Workshop 3 Surface Effect Elements Bolt Torque 3

Workshop 3 Surface Effect Elements Bolt Torque

3. Surface Effect Elements Bolt Torque Workshop Supplement • Apply a torque load to the bolt model below using surface effect elements. Solve and review the global cylindrical UY results in the postprocessor. INTRODUCTION TO ANSYS 6. 0 - Part 2 Description October 30, 2001 Inventory #001572 W 3 -2

3. Surface Effect Elements Bolt Torque INTRODUCTION TO ANSYS 6. 0 - Part 2 Loads and Material Properties Workshop Supplement October 30, 2001 Inventory #001572 W 3 -3

3. Surface Effect Elements Bolt Torque Workshop Supplement Enter ANSYS in the working directory specified by your instructor using “bolttorque” as the jobname. 2. Resume the “bolt-torque. db 1” database file: – – Utility Menu > File > Resume from … Or issue: RESUME, bolt-torque, db 1 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: /PREP 7 ASEL, S, , , 7, 8 NSLA, , 1 NPLOT INTRODUCTION TO ANSYS 6. 0 - Part 2 1. October 30, 2001 Inventory #001572 W 3 -4

3. Surface Effect Elements Bolt Torque Set the element type attribute pointer to 2 (SURF 154) and create the surface effect elements: – – – 5. Select all TYPE 2 elements and plot them with their element coordinate system display turned on: – – 6. 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 Utility Menu > Select > Entities … Utility Menu > Plot. Ctrls > Symbols … Utility Menu > Plot > Elements Or issue: ESEL, S, TYPE, , 2 /PSYMB, ESYS, 1 EPLOT Create a local cylindrical coordinate system 11 at the global origin: – – Utility Menu > Work. Plane > Local Coordinate Systems > Create Local CS > At Specified Loc + Or issue: LOCAL, 11, 1, 0, 0, 0 INTRODUCTION TO ANSYS 6. 0 - Part 2 4. Workshop Supplement October 30, 2001 Inventory #001572 W 3 -5

3. Surface Effect Elements Bolt Torque Change the element coordinate system (ESYS) for the SURF 154 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 INTRODUCTION TO ANSYS 6. 0 - Part 2 7. Workshop Supplement October 30, 2001 Inventory #001572 W 3 -6

3. Surface Effect Elements Bolt Torque 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 > Plot. Ctrls > Symbols … Or issue: /PSYMB, ESYS, 0 EPLOT INTRODUCTION TO ANSYS 6. 0 - Part 2 8. Workshop Supplement October 30, 2001 Inventory #001572 W 3 -7

3. Surface Effect Elements Bolt Torque – – Main Menu > Preprocessor > Loads > -Loads- Apply > -Structural- Pressure > On Elements + Or issue: SFE, e_surf, 2, PRES, , 10000 INTRODUCTION TO ANSYS 6. 0 - Part 2 10. Apply a 10, 000 psi tangential pressure (along the element X direction) on the SURF 154 elements: Workshop Supplement October 30, 2001 Inventory #001572 W 3 -8

3. Surface Effect Elements Bolt Torque – – Utility Menu > Plot. Ctrls > Symbols … Or issue: /PSF, PRES, TANX, 2 EPLOT INTRODUCTION TO ANSYS 6. 0 - Part 2 11. Change surface load symbols for “Tan-X pressures” to arrows: Workshop Supplement October 30, 2001 Inventory #001572 W 3 -9

3. Surface Effect Elements Bolt Torque – – – 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 INTRODUCTION TO ANSYS 6. 0 - Part 2 12. Select everything and plot elements: Workshop Supplement October 30, 2001 Inventory #001572 W 3 -10

3. Surface Effect Elements Bolt Torque Workshop Supplement – – 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 > Plot. Ctrls > Style > Edge Options. . . Or issue: /POST 1 RSYS, 1 /EDGE, 1, 1, 45 /GLINE, 1, 0 INTRODUCTION TO ANSYS 6. 0 - Part 2 14. Save the database and obtain the solution using the PCG iterative solver: October 30, 2001 Inventory #001572 W 3 -11

3. Surface Effect Elements Bolt Torque – – 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 INTRODUCTION TO ANSYS 6. 0 - Part 2 16. Plot the UY displacement: Workshop Supplement October 30, 2001 Inventory #001572 W 3 -12