ANSYS有限元分析课程论文

./题目：如图所示是一飞轮的截面图。飞轮材料的弹性模量210GPa,泊松比0.27,密度7800kg/m3。飞轮的角速度为62.8rad/s,飞轮边缘受到压力作用,压力p为1MPa,飞轮轴孔固定。试对飞轮进行静力分析并绘制飞轮在柱坐标系下径向、环向的应力和变形云图。主要步骤：用户自定义文件夹,以为文件名xiti开始一个新的分析。定义单元类型〔1选择MainMenu>Preprocessor>ElementType>Add/Edit/Delete>Add>select：selectSolidQuad8node82>OK<backtoElementTypeswindow>〔2设置SolidQuad8node82的Options选项,Options…>seleltK3:Axisymmetric>Close<theElementTypewindow>,如图1所示。图1单元属性设置对话框定义材料性能参数定义材料的弹性模量和泊松比MainMenu:Preprocessor>MaterialProps>MaterialModels>Structural>Linear>Elastic>Isotropic>inputEX:2.10e5,PRXY:0.27>OK定义材料的密度MainMenu:Preprocessor>MaterialProps>MaterialModels>Favorite>LinearStatic>Density>inputDENS:0.0078>OK建立几何模型、划分网格生成特征点MainMenu>Preprocessor>Modeling>Create>Keypoints>InActiveCS>依次输入点的坐标：input:1<50,0>,2<55,0>,3<55,16>,4<75,16>,5<75,5>,6<80,5>,7<80,40>,8<75,40>,9<75,24>,10<55,24>,11<55,50>,12<50,50>连接各特征点MainMenu>Preprocessor>Modeling>Create>Lines>Lines>StraightLine>依次连接各特征点：1<50,0>,2<55,0>,3<55,16>,4<75,16>,5<75,5>,6<80,5>,7<80,40>,8<75,40>,9<75,24>,10<55,24>,11<55,50>,12<50,50>生成过度圆弧MainMenu>Preprocessor>Modeling>Create>Lines>LineFillet>选择需要产生过度圆弧的两边,输入过度圆弧的半径>OK如图2所示。图2飞轮截面形状生成飞轮截面MainMenu>Preprocessor>Modeling>Create>Areas>Arbitrary>Bylines>依次选择各条线>OK如图3所示。图3飞轮截面模型网格划分MainMenu>Preprocessor>Meshing>MeshTool>〔SizeControls>Global:Set>inputSIZE:1>OKMeshTool>Mesh:selectAreas>Shape:Quad>Free>Mesh>PickAll>Close<theMeshToolwindow>如图4所示。图4飞轮网格划分模型模型约束加载对飞轮边施加位移约束MainMenu>Solution>DefineLoads>Apply>Structural>Displacement>OnLines>拾取左边>OK>selectLab2:ALLDOF>OK对飞轮边施加载荷MainMenu>Solution>DefineLoads>Apply>Structural>Pressure>OnLines>选择图示的三条边>如下图5输入>OK图5飞轮边施加载荷施加角速度ANSYSMainMenu:Solution>DefineLoads>Apply>Structural>Inertia>Angularveloc>Globel弹出施加角速度的对话框,如图6输入图6施加角速度分析计算MainMenu>Solution>Solve>CurrentLS>OK<toclosethesolveCurrentLoadStepwindow>>OK后处理改变观察结果输出坐标系MainMenu:GeneralPostproc>OptionsforOutput>出现结果坐标系设置对话对话框,设置为柱坐标系,如图7所示。图7改变观察坐标系三维扩展UtilityMenu>PlotCtrls>Style>SymmetryExpansion>2DAxis-Symmertric弹出轴对称扩展设置对话框,选择Fullexpansion单击OK结果显示径向应力云图MainMenu>GeneralPostproc>PlotResults>ContourPlot>NodalSolu>select:DOFsolution,X-Componentofdisplacement>OK图8平面径向应力云图图9三维径向应力云图环向向应力云图MainMenu:>GeneralPostproc>PlotResults>ContourPlot>NodalSolu>select:DOFsolution,Y-Componentofdispla