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ID:33015349
大小:3.64 MB
页数:80页
时间:2019-02-19
《自由曲面结构网格生成-研究与实现》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、浙江大学硕士学位论文Abstractefficientandtoourminds,thismethodcanbeeasilyintegratedinfiniteelementanalysispackagesorusedindependentlyasapreparatorystageforprogramsofcomputermapping.Thekeyelementofthepresentedmethodistheportrayingofprincipalstresstrajectoriesandthengridgenera
2、tionintheaidofthesecurvesusingamodifiedadvancefrontmethod.Contrastingtotraditionaladvancingfrontmethod,thealgorithminthissectionbeginswithinitialpointcalculationandthendiscretizesstresstrajectorycurvesandboundarycurvesofsurfacegeometrytoformthestartingfront.Thentr
3、ianglesorquadrilateralsaregeneratedbasedonthefrontsegmentsandgrowtowardstheinteriorofthedomain.Severalspecialaspectsofthemodifiedgridgenerationprocesswillbedemonstratedaswellasthecomparisons.Afterseveralpost-processingandtopologyoptimization,thegridresultgeometryd
4、emonstratesthequalityofgivingsatisfactionsufficienttOmeettherequirementsforaesthetic,economicandgoodstructuralperformance.Severalexamplesaregiventoillustratetheefficientandrobustofthemethodonvariouskindsofsurfaces,includingsimpleandcombinedflee.formsurfaces.Theabo
5、vedescribedgridgenerationschemeisefficientandhasbeenimplementedinOpenCASCADEthroughaninterfacetothefiniteelementprogramANSYS.Procedureforplottingstresstrajectoriesandgddgenerationhasbeendeveloped.Experimentshaveshownthat,formostcases,theprogramisrobustandeffective
6、tOsolvethecomplexfree-formsurfaceshellstructuredesign.Attheendofthispaper,asummaryismadewithsomedetailsfortheextensionofthepresentstudy.Keywords:Freesurface;grid;advancingfrontmethod;finiteelement;stresstrajectories;datastructure;OpenCASCADE;IV浙江大学硕士学位论文目录目录致谢⋯⋯⋯⋯
7、⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯I摘要⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯。IIABSTRACT⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯.III目录⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯IV第一章绪论⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯11.1引言⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯11.2自由曲面
8、结构的发展与现状⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯.21.2.1自由曲面形态学的发展⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯..21.2.2自由曲面造型技术⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯51.2.3自由曲面结构设计的一般流程⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯。61.3选题的目的和意
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