ANSYS静力分析实例2.docx
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ANSYS静力分析实例2.docx
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ANSYS静力分析实例2
结构分析实验指导书
1.问题描述:
这是一个关于角支架的单载荷步的结构静力分析。
如图所示,左上角的销孔由于焊接而被固定死。
右下角的销孔上作用一分布力。
本问题的目标是熟悉ANSYS分析的基本过程。
使用的是美国的单位体系。
材料的杨氏模量为30E6psi,泊松比0.27。
2.几何建模:
第一步:
定义矩形
1.MainMenu>Preprocessor>Modeling>Create>Areas>Rectangle>ByDimensions
2.Enterthefollowing:
X1=0,X2=6,Y1=-1,Y2=1
3.Applytocreatethefirstrectangle.
4.Enterthefollowing:
X1=4,X2=6,Y1=-1,Y2=-3
5.OKtocreatethesecondrectangleandclosethedialogbox.
第二步:
更改绘图属性和重绘。
1.UtilityMenu>PlotCtrls>Numbering
2.Turnonareanumbers.
3.OKtochangecontrols,closethedialogbox,andreplot.
4.Toolbar:
SAVE_DB.
第三步:
更改工作平面为极坐标系并创建第一个圆
1.UtilityMenu>WorkPlane>DisplayWorkingPlane(toggleon)
2.UtilityMenu>WorkPlane>WPSettings
3.ClickonPolar.
4.ClickonGridandTriad.
5.Enter0.1forsnapincrement.
6.OKtodefinesettingsandclosethedialogbox.
7.MainMenu>Preprocessor>Modeling>Create>Areas>Circle>SolidCircle
8.Pickcenterpointat:
WPX=0,WPY=0
9.Movemousetoradiusof1andclickleftbuttontocreatecircle.
10.OKtoclosepickingmenu.
11.Toolbar:
SAVE_DB.
第四步:
移动工作平面并创建第二个圆
1.UtilityMenu>WorkPlane>OffsetWPto>Keypoints
2.Pickkeypointatlowerleftcornerofrectangle.
3.Pickkeypointatlowerrightofrectangle.
4.OKtoclosepickingmenu.
5.MainMenu>Preprocessor>Modeling>Create>Areas>Circle>SolidCircle
6.Pickcenterpointat:
WPX=0,WPY=0
7.Movemousetoradiusof1andclickleftbuttontocreatecircle.
8.OKtoclosepickingmenu.
9.Toolbar:
SAVE_DB.
第五步:
增加面
1.MainMenu>Preprocessor>Modeling>Operate>Booleans>Add>Areas
2.PickAllforallareastobeadded.
3.Toolbar:
SAVE_DB.
第六步:
创建线倒角
1.UtilityMenu>PlotCtrls>Numbering
2.Turnonlinenumbering.
3.OKtochangecontrols,closethedialogbox,andautomaticallyreplot.
4.UtilityMenu>WorkPlane>DisplayWorkingPlane(toggleoff)
5.MainMenu>Preprocessor>Modeling>Create>Lines>LineFillet
6.Picklines17and8.
7.OKtofinishpickinglines(inpickingmenu).
8.Enter0.4astheradius.
9.OKtocreatelinefilletandclosethedialogbox.
10.UtilityMenu>Plot>Lines
第七步:
创建倒角面
1.UtilityMenu>PlotCtrls>Pan,Zoom,Rotate
2.ClickonZoombutton.
3.Movemousetofilletregion,clickleftbutton,movemouseoutandclickagain.
4.MainMenu>Preprocessor>Modeling>Create>Areas>Arbitrary>ByLines
5.Picklines4,5,and1.
6.OKtocreateareaandclosethepickingmenu.
7.ClickonFitbutton.
8.ClosethePan,Zoom,Rotatedialogbox.
9.UtilityMenu>Plot>Areas
10.Toolbar:
SAVE_DB.
第八步:
将面添加到一起
1.MainMenu>Preprocessor>Modeling>Operate>Booleans>Add>Areas
2.PickAllforallareastobeadded.
3.Toolbar:
SAVE_DB.
第九步:
创建第一个销孔
1.UtilityMenu>WorkPlane>DisplayWorkingPlane(toggleon)
2.MainMenu>Preprocessor>Modeling>Create>Areas>Circle>SolidCircle
3.Pickcenterpointat:
WPX=0,WPY=0
4.Movemousetoradiusof.4(showninthepickingmenu)andclickleftbuttontocreatecircle.
5.OKtoclosepickingmenu.
第十步:
移动工作平面并创建第二个销孔
1.UtilityMenu>WorkPlane>OffsetWPto>GlobalOrigin
2.MainMenu>Preprocessor>Modeling>Create>Areas>Circle>SolidCircle
3.Pickcenterpointat:
WPX=0,WPY=0
4.Movemousetoradiusof.4(showninthepickingmenu)andclickleftmousebuttontocreatecircle.
5.OKtoclosepickingmenu.
6.UtilityMenu>WorkPlane>DisplayWorkingPlane(toggleoff)
7.UtilityMenu>Plot>Replot
8.UtilityMenu>Plot>Lines
9.Toolbar:
SAVE_DB.
第十一步:
从支架上减掉销孔
1.MainMenu>Preprocessor>Modeling>Operate>Booleans>Subtract>Areas
2.Pickbracketasbaseareafromwhichtosubtract.
3.Apply(inpickingmenu).
4.Pickbothpinholesasareastobesubtracted.
5.OKtosubtractholesandclosepickingmenu.
3.定义材料:
第十二步:
设置分析类型
1.MainMenu>Preferences
2.Turnonstructuralfiltering.
3.OKtoapplyfilteringandclosethedialogbox.
第十三步:
定义材料属性
1.MainMenu>Preprocessor>MaterialProps>MaterialModels
2.Double-clickonStructural,Linear,Elastic,Isotropic.
3.Enter30e6forEX.
4.Enter.27forPRXY.
5.OKtodefinematerialpropertysetandclosethedialogbox.
6.Material>Exit
第十四步:
定义单元类型和选项
1.MainMenu>Preprocessor>ElementType>Add/Edit/Delete
2.Addanelementtype.
3.Structuralsolidfamilyofelements.
4.Choosethe8-nodequad(PLANE82).
5.OKtoapplytheelementtypeandclosethedialogbox.
6.OptionsforPLANE82aretobedefined.
7.Chooseplanestresswiththicknessoptionforelementbehavior.
8.OKtospecifyoptionsandclosetheoptionsdialogbox.
9.Closetheelementtypedialogbox.
第十五步:
定义实常数(什么是实常数?
)
1.MainMenu>Preprocessor>RealConstants>Add/Edit/Delete
2.Addarealconstantset.
3.OKforPLANE82.
4.Enter.5forTHK.
5.OKtodefinetherealconstantandclosethedialogbox.
6.Closetherealconstantdialogbox.
4.划分网格:
第十六步:
面网格划分
1.MainMenu>Preprocessor>Meshing>MeshTool
2.SetGlobalSizecontrol.
3.Typein0.5.
4.OK.
5.ChooseAreaMeshing.
6.ClickonMesh.
7.PickAllfortheareatobemeshed(inpickingmenu).Closeanywarningmessagesthatappear.
8.ClosetheMeshTool.
5.施加载荷:
第十七步:
施加位移约束
1.MainMenu>Solution>DefineLoads>Apply>Structural>Displacement>OnLines
2.Pickthefourlinesaroundleft-handhole(Linenumbers10,9,11,12).
3.OK(inpickingmenu).
4.ClickonAllDOF.
5.Enter0forzerodisplacement.
6.OKtoapplyconstraintsandclosedialogbox.
7.UtilityMenu>PlotLines
8.Toolbar:
SAVE_DB.
第十八步:
施加分布力
1.MainMenu>Solution>DefineLoads>Apply>Structural>Pressure>OnLines
2.Picklinedefiningbottomleftpartofthecircle(line6).
3.Apply.
4.Enter50forVALUE.
5.Enter500foroptionalvalue.
6.Apply.
7.Picklinedefiningbottomrightpartofcircle(line7).
8.Apply.
9.Enter500forVALUE.
10.Enter50foroptionalvalue.
11.OK.
12.Toolbar:
SAVE_DB.
6.求解:
第十九步:
求解
1.MainMenu>Solution>Solve>CurrentLS
2.Reviewtheinformationinthestatuswindow,thenchooseFile>Close
3.OKtobeginthesolution.ChooseYestoanyVerifymessagesthatappear.
4.Closetheinformationwindowwhensolutionisdone.
7.查看结果:
第二十步:
读入数据结果
1.MainMenu>GeneralPostproc>ReadResults>FirstSet
第二十一步:
绘制变形图
1.MainMenu>GeneralPostproc>PlotResults>DeformedShape
2.ChooseDef+undeformed.
3.OK.
4.UtilityMenu>PlotCtrls>Animate>DeformedShape
5.ChooseDef+undeformed.
6.OK.
第二十二步:
绘制应力图
1.MainMenu>GeneralPostproc>PlotResults>ContourPlot>NodalSolu
2.ChooseStressitemtobecontoured.
3.ScrolldownandchoosevonMises(SEQV).
4.OK.
5.UtilityMenu>PlotCtrls>Animate>DeformedResults
6.ChooseStressitemtobecontoured.
7.ScrolldownandchoosevonMises(SEQV).
8.OK.
9.MakechoicesintheAnimationController(notshown),ifnecessary,thenchooseClose.
第二十三步:
列出约束反力
1.MainMenu>GeneralPostproc>ListResults>ReactionSolu
2.OKtolistallitemsandclosethedialogbox.
3.Scrolldownandfindthetotalverticalforce,FY.
4.File>Close(Windows).
第二十四步:
退出ANSYS软件
1.Toolbar:
Quit.
2.ChooseQuit-NoSave!
3.OK.
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