foam-extend4.1-coherent-io/applications/solvers/solidMechanics/elasticIncrSolidFoam/writeFields.H

if (runTime.outputTime())
{
    volScalarField epsilonEq
    (
        IOobject
        (
            "epsilonEq",
            runTime.timeName(),
            mesh,
            IOobject::NO_READ,
            IOobject::AUTO_WRITE
        ),
        sqrt((2.0/3.0)*magSqr(dev(epsilon)))
    );

    Info<< "Max epsilonEq = " << max(epsilonEq).value() << endl;

    volScalarField sigmaEq
    (
        IOobject
        (
            "sigmaEq",
            runTime.timeName(),
            mesh,
            IOobject::NO_READ,
            IOobject::AUTO_WRITE
        ),
        sqrt((3.0/2.0)*magSqr(dev(sigma)))
    );

    Info<< "Max sigmaEq = " << max(sigmaEq).value() << endl;

    runTime.write();
}