fixedDisplacementZeroShearFvPatchVectorField

Description

The fixedDisplacementZeroShear boundary condition fixes the displacement component normal to the patch, while the shear traction is set to zero. This fvPatchField is similar to a symmetry boundary condition but allows the material to slide parallel to the patch.

Optionally, the fixed normal displacement can be specified as a time series.

Note

This fvPatchField is taken from solids4Foam library.

Options

The fixedDisplacementZeroShear fvPatchField can be selected in the patch subdictionary inside the boundaryField subdictionary of the displacement field.

Parameters in the patch subdictionary for fixedDisplacementZeroShear:

displacementSeries	A subdictionary specifying the time series of displacement values.
value	Only used if `displacementSeries` is not present, it sets the fixed displacement value (constant in time).

Parameters in the subdictionary displacementSeries:

type	Specifies the type of the series, e.g., `table`.
values	A list of time-value pairs defining the displacement series. The displacement is specified in vector form for each time point.
outOfBounds	Optional keyword to handle values outside the defined time range. Possible values: `clamp` or `extrapolate`. Default: `clamp`.
interpolationScheme	Optional keyword to define the interpolation method between time points. Possible values: `linear` or `step`. Default: `linear`.

Warning

Displacement values must always be provided as vectors, but only the normal component (normal to the patch) will be applied.

Usage

To apply the fixedDisplacementZeroShear boundary condition to a given patch, the following example can be used as a template:

cladOuter
{
    type            fixedDisplacementZeroShear;

    // For time-dependent series
    displacementSeries
    {
        type    table;

        values
        (
            (0.0 (0 0 0))
            (100.0 (0 0 0.1))
        );

        outOfBounds         clamp;     // optional out-of-bounds handling
        interpolationScheme linear;    // optional interpolation method
    }

    // // Alternatively, for a constant normal displacement
    // value           uniform (0 0 0.1);
}