OpenFOAM-6/applications/test/rigidBodyDynamics/spring

solver
{
    type Newmark;
}

bodies
{
    weight
    {
        type            rigidBody;
        mass            9.6;
        centreOfMass    (0 0 0);
        inertia         (0.1052 0 0 0.1052 0 0.1778);
        parent          root;
        transform       (1 0 0 0 1 0 0 0 1) (0 0 0);
        joint
        {
            type            Pz;
        }
    }
}

restraints
{
    spring
    {
        type            linearSpring;
        body            weight;
        anchor          (0 0 0.5);
        refAttachmentPt (0 0 0);
        stiffness       5000;
        damping         50;
        restLength      0.4;
    }
}

g (0 0 0);

deltaT 0.002;

// It is necessary to iterate for the Newmark solver
nIter 2;

endTime 4;