Bolt Torque Workshop 3 Surface Effect Elements. Workshop Supplement October 30, 2001 Inventory #001572 W3-2 3. Surface Effect Elements Bolt Torque Description.

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Presentation transcript:

Bolt Torque Workshop 3 Surface Effect Elements

Workshop Supplement October 30, 2001 Inventory # W Surface Effect Elements Bolt Torque Description Apply a torque load to the bolt model below using surface effect elements. Solve and review the global cylindrical UY results in the postprocessor.

Workshop Supplement October 30, 2001 Inventory # W Surface Effect Elements Bolt Torque Loads and Material Properties

Workshop Supplement October 30, 2001 Inventory # W Surface Effect Elements Bolt Torque 1.Enter ANSYS in the working directory specified by your instructor using “bolt-torque” as the jobname. 2.Resume the “bolt-torque.db1” database file: –Utility Menu > File > Resume from … –Or issue: RESUME,bolt-torque,db1 3.Enter the preprocessor and select areas 7 and 8, and then select all the nodes attached to areas 7 and 8: –Main Menu > Preprocessor –Utility Menu > Select > Entities … –Utility Menu > Plot > Nodes –Or issue: /PREP7 ASEL,S,,,7,8 NSLA,,1 NPLOT

Workshop Supplement October 30, 2001 Inventory # W Surface Effect Elements Bolt Torque 4.Set the element type attribute pointer to 2 (SURF154) and create the surface effect elements: –Main Menu > Preprocessor > -Attributes- Define > Default Attribs … –Main Menu > Preprocessor > -Modeling- Create > Elements > -Surf / Contact- Surf Effect > No extra Node + –Or issue: TYPE,2 ESURF,ALL 5.Select all TYPE 2 elements and plot them with their element coordinate system display turned on: –Utility Menu > Select > Entities … –Utility Menu > PlotCtrls > Symbols … –Utility Menu > Plot > Elements –Or issue: ESEL,S,TYPE,,2 /PSYMB,ESYS,1 EPLOT 6.Create a local cylindrical coordinate system 11 at the global origin: –Utility Menu > WorkPlane > Local Coordinate Systems > Create Local CS > At Specified Loc + –Or issue: LOCAL,11,1,0,0,0

Workshop Supplement October 30, 2001 Inventory # W Surface Effect Elements Bolt Torque 7.Change the element coordinate system (ESYS) for the SURF154 elements to 11: –Main Menu > Preprocessor > -Modeling- Move / Modify > -Elements- Modify Attrib + –Utility Menu > List > Elements > Nodes + Attributes –Utility Menu > Plot > Elements –Or issue: EMODIF,ALL,ESYS,11 ELIST EPLOT

Workshop Supplement October 30, 2001 Inventory # W Surface Effect Elements Bolt Torque 8.Create a component named “e_surf” of all TYPE 2 elements: –Utiltity Menu > Select > Comp/Assembly > Create Component... –Or issue: CM,e_surf,ELEM 9.Turn off the element coordinate system: –Utility Menu > PlotCtrls > Symbols … –Or issue: /PSYMB,ESYS,0 EPLOT

Workshop Supplement October 30, 2001 Inventory # W Surface Effect Elements Bolt Torque 10.Apply a 10,000 psi tangential pressure (along the element X direction) on the SURF154 elements: –Main Menu > Preprocessor > Loads > -Loads- Apply > -Structural- Pressure > On Elements + –Or issue: SFE,e_surf,2,PRES,,10000

Workshop Supplement October 30, 2001 Inventory # W Surface Effect Elements Bolt Torque 11.Change surface load symbols for “Tan-X pressures” to arrows: –Utility Menu > PlotCtrls > Symbols … –Or issue: /PSF,PRES,TANX,2 EPLOT

Workshop Supplement October 30, 2001 Inventory # W Surface Effect Elements Bolt Torque 12.Select everything and plot elements: –Utility Menu > Select > Everything –Utility Menu > Plot > Elements –Or issue: ALLSEL EPLOT 13.Constrain all DOFs on area 1 (base area of bolt at Z=0): –Main Menu > Preprocessor > Loads > -Loads- Apply > -Structural- Displacement > On Areas + –Or issue: DA,1,ALL

Workshop Supplement October 30, 2001 Inventory # W Surface Effect Elements Bolt Torque 14.Save the database and obtain the solution using the PCG iterative solver: –Main Menu > Solution > -Analysis Type- Sol’n Control.. –Pick the “SAVE_DB” button in the Toolbar (or select: Utility Menu > File > Save as Jobname.db) –Main Menu > Solution > -Solve- Current LS –Or issue: /SOLU EQSLV,PCG SAVE SOLVE 15.Enter the general postprocessor and switch to the cylindrical results coordinate system, and then turn on element outlines for contour plots: –Main Menu > General Postproc > Options for Outp.. –Utility Menu > PlotCtrls > Style > Edge Options... –Or issue: /POST1 RSYS,1 /EDGE,1,1,45 /GLINE,1,0

Workshop Supplement October 30, 2001 Inventory # W Surface Effect Elements Bolt Torque 16.Plot the UY displacement: –Main Menu > General Postproc > Plot Results > -Contour Plot- Nodal Solu... –Or issue: PLNSOL,U,Y 17.Save and exit ANSYS: –Pick the “QUIT” button in the Toolbar –Or issue: SAVE FINISH /EXIT