LaRC05 damage

The LaRC05 damage 3D model predicts polymer-matrix fiber-reinforced composites materials. It is primarily intended for use with unidirectional fiber-reinforced composite materials and takes into account four different failure modes: matrix cracking, fiber kinking, fiber splitting, and fiber tension.

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Damage Initiation for Fiber-Reinforced Composites
  1. From the menu bar in the Edit Material dialog box, select Mechanical Damage for Fiber-Reinforced Composites LaRC05 Damage .

    (For information on displaying the Edit Material dialog box, see Creating or editing a material.)

  2. Enter the Tolerance.

    The value should be equal to the tolerance within which the damage initiation criterion must be satisfied.

  3. To define material damage data that depend on temperature, toggle on Use temperature-dependent data.

    A column labeled Temp appears in the Data table.

  4. To define behavior data that depend on field variables, click the arrows to the right of the Number of field variables field to increase or decrease the number of field variables.

    Field variable columns appear in the Data table.

  5. Enter the damage parameters in the Data table:

    Longitudinal Tensile Strength

    Longitudinal tensile strength.

    Longitudinal Compressive Strength

    Longitudinal compressive strength.

    Transverse Tensile Strength

    Transverse tensile strength.

    Transverse Compressive Strength

    Transverse compressive strength.

    In Plane Shear Strength

    In Plane shear strength.

    Fracture plane angle for pure compression

    Fracture plane angle for pure compression.

    Misalignment angle at failure for pure compression

    Misalignment angle at failure for pure compression.

    Transverse Shear Strength

    Transverse shear strength.

    Longitudinal shear friction coefficient

    Longitudinal shear friction coefficient.

    Transverse shear friction coefficient

    Transverse shear friction coefficient.

    Temp

    Temperature, θ .

    Field n

    Predefined field variables.

    You might have to expand the dialog box to see all the columns in the Data table. For detailed information on how to enter data, see Entering tabular data.

  6. Select Suboptions Damage Evolution to define the material degradation that takes place once damage begins.

    For more information, see Damage evolution.

  7. Select Suboptions Damage Stabilization to enter viscous coefficients and improve the model convergence.

    For more information, see Damage stabilization.

  8. Click OK to exit the material editor.