Overhead Hoist Example

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1、EXAMPLE:CREATINGAMODELOFANOVERHEADHOISTWITHABAQUS/CAETheinstructionsfortheexamplesdiscussedinthismanualwillfocusonusingtheModelTreetoaccessthefunctionalityofABAQUS/CAE.Menubaractionswillbeconsideredonlywhennecessary(e.g.,whencreatingafiniteelementmeshorpostprocessingresults).2.3Example:creatingamode

2、lofanoverheadhoistwithABAQUS/CAEThisexampleofanoverheadhoist,showninFigure2–5,leadsyouthroughtheABAQUS/CAEmodelingprocessbyusingtheModelTreeandshowingyouthebasicstepsusedtocreateandanalyzeasimplemodel.Thehoistisasimple,pin-jointedframeworkthatisconstrainedattheleftendandmountedonrollersattherighten

3、d.Thememberscanrotatefreelyatthejoints.Theframeispreventedfrommovingoutofplane.AsimulationisfirstperformedinABAQUS/Standardtodeterminethestructure’sstaticdeflectionandthepeakstressinitsmemberswhena10kNloadisappliedasshowninFigure2–5.ThesimulationisperformedasecondtimeinABAQUS/Explicitundertheassumpti

4、onthattheloadisappliedsuddenlytostudythedynamicresponseoftheframe.1mAllmembersare1m1mcircularsteelrods,5mmindiameter.1m1m10,000NMaterialpropertiesGeneralproperties:3r=7800kg/mElasticproperties:9E=20010´Pan=0.3Figure25Schematicofanoverheadhoist.2–12EXAMPLE:CREATINGAMODELOFAN

5、OVERHEADHOISTWITHABAQUS/CAEFortheoverheadhoistexample,youwillperformthefollowingtasks:•Sketchthetwo-dimensionalgeometryandcreateapartrepresentingtheframe.•Definethematerialpropertiesandsectionpropertiesoftheframe.•Assemblethemodel.•Configuretheanalysisprocedureandoutputrequests.•Applyloadsandboundary

6、conditionstotheframe.•Meshtheframe.•Createajobandsubmititforanalysis.•Viewtheresultsoftheanalysis.APythonscriptforthisexampleisprovidedin“Overheadhoistframe,”SectionA.1,intheonlineversionofthismanual.WhenthisscriptisruninABAQUS/CAE,itcreatesthecompleteanalysismodelforthisproblem.Runthescriptifyouen

7、counterdifficultiesfollowingtheinstructionsgivenbeloworifyouwishtocheckyourwork.InstructionsonhowtofetchandrunthescriptaregiveninAppendixA,“ExampleFiles.”Asnotedearlier,itisassumedthatyouwillbeusingABAQUS/CA