Ansys Apdl Bolt Torque Tutorial

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    Bolt Torque

    Workshop 3

    Surface Effect Elements

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    Octob er 30, 2001

    Invento ry #001572

    W3-2

    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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    3. Surface Effect Elements

    Bo l t Torque

    Loads and Material Properties

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    3. Surface Effect Elements

    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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    3. Surface Effect Elements

    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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    3. Surface Effect Elements

    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

    Utility Menu > Plot > Elements

    Or issue:

    EMODIF,ALL,ESYS,11

    ELIST

    EPLOT

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    3. Surface Effect Elements

    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:

    Utility Menu > PlotCtrls > Symbols

    Or issue:

    /PSYMB,ESYS,0

    EPLOT

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    3. Surface Effect Elements

    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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    3. Surface Effect Elements

    Bo l t Torque

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

    Utility Menu > PlotCtrls > Symbols

    Or issue:

    /PSF,PRES,TANX,2

    EPLOT

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    3. Surface Effect Elements

    Bo l t 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

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    3. Surface Effect Elements

    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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    3. Surface Effect Elements

    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