Ansys Apdl Bolt Torque Tutorial

8/10/2019 Ansys Apdl Bolt Torque Tutorial

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Bolt Torque

Workshop 3

Surface Effect Elements


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3. Surface Effect Elements

Bo l t 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.


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Bo l t Torque

Loads and Material Properties


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Bo l t 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


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Bo l t 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


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Bo l t 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


Or issue:

EMODIF,ALL,ESYS,11

ELIST

EPLOT


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Bo l t 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:


Or issue:

/PSYMB,ESYS,0

EPLOT


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Bo l t 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


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Bo l t Torque

11. Change surface load symbols for Tan-X pressures to arrows:


Or issue:

/PSF,PRES,TANX,2

EPLOT


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Bo l t Torque

12. Select everything and plot elements:

Utility Menu > Select > Everything


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


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Bo l t Torque

14. Save the database and obtain the solution using the PCG iterative solver:

Main Menu > Solution > -Analysis Type- Soln 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


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Bo l t 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 buttonin the Toolbar

Or issue:

SAVE

FINISH

/EXIT

Ansys Apdl Bolt Torque Tutorial

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