void ConvDiffAnisotropic2DLaw::CalculateStress(const Properties& props,
const Vector& strainVector,
Vector& stressVector)
{
double CONDUCTIVITY_11_11 = props[CONDUCTIVITY_1111];
double CONDUCTIVITY_11_22 = props[CONDUCTIVITY_1122];
double CONDUCTIVITY_22_11 = props[CONDUCTIVITY_2211];
double CONDUCTIVITY_22_22 = props[CONDUCTIVITY_2222];
SizeType strain_size = strainVector.size();
Matrix constitutiveMatrix(strain_size, strain_size, false);
constitutiveMatrix(0, 0) = CONDUCTIVITY_11_11;
constitutiveMatrix(0, 1) = CONDUCTIVITY_11_22;
constitutiveMatrix(1, 0) = CONDUCTIVITY_22_11;
constitutiveMatrix(1, 1) = CONDUCTIVITY_22_22;
mStressVector.clear();
mStressVector = prod(constitutiveMatrix, strainVector - m_init_gradT);
// mStressVector(0) = conductivity*(strainVector(0) - m_init_gradT(0));
// mStressVector(1) = conductivity*(strainVector(1) - m_init_gradT(1));
noalias(stressVector) = mStressVector;
}
void ScalarDamageInterface2DLaw::CalculateMaterialResponseCauchy (Parameters& rValues)
{
const Properties& props = rValues.GetMaterialProperties();
const Vector& strainVector = rValues.GetStrainVector();
Vector& stressVector = rValues.GetStressVector();
Matrix& constitutiveMatrix = rValues.GetConstitutiveMatrix();
Flags& Options = rValues.GetOptions();
bool compute_constitutive_tensor = Options.Is(COMPUTE_CONSTITUTIVE_TENSOR);
bool compute_stress = Options.Is(COMPUTE_STRESS) || compute_constitutive_tensor;
#ifdef INTERF_DAM_2D_IMPLEX
this->m_strain = rValues.GetStrainVector();
#endif // INTERF_DAM_2D_IMPLEX
SizeType size = GetStrainSize();
if(compute_stress)
if(stressVector.size() != size)
stressVector.resize(size, false);
if(compute_constitutive_tensor)
if(constitutiveMatrix.size1() != size || constitutiveMatrix.size2() != size)
constitutiveMatrix.resize(size, size, false);
CalculationData data;
InitializeCalculationData( props, rValues.GetElementGeometry(), strainVector, rValues.GetProcessInfo(), data );
CalculateElasticStressVector( data, strainVector );
#ifdef INTERF_DAM_2D_IMPLEX
double time_factor = 0.0;
if(m_dTime_n_converged>0.0) time_factor = data.dTime/m_dTime_n_converged;
m_dTime_n = data.dTime;
mK1 = mK1_converged + time_factor * (mK1_converged-mK1_converged_old);
mK2 = mK2_converged + time_factor * (mK2_converged-mK2_converged_old);
if(mK1 > 0.0)
{
data.D1 = 1.0 - data.Ft/(mK1+data.Ft) * std::exp( -data.Ft/(data.GI*data.Kn) * mK1 );
data.D1 = std::max( std::min( data.D1, 1.0 ), 0.0 );
}
if(mK2 > 0.0)
{
data.D2 = 1.0 - data.C0/(mK2+data.C0) * std::exp( -data.C0/data.GII/data.Kt * mK2 );
data.D2 = std::max( std::min( data.D2, 1.0 ), 0.0 );
}
#ifdef USE_AS_BRICK_INTERFACE
data.D2 = 0.0;
if(data.D1 > 0.99)
data.D2 = 1.0;
#endif // USE_AS_BRICK_INTERFACE
#else
CalculateEquivalentMeasure( data );
UpdateDamage( data );
#endif // INTERF_DAM_2D_IMPLEX
mD1 = data.D1;
mD2 = data.D2;
if( compute_stress )
CalculateStress( data, stressVector );
//**********************************************
double sig_n = stressVector(1);
double sig_t = std::abs(stressVector(0));
double C0_d = (1.0 - mD2)*data.C0;
mYieldValue = sig_n*data.Fs + sig_t - C0_d;
//**********************************************
if( compute_constitutive_tensor )
{
if(data.ForceSecant) {
constitutiveMatrix.clear();
constitutiveMatrix(0,0) = data.Kt*(1.0-mD2);
constitutiveMatrix(1,1) = data.Kn;
if(stressVector(1) > 0.0) {
constitutiveMatrix(1,1) *= (1.0-mD1);
}
}
else {
CalculateConstitutiveMatrix( data, strainVector, stressVector, constitutiveMatrix );
}
}
}
