings;thesevariableswillthenbethemomenttransmittedbythespringandtherelativerotationacrossthespring.Viscoelasticspringbehaviorcanbemode

4、ledinAbaqus/Standard bycombiningfrequency-dependentspringsandfrequency-dependentdashpots.TypicalapplicationsSpringelementsareusedtomodelactualphysicalspringsaswellasidealizationsofaxialortorsionalcomponents.Theycanalsomodelrestraintstopreventrigidbodymotion.Theyarealsousedtorepresentstructuraldamper

5、sbyspecifyingstructuraldampingfactorstoformtheimaginarypartofthespringstiffness.ChoosinganappropriateelementSPRING1andSPRING2elementsareavailableonlyinAbaqus/Standard.SPRING1isbetweenanodeandground,actinginafixeddirection.SPRING2isbetweentwonodes,actinginafixeddirection.TheSPRINGAelementisavailablei

6、nbothAbaqus/StandardandAbaqus/Explicit.SPRINGAactsbetweentwonodes,withitslineofactionbeingthelinejoiningthetwonodes,sothatthislineofactioncanrotateinlarge-displacementanalysis.ThespringbehaviorcanbelinearornonlinearinanyofthespringelementsinAbaqus.ElementtypesSPRING1andSPRING2canbeassociatedwithdisp

7、lacementorrotationaldegreesoffreedom(inthelattercase,astorsionalsprings).However,theuseoftorsionalspringsinlarge-displacementanalysisrequirescarefulconsiderationofthedefinitionoftotalrotationatanode;t