Solidworks有限元分析教程.ppt

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1、有限元分析用户培训Jim.YueDDSSoftwareCo.1目录企业需求与有限元分析DesignAnalysis更少的样机：省钱更短的周期：省时更好的质量：品质有限元分析的主要步骤前处理建立分析对象的有限元模型求解对有限元模型的计算工况进行求解后处理观察分析结果，评估设计是否符合要求Cosmos/Works有限元分析的步骤建立几何模型定义材料属性定义边界条件(约束和载荷)划分网格求解查看和评估结果修改,重新,细化Cosmos/Works的用户界面Cosmos/Works的工具条定义、修改、删除专题定义材料生成有限元网格对当前专题进行计算在几何模型/有限元模型之间进行切换显

2、示从所选的特征中选择面元Cosmos/Works的选项对话框Cosmos/Works线性静力分析例1.支座分析例2.轴承载荷例3.壳单元，静水压例4.Motion，远端载荷线性静力分析：定义专题Displacementintheradialdirection:Select“Axis1”andthendefinedisplacementplotinX-direction(radialtotheaxis).Selectdeformationscale=1Right-clickonthedisplacementploticon“plot2”andthenselect”Listse

3、lected”Averagedisplacementof“polepiecelower”=-0.0019504”(decreaseinradius)Averagedisplacementof“polepieceupper”=0.007896“(increaseinradius)Sumofthese2displacement=0.009846”~Initialinterfernceof0.01”HoopStress(tangential):Select“Axis1”andthendefinestressplotinY-direction(radialtotheaxis).Se

4、lectdeformationscale=1Right-clickonthestressploticon“plot2”andthenselect”Listselected”Negativestresson“polepiecelower”(compression)Positivestresson“polepieceupper”(tension)线性静力分析：定义材料属性SimulatepartswhichareseparatedbylargegapsFirstrunthemodelwithsmalldisplacementoptionandlookattheresultsIf

5、youseethatthereisachangeintheorientationofthecontactsurfacesduringloadingoriftheresultsdoesn’tlookrealistic,uselargedeflectionoptionExample1Example2线性静力分析：网格划分Open“RectangleGap.sldasm”Defineastaticstudy“smallcontact”Applymaterial“Alloysteel”tobothpartsApplyapressureof725psionthetopfaceSele

6、ctthetwofrontfacesandthenapplyrestraint.SelectFlatfaceoptionandthenselect“Normaltoface”Fixtheleftsemi-circularfaceHidetheloads/bcsymbolsDefine“Surface”contactbetweenthetopfaceofthebottomlegandtheperpendicularfaceCreatemeshandrunDefineastressplotwithscalefactor=1.Lookatthecontactsurface.Thi

7、sproblemrequireslargedisplacementnonlinearcontact!!!线性静力分析：定义约束Defineanewstaticstudy“LargeDisp”Drag’ndropthematerialandloads/bcfoldersfrom“smallcontact”studyRight-clickonthestudynameandclickonproperties.Select“Largedisplacementcontact”option.RuntheanalysisDefi