1Example11Title2-DplanetrussDescriptionDeterminetheverticaldisplacementsofaplanetrussstructuresubjectedtoconcentratedloads.Structuralgeometryandanalysismodel2ModelAnalysisType2-Dstaticanalysis(X-Zplane)UnitSystemin,kipDimensionLength720inHeight180inElementTrussElementMaterialModulusofelasticityE=30×103ksiSectionPropertyAreaA=1.0in2(Elements~)=2.0in2(Elementsand)=1.5in2(Elementsand)=3.0in2(Elements~)=4.0in2(Elementsand)BoundaryConditionNode1;ConstrainDxandDz.(Hingesupport)Node3;ConstrainDz(Rollersupport)LoadCaseAconcentratedload,20kipseachisappliedtothenodes2,4and5inthe-Zdirection.Example113ResultsDisplacementsofthestructureComparisonofResultsUnit:inNode5TheoreticalSTAAD-IIIMIDAS/GenMaximumverticaldeflection(δZ)-2.63-2.63-2.63ReferencesJackC.Mccomack,“StructuralAnalysis”,p.271,Example18-2.“STAAD-III/ISDS,GettingStartedandExampleManual”,ResearchEngineers,Inc.,1994,VerificationProblemNo.7.
