CFD Online Discussion Forums - [solidMechanics] a defect of solidMechanics in foam-extend-3.0

hi,
I found a defect of solidMechanics in foam-extend-3.0 ! :confused:
for example , I created a myelasticNonLinULSolidFoam just changing the elasticNonLinULSolidFoam
from

Code:

    Info<< "Reading accumulated displacement field U\n" << endl;

    volVectorField U

    (

        IOobject

        (

            "U",

            runTime.timeName(),

            mesh,

            IOobject::READ_IF_PRESENT,

            IOobject::AUTO_WRITE

        ),

        mesh,

        dimensionedVector("zero", dimLength, vector::zero)

    );

Code:

    Info<< "Reading accumulated displacement field U\n" << endl;

    volVectorField Usolid

    (

        IOobject

        (

            "Usolid",

            runTime.timeName(),

            mesh,

            IOobject::READ_IF_PRESENT,

            IOobject::AUTO_WRITE

        ),

        mesh,

        dimensionedVector("zero", dimLength, vector::zero)

    );

of course I did all the necessary changes which means replacing the U by Usolid at other place .
then, wmake to get the myelasticNonLinULSolidFoam ! and I created a case that replace U by Usolid too !
when we use this new solver to run a case which needs to use the accumulated displacement field(for example use the timeVaringFixedDisplacement boundary) , it will be error

Code:

Starting time loop



Time = 0.01







--> FOAM FATAL ERROR: 



    request for volVectorField U from objectRegistry region0 failed

    available objects of type volVectorField are



5

(

Usolid

DUPrevIter

DU

divDSigmaLargeStrainExp

divDSigmaExp

)





    From function objectRegistry::lookupObject<Type>(const word&) const

    in file /home/sxh/foam/foam-extend-3.0/src/foam/lnInclude/objectRegistryTemplates.C at line 139.



FOAM aborting

we know that the "Usolid" should be the "volVectorField U from objectRegistry region0" , and the "Usolid" is a available object !:eek:
actually , I first found this problem in the icoFsiElasticNonLinULSolidFoam which use Usolid instead of U in solid part , for there is a U in fluid part !

I don't know what is wrong . maybe it is a bug ?
what do you think ?

thanks