[thejavarma9]

Hi!
I have a case which I have to apply time varying fixed pressure condition instead of traction.

So i would like to know what is the type of boundary condition to be applied for that case. As from the tutorial I can see



right
{
type timeVaryingSolidTraction; // I want this in terms of Pressure
outOfBounds clamp;
nonLinear off;
fileName "$FOAM_CASE/constant/timeVsRightTraction";
}




with regards,
Theja

[bigphil]

Hi Theja,

The timeVaryingSolidTraction boundary condition only allows the traction to vary in time, not the pressure.

You could create a new boundary condition with the required functionality or alternatively you can use solidTraction in solids4foam, which allows both traction and pressure to be time-varying e.g.

    yourPatchName
    {
        type    solidTraction;
        pressureSeries
        {
            fileName    "$FOAM_CASE/costant/timeVsPressure";
            outOfBounds clamp;
        }
        traction uniform (0 0 0);
        value    uniform (0 0 0);
    }

or

    yourPatchName
    {
        type    solidTraction;
        pressure uniform 0;
        tractionSeries
        {
            fileName    "$FOAM_CASE/costant/timeVsTraction";
            outOfBounds clamp;
        }
        value    uniform (0 0 0);
    }

or

    yourPatchName
    {
        type    solidTraction;
        pressureSeries
        {
            fileName    "$FOAM_CASE/costant/timeVsPressure";
            outOfBounds clamp;
        }
        tractionSeries
        {
            fileName    "$FOAM_CASE/costant/timeVsTraction";
            outOfBounds clamp;
        }
        value    uniform (0 0 0);
    }

If you like, PM me your email address and I will add you to the solids4foam git repository.

Philip