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Bolt and nut contact analsyis(axisymmetric)

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Project First Saved Tuesday, October 25, 2016 Last Saved Tuesday, October 25, 2016 Product Version 16.0 Release Save Project Before Solution No Save Project After Solution No
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  • Project

    First Saved Tuesday, October 25, 2016

    Last Saved Tuesday, October 25, 2016

    Product Version 16.0 Release

    Save Project Before Solution No

    Save Project After Solution No

  • Contents

    Units

    Model (C4) o Geometry

    Parts o Coordinate Systems o Connections

    Contacts Frictional - Bolt To Nut

    o Mesh Mesh Controls

    o Static Structural (C5) Analysis Settings Loads Solution (C6)

    Solution Information Results

    Material Data o Structural Steel

    Units

    TABLE 1

    Unit System Metric (mm, kg, N, s, mV, mA) Degrees RPM Celsius

    Angle Degrees

    Rotational Velocity RPM

    Temperature Celsius

    Model (C4)

    Geometry

    TABLE 2 Model (C4) > Geometry

    Object Name Geometry

    State Fully Defined

    Definition

    Source C:\Users\Vishnu

    Rajarangan\AppData\Local\Temp\Threads.tmp\Threads_files\dp0\Geom-1\DM\Geom-1.agdb

    Type DesignModeler

    Length Unit Millimeters

    Element Control Program Controlled

    2D Behavior Axisymmetric

    Display Style Body Color

    Bounding Box

  • Length X 17. mm

    Length Y 32. mm

    Properties

    Volume N/A

    Mass N/A

    Surface Area(approx.)

    450.55 mm

    Scale Factor Value 1.

    Statistics

    Bodies 2

    Active Bodies 2

    Nodes 6926

    Elements 2098

    Mesh Metric None

    Basic Geometry Options

    Parameters Yes

    Parameter Key DS

    Attributes No

    Named Selections No

    Material Properties No

    Advanced Geometry Options

    Use Associativity Yes

    Coordinate Systems

    No

    Reader Mode Saves Updated File

    No

    Use Instances Yes

    Smart CAD Update No

    Compare Parts On Update

    No

    Attach File Via Temp File

    Yes

    Temporary Directory

    C:\Users\Vishnu Rajarangan\AppData\Local\Temp

    Analysis Type 2-D

    Decompose Disjoint Geometry

    Yes

    Enclosure and Symmetry

    Processing Yes

    TABLE 3 Model (C4) > Geometry > Parts

    Object Name Bolt Nut

    State Meshed

    Graphics Properties

    Visible Yes

    Transparency 1

    Definition

    Suppressed No

  • Stiffness Behavior Flexible

    Coordinate System Default Coordinate System

    Reference Temperature By Environment

    Material

    Assignment Structural Steel

    Nonlinear Effects Yes

    Thermal Strain Effects Yes

    Bounding Box

    Length X 10. mm 8.353 mm

    Length Y 32. mm 19.686 mm

    Properties

    Volume N/A

    Mass N/A

    Centroid X N/A

    Centroid Y N/A

    Centroid Z N/A

    Moment of Inertia Ip1 N/A

    Moment of Inertia Ip2 N/A

    Moment of Inertia Ip3 N/A

    Surface Area(approx.) 297.67 mm 152.88 mm

    Statistics

    Nodes 3795 3131

    Elements 1148 950

    Mesh Metric None

    Coordinate Systems

    TABLE 4 Model (C4) > Coordinate Systems > Coordinate System

    Object Name Global Coordinate System

    State Fully Defined

    Definition

    Type Cartesian

    Coordinate System ID 0.

    Origin

    Origin X 0. mm

    Origin Y 0. mm

    Directional Vectors

    X Axis Data [ 1. 0. ]

    Y Axis Data [ 0. 1. ]

    Connections

    TABLE 5 Model (C4) > Connections

    Object Name Connections

    State Fully Defined

    Auto Detection

  • Generate Automatic Connection On Refresh Yes

    Transparency

    Enabled Yes

    TABLE 6 Model (C4) > Connections > Contacts

    Object Name Contacts

    State Fully Defined

    Definition

    Connection Type Contact

    Scope

    Scoping Method Geometry Selection

    Geometry All Bodies

    Auto Detection

    Tolerance Type Slider

    Tolerance Slider 0.

    Tolerance Value 9.0588e-002 mm

    Use Range No

    Edge/Edge Yes

    Priority Include All

    Group By Bodies

    Search Across Bodies

    Statistics

    Connections 1

    Active Connections 1

    TABLE 7 Model (C4) > Connections > Contacts > Contact Regions

    Object Name Frictional - Bolt To Nut

    State Fully Defined

    Scope

    Scoping Method Geometry Selection

    Contact 8 Edges

    Target 8 Edges

    Contact Bodies Bolt

    Target Bodies Nut

    Shell Thickness Effect No

    Definition

    Type Frictional

    Friction Coefficient 0.3

    Scope Mode Manual

    Behavior Symmetric

    Trim Contact Program Controlled

    Suppressed No

    Advanced

    Formulation Augmented Lagrange

    Detection Method Program Controlled

    Penetration Tolerance Program Controlled

    Elastic Slip Tolerance Program Controlled

  • Normal Stiffness Program Controlled

    Update Stiffness Program Controlled

    Stabilization Damping Factor 0.

    Pinball Region Program Controlled

    Time Step Controls None

    Geometric Modification

    Interface Treatment Add Offset, No Ramping

    Offset 0. mm

    Contact Geometry Correction None

    Target Geometry Correction None

    Mesh

    TABLE 8 Model (C4) > Mesh

    Object Name Mesh

    State Solved

    Display

    Display Style Body Color

    Defaults

    Physics Preference Mechanical

    Relevance 0

    Sizing

    Use Advanced Size Function Off

    Relevance Center Coarse

    Element Size Default

    Initial Size Seed Active Assembly

    Smoothing Medium

    Transition Fast

    Span Angle Center Coarse

    Minimum Edge Length 0.312920 mm

    Inflation

    Use Automatic Inflation None

    Inflation Option Smooth Transition

    Transition Ratio 0.272

    Maximum Layers 2

    Growth Rate 1.2

    Inflation Algorithm Pre

    View Advanced Options No

    Patch Conforming Options

    Triangle Surface Mesher Program Controlled

    Patch Independent Options

    Topology Checking No

    Advanced

    Number of CPUs for Parallel Part Meshing Program Controlled

    Shape Checking Standard Mechanical

    Element Midside Nodes Program Controlled

    Straight Sided Elements No

  • Number of Retries Default (4)

    Extra Retries For Assembly Yes

    Rigid Body Behavior Dimensionally Reduced

    Mesh Morphing Disabled

    Defeaturing

    Use Sheet Thickness for Pinch No

    Pinch Tolerance Please Define

    Generate Pinch on Refresh No

    Sheet Loop Removal No

    Automatic Mesh Based Defeaturing On

    Defeaturing Tolerance Default

    Statistics

    Nodes 6926

    Elements 2098

    Mesh Metric None

    TABLE 9 Model (C4) > Mesh > Mesh Controls

    Object Name Edge Sizing Edge Sizing 2

    State Fully Defined

    Scope

    Scoping Method Geometry Selection

    Geometry 16 Edges 15 Edges

    Definition

    Suppressed No

    Type Element Size

    Element Size 0.1 mm

    Behavior Soft

    Bias Type No Bias

    Static Structural (C5)

    TABLE 10 Model (C4) > Analysis

    Object Name Static Structural (C5)

    State Solved

    Definition

    Physics Type Structural

    Analysis Type Static Structural

    Solver Target Mechanical APDL

    Options

    Environment Temperature 22. C

    Generate Input Only No

    TABLE 11 Model (C4) > Static Structural (C5) > Analysis Settings

    Object Name Analysis Settings

    State Fully Defined

  • Step Controls

    Number Of Steps 1.

    Current Step Number

    1.

    Step End Time 1. s

    Auto Time Stepping

    Program Controlled

    Solver Controls

    Solver Type Program Controlled

    Weak Springs Program Controlled

    Solver Pivot Checking

    Program Controlled

    Large Deflection Off

    Inertia Relief Off

    Restart Controls

    Generate Restart Points

    Program Controlled

    Retain Files After Full Solve

    No

    Nonlinear Controls

    Newton-Raphson Option

    Program Controlled

    Force Convergence

    Program Controlled

    Moment Convergence

    Program Controlled

    Displacement Convergence

    Program Controlled

    Rotation Convergence

    Program Controlled

    Line Search Program Controlled

    Stabilization Off

    Output Controls

    Stress Yes

    Strain Yes

    Nodal Forces No

    Contact Miscellaneous

    No

    General Miscellaneous

    No

    Store Results At All Time Points

    Analysis Data Management

    Solver Files Directory

    C:\Users\Vishnu Rajarangan\AppData\Local\Temp\Threads.tmp\Threads_files\dp0\SYS\MECH\

    Future Analysis None

    Scratch Solver Files Directory

    Save MAPDL db No

    Delete Unneeded Files

    Yes

  • Nonlinear Solution Yes

    Solver Units Active System

    Solver Unit System nmm

    TABLE 12 Model (C4) > Static Structural (C5) > Loads

    Object Name Force Frictionless Support

    State Fully Defined

    Scope

    Scoping Method Geometry Selection

    Geometry 1 Edge 2 Edges

    Definition

    Type Force Frictionless Support

    Define By Components

    Coordinate System Global Coordinate System

    X Component 0. N (ramped)

    Y Component -10000 N (ramped)

    Suppressed No

    FIGURE 1 Model (C4) > Static Structural (C5) > Force

    Solution (C6)

    TABLE 13 Model (C4) > Static Structural (C5) > Solution

  • Object Name Solution (C6)

    State Solved

    Adaptive Mesh Refinement

    Max Refinement Loops 1.

    Refinement Depth 2.

    Information

    Status Done

    Post Processing

    Calculate Beam Section Results No

    TABLE 14 Model (C4) > Static Structural (C5) > Solution (C6) > Solution Information

    Object Name Solution Information

    State Solved

    Solution Information

    Solution Output Force Convergence

    Newton-Raphson Residuals 0

    Update Interval 2.5 s

    Display Points All

    FE Connection Visibility

    Activate Visibility Yes

    Display All FE Connectors

    Draw Connections Attached To All Nodes

    Line Color Connection Type

    Visible on Results No

    Line Thickness Single

    Display Type Lines

    FIGURE 2 Model (C4) > Static Structural (C5) > Solution (C6) > Solution Information

  • FIGURE 3 Model (C4) > Static Structural (C5) > Solution (C6) > Solution Information

  • TABLE 15 Model (C4) > Static Structural (C5) > Solution (C6) > Results

    Object Name Total

    Deformation Equivalent Stress Radial Axial

    hoop stress

    State Solved

    Scope

    Scoping Method Geometry Selection

    Geometry All Bodies

    Definition

    Type Total

    Deformation Equivalent (von-Mises)

    Stress Normal Stress

    By Time

    Display Time Last

    Calculate Time History

    Yes

    Identifier

    Suppressed No

    Orientation X Axis Y Axis Z Axis

    Coordinate System Global Coordinate System

    Results

    Minimum 3.4001e-004

    mm 0.78379 MPa

    -84.653 MPa

    -175.27 MPa

    -51.136 MPa

    Maximum 5.7106e-003

    mm 171.87 MPa

    87.029 MPa

    193.43 MPa

    62.511 MPa

    Minimum Occurs On Nut

    Maximum Occurs On

    Bolt

    Minimum Value Over Time

    Minimum 6.7975e-005

    mm 0.15677 MPa

    -84.653 MPa

    -175.27 MPa

    -51.136 MPa

    Maximum 3.4001e-004

    mm 0.78379 MPa

    -16.934 MPa

    -35.06 MPa

    -10.239 MPa

    Maximum Value Over Time

    Minimum 1.1416e-003

    mm 34.4 MPa 17.46 MPa

    38.715 MPa

    12.518 MPa

    Maximum 5.7106e-003

    mm 171.87 MPa

    87.029 MPa

    193.43 MPa

    62.511 MPa

    Information

    Time 1. s

    Load Step 1

    Substep 4

    Iteration Number 7

    Integration Point Results

    Display Option Averaged

    Average Across Bodies

    No

    FIGURE 4 Model (C4) > Static Structural (C5) > Solution (C6) > Total Deformation

  • TABLE 16 Model (C4) > Static Structural (C5) > Solution (C6) > Total Deformation

    Time [s] Minimum [mm] Maximum [mm]

    0.2 6.7975e-005 1.1416e-003

    0.4 1.3597e-004 2.2838e-003

    0.7 2.3799e-004 3.9973e-003

    1. 3.4001e-004 5.7106e-003

    FIGURE 5 Model (C4) > Static Structural (C5) > Solution (C6) > Total Deformation > Figure

  • FIGURE 6 Model (C4) > Static Structural (C5) > Solution (C6) > Equivalent Stress

  • TABLE 17 Model (C4) > Static Structural (C5) > Solution (C6) > Equivalent Stress

    Time [s] Minimum [MPa] Maximum [MPa]

    0.2 0.15677 34.4

    0.4 0.31349 68.768

    0.7 0.5486 120.32

    1. 0.78379 171.87

    FIGURE 7 Model (C4) > Static Structural (C5) > Solution (C6) > Equivalent Stress > Figure

  • FIGURE 8 Model (C4) > Static Structural (C5) > Solution (C6) > Radial

  • TABLE 18 Model (C4) > Static Structural (C5) > Solution (C6) > Radial

    Time [s] Minimum [MPa] Maximum [MPa]

    0.2 -16.934 17.46

    0.4 -33.862 34.846

    0.7 -59.255 60.923

    1. -84.653 87.029

    FIGURE 9 Model (C4) > Static Structural (C5) > Solution (C6) > Radial > Figure

  • FIGURE 10 Model (C4) > Static Structural (C5) > Solution (C6) > Axial

  • TABLE 19 Model (C4) > Static Structural (C5) > Solution (C6) > Axial

    Time [s] Minimum [MPa] Maximum [MPa]

    0.2 -35.06 38.715

    0.4 -70.113 77.395

    0.7 -122.69 135.41

    1. -175.27 193.43

    FIGURE 11 Model (C4) > Static Structural (C5) > Solution (C6) > Axial > Figure

  • FIGURE 12 Model (C4) > Static Structural (C5) > Solution (C6) > hoop stress

  • TABLE 20 Model (C4) > Static Structural (C5) > Solution (C6) > hoop stress

    Time [s] Minimum [MPa] Maximum [MPa]

    0.2 -10.239 12.518

    0.4 -20.461 25.016

    0.7 -35.793 43.76

    1. -51.136 62.511

    FIGURE 13 Model (C4) > Static Structural (C5) > Solution (C6) > hoop stress > Figure

  • Material Data

    Structural Steel

    TABLE 21 Structural Steel > Constants

    Density 7.85e-006 kg mm^-3

    Coefficient of Thermal Expansion 1.2e-005 C^-1

    Specific Heat 4.34e+005 mJ kg^-1 C^-1

    Thermal Conductivity 6.05e-002 W mm^-1 C^-1

    Resistivity 1.7e-004 ohm mm

    TABLE 22 Structural Steel > Compressive Ultimate Strength

    Compressive Ultimate Strength MPa

    0

    TABLE 23 Structural Steel > Compressive Yield Strength

  • Compressive Yield Strength MPa

    250

    TABLE 24 Structural Steel > Tensile Yield Strength

    Tensile Yield Strength MPa

    250

    TABLE 25 Structural Steel > Tensile Ultimate Strength

    Tensile Ultimate Strength MPa

    460

    TABLE 26 Structural Steel > Isotropic Secant Coefficient of Thermal Expansion

    Reference Temperature C

    22

    TABLE 27 Structural Steel > Alternating Stress Mean Stress

    Alternating Stress MPa Cycles Mean Stress MPa

    3999 10 0

    2827 20 0

    1896 50 0

    1413 100 0

    1069 200 0

    441 2000 0

    262 10000 0

    214 20000 0

    138 1.e+005 0

    114 2.e+005 0

    86.2 1.e+006 0

    TABLE 28 Structural Steel > Strain-Life Parameters

    Strength Coefficient MPa

    Strength Exponent

    Ductility Coefficient

    Ductility Exponent

    Cyclic Strength Coefficient MPa

    Cyclic Strain Hardening Exponent

    920 -0.106 0.213 -0.47 1000 0.2

    TABLE 29 Structural Steel > Isotropic Elasticity

    Temperature C Young's Modulus MPa Poisson's Ratio Bulk Modulus MPa Shear Modulus MPa

    2.e+005 0.3 1.6667e+005 76923

    TABLE 30 Structural Steel > Isotropic Relative Permeability

    Relative Permeability

    10000


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