ANSYS计算有预紧力的螺栓连接

/ti t le, Sample application of PSMESHet,1,92mp,ex,1,1e7mp,alpx,1,1.3e-5mp,prxy,1,0.30mp,ex,2,3e7mp,alpx,2,8.4e-6mp,prxy,2,0.30tref,70/foc,,-.09,.34,.42/dist,,.99/ang,,-55.8/view,,.39,-.87,.31/pnum,volu,1/num,1cylind,0.5,, -0.25,0, 0,180cylind,0.5,, 1,1.25, 0,180cylind,0.25,, 0,1, 0,180wpoff,.05cylind,0.35,1, 0,0.75, 0,180wpoff,-.1cylind,0.35,1, 0.75,1, 0,180 wpstyle,,,,,,,,0vglue,allnumc,allvplotmat,1smrt,offvmesh,4,5mat,2vmesh,1,3/pnum,mat,1eplotpsmesh,,example,,volu,1,0,z,0.5,,,,elems CM,lines,LINE/dist,,1.1cmplot/solueqslve,pcg,1e-8asel,s,loc,yda,all,symmdk,1,uxdk,12,uxdk,1,uzsload,1,9,,force,100,1,2/ti t le,Sample application of PSMESH - preload onlysolve!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!Finally, we construct the actual solution of interest. We want to!know what happens to the preload in the bolt, and the stress field around !it, when the assembly temperature rises to 150° F.!Both the preload and the stresses increase because, for a uniform!temperature rise, there is greater thermal expansion in the aluminum plates !than in the steel bolt. Any method for applying preload that did not!allow the load to change would be unable to predict this result.!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!/post1plnsol,s,z/soluantype,,restarttunif,150/ti t le,Sample application of PSMESH - uniform 150°solve/post1plnsol,s,zGUI操作流程：1. Set the Analysis Title(1) Choose Utility Menu> File> ChangeTitle(2) Enter the text, “Sample Application ofPSMESH” and click OK.2004-8-17 11:27 #3yiby金牌会员UID 23110精华 5积分64帖子564阅读权限70注册2003-7-3来自西南交通大学状态离线回复：【寻找】那位大哥给一个预紧分析的例子2. Define the Element TypeDefine SOLID92 as the element type.（1）Select Main Menu> Preprocessor> ElementType> Add/Edit/Delete. The Element Types dialog boxappears.（2）Click Add. The Library of Elements dialog boxappears.（3）In the scroll box on the left, select Structural,Solid.（4）Select Tet 10 node 92 in the scroll box on the rightand click OK.（5）Click Close in the Element Types dialog box.2004-8-17 11:28#4yiby金牌会员UID 23110精华 5积分64帖子564阅读权限70注册2003-7-3来自西南交通大学状态离线回复：【寻找】那位大哥给一个预紧分析的例子3. Define Material Properties（1）Select Main Menu> Preprocessor> Material Props> MaterialModels. The Define Material Model Behavior dialog box appears.（2）In the Material Models Available window, double click on Structural, Linear,Elastic, and Isotropic. A dialog box appears.（3）Enter 1E7 for EX, 0.3 for PRXY and click OK. Linear Isotropic appears underMaterial Model Number 1 in the Material Models Defined window.（4）Under Structural in the Material Models Available window, double click onThermal Expansion Coef, Isotropic. A dialog box appears.（5）Enter 1.3E-5 for ALPX and click OK. Thermal Expansion (iso) appears underMaterial Model Number 1 in the Material Models Defined window.（6） Choose Material> New Model, then enter 2 for the new material ID andclick OK. Material Model 2 appears in the Material Models Defined window on theleft.（7） Double click on Isotropic under Structural, Linear, Elastic in the MaterialModels Available window. A dialog box appears.（8） Enter 3E7 for EX, 0.3 for PRXY and click OK. Linear Isotropic appears underMaterial Model Number 2 in the Material Models Defined window.（9） Double click on Isotropic under Structural, Thermal Expansion Coef in theMaterial Models Available Window. A dialog box appears.（10） Enter 8.4E-6 for ALPX and click OK. Thermal Expansion (iso) appearsunder Material Model Number 2 in the Material Models Defined window.（11） Choose Material> Exit to close the Define Material Behavior dialog box.（12） Select Main Menu> Preprocessor> Loads> Define Loads>Settings> Reference Temp.（13） Enter 70 as the reference temperature and click OK.2004-8-17 11:30 #5 yiby金牌会员UID 23110精华 5积分 64帖子 564阅读权限 70注册 2003-7-3 来自 西南交通大学 状态 离线 回复： 【寻找】那位大哥给一个预紧分析的例子 4. Set Viewing Options （1） Select Utility Menu> PlotCtrls> View Settings> Focus Point. The Focus Point dialog box appears. （2） Choose User Specified. （3） Enter -.09, .34, and .42 as the User specified locate and click OK. （4） Select Utility Menu> PlotCtrls> View Settings> Magnification. The Magnification dialog box appears（5） Choose User Specified.（6） Enter .99 as the User specified distance and click OK.（7） Select Utility Menu> PlotCtrls> View Settings> Angle of Rotation.The Angle of Rotation dialog box appears.（8） Enter -55.8 as the Angle in degrees value and click OK.（9） Select Utility Menu> PlotCtrls> View Settings> Viewing Direction.The Viewing Direction dialog box appears.（10） Enter .39, -.87, and .31 as the XV, YV, and ZV values, respectively andclick OK.（11） Select Utility Menu> PlotCtrls> Numbering. Turn on Volumenumbers.（12） Choose Numbering shown with Colors only and click OK.2004-8-17 11:32 #6 yiby金牌会员UID 23110精华 5积分 64帖子 564阅读权限 70注册 2003-7-3 来自 西南交通大学 状态 离线 回复： 【寻找】那位大哥给一个预紧分析的例子 5. Create Geometry （1） Select Main Menu> Preprocessor> Modeling> Create> Volumes> By Dimensions. The Create Cylinder by Dimensions dialog box appears. （2） Enter the following values:Outer radius (RAD1): 0.5 Z-coordinates (Z1, Z2): -0.25, 0 Ending angle (THETA2): 180（3） Click Apply to create the cylinder and keep the Create Cylinder by Dimensions dialog box open.（4） Enter the following values:Outer radius (RAD1): 0.5Z-coordinates (Z1, Z2): 1, 1.25Ending angle (THETA2): 180（5） Click Apply to create the cylinder and keep the Create Cylinder byDimensions dialog box open.（6） Enter the following values:Outer radius (RAD1): 0.25Z-coordinates (Z1, Z2): 0, 1Ending angle (THETA2): 180（7）Click OK to create the cylinder and close the Create Cylinder by Dimensions dialog box.（8）Select Utility Menu> WorkPlane> Offset WP by increments（9）Enter 0.05 in X, Y, Z Offset, press enter, and click OK. This offsets the working plane 0.05 units in the working plane x-direction.（10）Select Main Menu> Preprocessor> Modeling> Create> Volumes> Cylinder> By Dimensions. The Create Cylinder by Dimensions dialog box appears.（11）Enter the following values:Outer radius (RAD1): 1Optional inner radius (RAD2): 0.35Z-coordinates (Z1, Z2): 0, 0.75Ending angle (THETA2): 180（12）Click OK to create the cylinder and close the Create Cylinder by Dimensions dialog box.（13）Select Utility Menu> WorkPlane> Offset WP by increments.（14）Enter -0.10 in X, Y, Z Offset, press enter, and click OK. This offsets the working plane -0.10 units in the working plane x-direction.（15）Select Main Menu> Preprocessor> Modeling> Create> Volumes> Cylinder> By Dimensions. The Create Cylinder by Dimensions dialog box appears.（16）Enter the following values:Outer radius (RAD1): 1Optional inner radius (RAD2): 0.35Z-coordinates (Z1, Z2): 0.75, 1Ending angle (THETA2): 180（17）Click OK to create the cylinder and close the Create Cylinder by Dimensions dialog box.（18）Select Utility Menu> WorkPlane> Display Working Plane (toggle off).（19）Select Main Menu> Preprocessor> Modeling> Operate> Booleans> Glue> Volumes.（20）Pick all (in the picker).（21） Select Main Menu> Preprocessor> Numbering Ctrls> CompressNumbers.（22） Select All for Item to be compressed and click OK.（23） Select Utility Menu> Plot> Volumes.2004-8-17 11:34 #7 yiby金牌会员UID 23110精华 5积分 64帖子 564阅读权限 70注册 2003-7-3 来自 西南交通大学 状态 离线 回复： 【寻找】那位大哥给一个预紧分析的例子 6. Mesh Geometry （1） Select Main Menu> Preprocessor> Meshing> Meshtool. （2） Under Element Attributes, choose Global and click Set. （3） Set the Material number to 1 and click OK. （4） Be sure smart sizing is off and click Mesh.（5） Pick volumes 4 and 5 (the two annular plates) and click OK in the picking menu.（6） Select Utility Menu> Plot> Volumes.（7） In the MeshTool dialog box, choose Global and click Set under ElementAttributes.（8） Set the Material number to 2 and click OK.（9） Click Mesh.（10） Pick volumes 1, 2, and 3 and click OK in the picking menu.（11） Close the MeshTool dialog box.（12） Select Utility Menu> PlotCtrls> Numbering.（13） Choose Material numbers for Elem/Attrib numbering and clickOK.（14） Select Utility Menu> Plot> Elements.（15） Select Main Menu> Preprocessor> Sections> Pretension>Pretensn Mesh> With Options> Divide at Valu> Elements in Volu.（16） Pick volume 1 and click OK in the picker.（17） Enter the following information in the dialog box and click OK:NAME:ExampleKCN: Global CartesianKDIR: Z-axisVALUE: 0.5ECOMP: elems（18） Select Utility Menu> Select> Comp/Assembly> CreateComponent.（19） Enter Line for the Component name (Cname).（20） Choose Lines for the Entity and click OK.（21） Select Utility Menu> PlotCtrls> View Settings> Magnification.（22） Choose User Specified.（23） Enter 1.1 for the User specified distance and click OK.（24） Select Utility Menu> Plot> Components> Selected Components.2004-8-17 11:37 #8 yiby金牌会员UID 23110精华 5积分 64帖子 564阅读权限 70注册 2003-7-3 来自 西南交通大学 状态 离线 回复： 【寻找】那位大哥给一个预紧分析的例子 7. Solution: Apply Pretension （1） Select Main Menu> Solution> Analysis Types> Sol'n Controls. （2） Click on the Sol'n Options tab. （3） Choose Precondi t ion CG under Equation Solvers and click OK. （4） Select Utility Menu> Select> Entities.（5） Choose Areas, By Location, and Y -coordinates and click OK.（6） Select Main Menu> Solution> Define Loads> Apply>Structural> Displacement> Symmetry B.C.> On Areas.（7）Click Pick All.（8）Select Utility Menu> Select> Entities.（9）Make sure Areas are still selected and click Sele All.（10）Click OK.（11）Select Main Menu> Solution> Define Loads> Apply>Structural> Displacement> On Keypoints.（12）Pick the middle keypoint on the bottom of the bolt (KeyP No. = 1) andclick OK in the picker.（13）Choose UX and UZ for DOFs to be constrained (Lab2) and click Apply toaccept your choices and return to the picker.（14）Pick the middle keypoint on the top of the bolt (KeyP No. = 12) and clickOK in the picker.（15）Choose UX for DOFs to be constrained (Lab2) and click OK.（16）Select Main Menu> Solution> Define Loads> Apply>Structural> Pretensn Sectn.（17）Choose 1 Example under Pretension Sections.（18）Enter 100 for Force (under Pretension Load) and click OK.（19）Select Utility Menu> File> Change Title.（20）Change the ti t le to “Sample Application of PSMESH - Preload Only” andclick OK.（21）Select Main Menu> Solution> Solve> Current LS.（22）R eview the information in the /STATUS Command window and click OK tobegin the solution.（23）Click Close when the Solution is Done message appears.2004-8-17 11:39 #9yiby金牌会员UID 23110精华 5积分 64帖子 564阅读权限 70注册 2003-7-3来自 西南交通大学状态 离线回复： 【寻找】那位大哥给一个预紧分析的例子 8. Postprocessing: Pretension Results （1） Select Main Menu> General Postproc> Plot Resul t s> Contour Plot> Nodal Solu. The Contour Nodal Solution Data dialog box appears. （2） Select Stress from the scroll box on the left and Z-direction (SZ) from the scroll box on the right and click OK. 2004-8-1711:40 #10 yiby金牌会员UID 23110精华 5积分 64帖子 564阅读权限 70注册 2003-7-3 来自 西南交通大学 状态 离线 回复： 【寻找】那位大哥给一个预紧分析的例子 9. Solution: Apply Thermal Gradient （1） Select Main Menu> Solution> Analysis Type> R estart. Close any warning messages that appear. （2） Select Main Menu> Solution> Define Loads> Settings> Uniform Temp. （3） Enter 150 for the uniform temperature and click OK.（4） Select Utility Menu> File> Change Title.（5） Change the title to “Sample Application of PSMESH - Uniform 150 deg” andclick OK.（6） Select Main Menu> Solution> Solve> Current LS.2004-8-1711:41 #11 yiby金牌会员回复： 【寻找】那位大哥给一个预紧分析的例子 10. Postprocessing: Pretension and Thermal ResultsUID 23110精华 5积分 64帖子 564阅读权限 70注册 2003-7-3来自 西南交通大学状态 离线（1） Select Main Menu> General Postproc> Plot Resul t s> Contour Plot> Nodal Solu. The Contour Nodal Solution Data dialog box appears. （2） Select Stress from the scroll box on the left and Z-direction (SZ) from the scroll box on the right and click OK. 2004-8-1711:42 #12 yiby金牌会员UID 23110 精华 5 积分 64 帖子 564阅读权限 7注册 2003-7-3来自 西南交通大学状态 离线回复： 【寻找】那位大哥给一个预紧分析的例子 11. Exit ANSYS （1） Choose QUIT from the ANSYS Toolbar.（2） Choose Quit - No Save!（3） Click on OK.2004-8-17 11:42 #13 yiby金牌会员UID 23110精华 5积分 64帖子 564 回复： 【寻找】那位大哥给一个预紧分析的例子 模型初始网格划分： 图片附件: 306487--embed.jpg (2004-8-17 11:46, 0 bytes)注册 2003-7-3来自 西南交通大学状态 离线2004-8-1711:46 #14 yiby金牌会员UID 23110精华 5积分 64帖子 564阅读权限 70注册 2003-7-3来自 西南交通大学 回复： 【寻找】那位大哥给一个预紧分析的例子 定义预紧力单元： 图片附件: 306488--embed.jpg (2004-8-17 11:47, 0 bytes)2004-8-17 11:47#15yiby金牌会员UID23110精华5回复：【寻找】那位大哥给一个预紧分析的例子结果图：图片附件: 306490--embed.JPG (2004-8-17 11:48, 0 bytes)线。