ws15b-1研讨会使用带有tet10元素粗网格对调整叉模态分析培训nastran.pdfVIP

WORKSHOP15B

MODALANALYSISOFTUNINGFORK

USINGCOARSEMESHWITHTET10

ELEMENTS

NAS122,Workshop15b,August2005

Copyright©2005MSC.SoftwareCorporationWS15b-1

MODALANALYSISOFATUNINGFORK

ProblemDescription

Thepurposeofthisworkshopistocomparetheresultsofthe

NormalModesanalysisbetweenacoarsemeshedmodelanda

finemeshedmodel.TheuserwillcontinuewithWorkshop15aby

re-meshingthemodelusingaGlobalEdgeLengthof0.5,andthen

themodelwillbesubmittedtoMSC.NastranforaNormalModes

analysis.

MODALANALYSISOFATUNINGFORK

SuggestedExerciseSteps

1.OpenthedatabasecreatedinWorkshop15a.

2.Deletethefiniteelementsthatareonthemodel.

3.MeshthemodelwithTET10elementsanduse0.5fortheGlobal

EdgeLength.

4.SubmitthemodeltoNastranforaNormalModesanalysis.

5.AttachtheXDBresultfileaftertheanalysisiscompleted.

6.UsetheDeformationfeatureintheResultMenutovisualizethe

Eigenvectorofthemodel.

Step1.File/Open

a

b

Openthedatabasecreatedin

Workshop15a.c

a.File/Open.

b.Selecttuningfork.dbasthe

filename.

c.ClickOK.

Step2.Elements:Delete/Any

Deletethefiniteelementsgenerated

before.a

a.Elements:Delete/Any.

b.Usetherectangularpicking

optiontopickalltheelements.

c.ClickApply.