int main (){
unsigned int i;
if(init_hardware("hardware.ini") == 0) {
fprintf(stderr, "Error in hardware initialization\n");
exit(EXIT_FAILURE);
}
/* Interrupt handlers */
for(i=0; i<16; i++)
IRQVECTOR[i] = empty_it;
/* Allows all IT */
_mask(1);
chk_hda();
mbrvol(4,2,1);
mbrvol(6,5,4);
dvol();
return 1;
}
void FE2FluidMaterial :: giveVolumetricDeviatoricStiffness(FloatArray &answer, MatResponseMode mode, GaussPoint *gp, TimeStep *tStep)
{
FE2FluidMaterialStatus *ms = static_cast<FE2FluidMaterialStatus*> (this->giveStatus(gp));
ms->computeTangents(tStep);
if ( mode == TangentStiffness ) {
answer = ms->giveVolumetricDeviatoricTangent();
#ifdef DEBUG_TANGENT
// Numerical ATS for debugging
FloatArray tempStrain(3); tempStrain.zero();
FloatArray sig, strain;
double epspvol, epspvol11, epspvol22, epspvol12, pressure = 0.0;
double h = 1.0; // Linear problem, size of this doesn't matter.
computeDeviatoricStressVector (sig, epspvol, gp, tempStrain, pressure, tStep);
strain = tempStrain; strain.at(1) += h;
computeDeviatoricStressVector(sig, epspvol11, gp, strain, pressure, tStep);
strain = tempStrain; strain.at(2) += h;
computeDeviatoricStressVector(sig, epspvol22, gp, strain, pressure, tStep);
strain = tempStrain; strain.at(3) += h;
computeDeviatoricStressVector(sig, epspvol12, gp, strain, pressure, tStep);
FloatArray dvol(3);
dvol.at(1) = (epspvol11 - epspvol)/h;
dvol.at(2) = (epspvol22 - epspvol)/h;
dvol.at(3) = (epspvol12 - epspvol)/h;
dvol.at(1) += 1.0;
dvol.at(2) += 1.0;
printf("Analytical volumetric deviatoric tangent = "); answer.printYourself();
printf("Numerical volumetric deviatoric tangent = "); dvol.printYourself();
dvol.subtract(answer);
double norm = dvol.computeNorm();
if (norm > answer.computeNorm()*DEBUG_ERR && norm > 0.0) {
OOFEM_ERROR("Error in volumetric deviatoric tangent");
}
#endif
} else {
OOFEM_ERROR("Mode not implemented");
}
}
void FE2FluidMaterial :: giveStiffnessMatrices(FloatMatrix &dsdd, FloatArray &dsdp, FloatArray &dedd, double &dedp,
MatResponseMode mode, GaussPoint *gp, TimeStep *tStep)
{
FE2FluidMaterialStatus *ms = static_cast< FE2FluidMaterialStatus * >( this->giveStatus(gp) );
ms->computeTangents(tStep);
if ( mode == TangentStiffness ) {
dsdd = ms->giveDeviatoricTangent();
dsdp = ms->giveDeviatoricPressureTangent();
dedd = ms->giveVolumetricDeviatoricTangent();
dedp = ms->giveVolumetricPressureTangent();
#if 0
// Numerical ATS for debugging
FloatMatrix numericalATS(6, 6);
FloatArray dsig;
FloatArray tempStrain(6);
tempStrain.zero();
FloatArray sig, strain, sigPert;
double epspvol;
computeDeviatoricStressVector(sig, epspvol, gp, tempStrain, 0., tStep);
double h = 0.001; // Linear problem, size of this doesn't matter.
for ( int k = 1; k <= 6; ++k ) {
strain = tempStrain;
strain.at(k) += h;
double tmp = strain.at(1) + strain.at(2) + strain.at(3);
strain.at(1) -= tmp/3.0;
strain.at(2) -= tmp/3.0;
strain.at(3) -= tmp/3.0;
strain.printYourself();
computeDeviatoricStressVector(sigPert, epspvol, gp, strain, 0., tStep);
sigPert.printYourself();
dsig.beDifferenceOf(sigPert, sig);
numericalATS.setColumn(dsig, k);
}
numericalATS.times(1. / h);
printf("Analytical deviatoric tangent = ");
dsdd.printYourself();
printf("Numerical deviatoric tangent = ");
numericalATS.printYourself();
numericalATS.subtract(dsdd);
double norm = numericalATS.computeFrobeniusNorm();
if ( norm > dsdd.computeFrobeniusNorm() * DEBUG_ERR && norm > 0.0 ) {
OOFEM_ERROR("Error in deviatoric tangent");
}
#endif
#if 0
// Numerical ATS for debugging
FloatArray strain(3);
strain.zero();
FloatArray sig, sigh;
double epspvol, pressure = 0.0;
double h = 1.00; // Linear problem, size of this doesn't matter.
computeDeviatoricStressVector(sig, epspvol, gp, strain, pressure, tStep);
computeDeviatoricStressVector(sigh, epspvol, gp, strain, pressure + h, tStep);
FloatArray dsigh;
dsigh.beDifferenceOf(sigh, sig);
dsigh.times(1 / h);
printf("Analytical deviatoric pressure tangent = ");
dsdp.printYourself();
printf("Numerical deviatoric pressure tangent = ");
dsigh.printYourself();
dsigh.subtract(dsdp);
double norm = dsigh.computeNorm();
if ( norm > dsdp.computeNorm() * DEBUG_ERR && norm > 0.0 ) {
OOFEM_ERROR("Error in deviatoric pressure tangent");
}
#endif
#if 0
// Numerical ATS for debugging
FloatArray tempStrain(3);
tempStrain.zero();
FloatArray sig, strain;
double epspvol, epspvol11, epspvol22, epspvol12, pressure = 0.0;
double h = 1.0; // Linear problem, size of this doesn't matter.
computeDeviatoricStressVector(sig, epspvol, gp, tempStrain, pressure, tStep);
strain = tempStrain;
strain.at(1) += h;
computeDeviatoricStressVector(sig, epspvol11, gp, strain, pressure, tStep);
strain = tempStrain;
strain.at(2) += h;
computeDeviatoricStressVector(sig, epspvol22, gp, strain, pressure, tStep);
strain = tempStrain;
strain.at(3) += h;
computeDeviatoricStressVector(sig, epspvol12, gp, strain, pressure, tStep);
FloatArray dvol(3);
dvol.at(1) = ( epspvol11 - epspvol ) / h;
dvol.at(2) = ( epspvol22 - epspvol ) / h;
dvol.at(3) = ( epspvol12 - epspvol ) / h;
dvol.at(1) += 1.0;
dvol.at(2) += 1.0;
printf("Analytical volumetric deviatoric tangent = ");
dedd.printYourself();
printf("Numerical volumetric deviatoric tangent = ");
dvol.printYourself();
dvol.subtract(dedd);
double norm = dvol.computeNorm();
if ( norm > dedd.computeNorm() * DEBUG_ERR && norm > 0.0 ) {
OOFEM_ERROR("Error in volumetric deviatoric tangent");
}
#endif
#if 0
// Numerical ATS for debugging
FloatArray strain(3);
strain.zero();
FloatArray sig;
double epspvol, epspvolh, pressure = 0.0;
double h = 1.0; // Linear problem, size of this doesn't matter.
computeDeviatoricStressVector(sig, epspvol, gp, strain, pressure, tStep);
computeDeviatoricStressVector(sig, epspvolh, gp, strain, pressure + h, tStep);
double dvol = -( epspvolh - epspvol ) / h;
printf("Analytical volumetric pressure tangent = %e\n", dedp);
printf("Numerical volumetric pressure tangent = %e\n", dvol);
double norm = fabs(dvol - dedp);
if ( norm > fabs(dedp) * DEBUG_ERR && norm > 0.0 ) {
OOFEM_ERROR("Error in volumetric pressure tangent");
}
#endif
} else {
OOFEM_ERROR("Mode not implemented");
}
}
