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Bolt Torque

Workshop 3 Surface Effect Elements. Bolt Torque. 3. 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. 3. Surface Effect Elements Bolt Torque.

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Bolt Torque

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  1. Workshop 3 Surface Effect Elements Bolt Torque

  2. 3. Surface Effect ElementsBolt 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. October 30, 2001 Inventory #001572 W3-2

  3. 3. Surface Effect Elements Bolt Torque Loads and Material Properties October 30, 2001 Inventory #001572 W3-3

  4. 3. Surface Effect ElementsBolt 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 October 30, 2001 Inventory #001572 W3-4

  5. 3. Surface Effect ElementsBolt 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 October 30, 2001 Inventory #001572 W3-5

  6. 3. Surface Effect ElementsBolt 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 October 30, 2001 Inventory #001572 W3-6

  7. 3. Surface Effect ElementsBolt 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 October 30, 2001 Inventory #001572 W3-7

  8. 3. Surface Effect ElementsBolt 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 October 30, 2001 Inventory #001572 W3-8

  9. 3. Surface Effect ElementsBolt Torque 11. Change surface load symbols for “Tan-X pressures” to arrows: • Utility Menu > PlotCtrls > Symbols … • Or issue: /PSF,PRES,TANX,2 EPLOT October 30, 2001 Inventory #001572 W3-9

  10. 3. Surface Effect ElementsBolt 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 October 30, 2001 Inventory #001572 W3-10

  11. 3. Surface Effect ElementsBolt 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 October 30, 2001 Inventory #001572 W3-11

  12. 3. Surface Effect ElementsBolt 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 October 30, 2001 Inventory #001572 W3-12

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