std::vector<double> getStateVariableInitialValues(const std::string& lameMaterialModelName,
const Teuchos::ParameterList& lameMaterialParameters) {
Teuchos::RCP<LameMaterial> materialModel = constructLameMaterialModel(lameMaterialModelName, lameMaterialParameters);
int numStateVariables = materialModel->getNumStateVars();
// Allocate workset space
std::vector<double> strainRate(6); // symmetric tensor5
std::vector<double> spin(3); // skew-symmetric tensor
std::vector<double> leftStretch(6); // symmetric tensor
std::vector<double> rotation(9); // full tensor
std::vector<double> stressOld(6); // symmetric tensor
std::vector<double> stressNew(6); // symmetric tensor
std::vector<double> stateOld(numStateVariables); // a single double for each state variable
std::vector<double> stateNew(numStateVariables); // a single double for each state variable
// \todo Set up scratch space for material models using getNumScratchVars() and setScratchPtr().
// Create the matParams structure, which is passed to LAME
Teuchos::RCP<LameMatParams> matp = Teuchos::rcp(new LameMatParams());
matp->nelements = 1;
matp->dt = 0.0;
matp->time = 0.0;
matp->strain_rate = &strainRate[0];
matp->spin = &spin[0];
matp->left_stretch = &leftStretch[0];
matp->rotation = &rotation[0];
matp->state_old = &stateOld[0];
matp->state_new = &stateNew[0];
matp->stress_old = &stressOld[0];
matp->stress_new = &stressNew[0];
LameMatProps props;
parameterListToMatProps(lameMaterialParameters, props);
// todo Check with Bill to see if props can be a null pointer (meaning no changes to the material properties).
materialModel->initialize(matp.get(), &props);
return stateOld;
}
void LamentStress<EvalT, Traits>::
evaluateFields(typename Traits::EvalData workset)
{
Teuchos::RCP<lament::matParams<ScalarT>> matp = Teuchos::rcp(new lament::matParams<ScalarT>());
// Get the old state data
Albany::MDArray oldDefGrad = (*workset.stateArrayPtr)[defGradName];
Albany::MDArray oldStress = (*workset.stateArrayPtr)[stressName];
int numStateVariables = (int)(this->lamentMaterialModelStateVariableNames.size());
// \todo Get actual time step for calls to LAMENT materials.
double deltaT = 1.0;
vector<ScalarT> strainRate(6); // symmetric tensor
vector<ScalarT> spin(3); // skew-symmetric tensor
vector<ScalarT> defGrad(9); // symmetric tensor
vector<ScalarT> leftStretch(6); // symmetric tensor
vector<ScalarT> rotation(9); // full tensor
vector<double> stressOld(6); // symmetric tensor
vector<ScalarT> stressNew(6); // symmetric tensor
vector<double> stateOld(numStateVariables); // a single scalar for each state variable
vector<double> stateNew(numStateVariables); // a single scalar for each state variable
// \todo Set up scratch space for material models using getNumScratchVars() and setScratchPtr().
// Create the matParams structure, which is passed to Lament
matp->nelements = 1;
matp->dt = deltaT;
matp->time = 0.0;
matp->strain_rate = &strainRate[0];
matp->spin = &spin[0];
matp->deformation_gradient = &defGrad[0];
matp->left_stretch = &leftStretch[0];
matp->rotation = &rotation[0];
matp->state_old = &stateOld[0];
matp->state_new = &stateNew[0];
matp->stress_old = &stressOld[0];
matp->stress_new = &stressNew[0];
// matp->dt_mat = std::numeric_limits<double>::max();
// matParams that still need to be added:
// matp->temp_old (temperature)
// matp->temp_new
// matp->sound_speed_old
// matp->sound_speed_new
// matp->volume
// scratch pointer
// function pointers (lots to be done here)
for (int cell=0; cell < (int)workset.numCells; ++cell) {
for (int qp=0; qp < (int)numQPs; ++qp) {
// std::cout << "QP: " << qp << std::endl;
// Fill the following entries in matParams for call to LAMENT
//
// nelements - number of elements
// dt - time step, this one is tough because Albany does not currently have a concept of time step for implicit integration
// time - current time, again Albany does not currently have a concept of time for implicit integration
// strain_rate - what Sierra calls the rate of deformation, it is the symmetric part of the velocity gradient
// spin - anti-symmetric part of the velocity gradient
// left_stretch - found as V in the polar decomposition of the deformation gradient F = VR
// rotation - found as R in the polar decomposition of the deformation gradient F = VR
// state_old - material state data for previous time step (material dependent, none for lament::Elastic)
// state_new - material state data for current time step (material dependent, none for lament::Elastic)
// stress_old - stress at previous time step
// stress_new - stress at current time step, filled by material model
//
// The total deformation gradient is available as field data
//
// The velocity gradient is not available but can be computed at the logarithm of the incremental deformation gradient divided by deltaT
// The incremental deformation gradient is computed as F_new F_old^-1
// JTO: here is how I think this will go (of course the first two lines won't work as is...)
// Intrepid2::Tensor<RealType> F = newDefGrad;
// Intrepid2::Tensor<RealType> Fn = oldDefGrad;
// Intrepid2::Tensor<RealType> f = F*Intrepid2::inverse(Fn);
// Intrepid2::Tensor<RealType> V;
// Intrepid2::Tensor<RealType> R;
// boost::tie(V,R) = Intrepid2::polar_left(F);
// Intrepid2::Tensor<RealType> Vinc;
// Intrepid2::Tensor<RealType> Rinc;
// Intrepid2::Tensor<RealType> logVinc;
// boost::tie(Vinc,Rinc,logVinc) = Intrepid2::polar_left_logV(f)
// Intrepid2::Tensor<RealType> logRinc = Intrepid2::log_rotation(Rinc);
// Intrepid2::Tensor<RealType> logf = Intrepid2::bch(logVinc,logRinc);
// Intrepid2::Tensor<RealType> L = (1.0/deltaT)*logf;
// Intrepid2::Tensor<RealType> D = Intrepid2::sym(L);
// Intrepid2::Tensor<RealType> W = Intrepid2::skew(L);
// and then fill data into the vectors below
// new deformation gradient (the current deformation gradient as computed in the current configuration)
Intrepid2::Tensor<ScalarT> Fnew( 3, defGradField,cell,qp,0,0);
// old deformation gradient (deformation gradient at previous load step)
Intrepid2::Tensor<ScalarT> Fold( oldDefGrad(cell,qp,0,0), oldDefGrad(cell,qp,0,1), oldDefGrad(cell,qp,0,2),
oldDefGrad(cell,qp,1,0), oldDefGrad(cell,qp,1,1), oldDefGrad(cell,qp,1,2),
oldDefGrad(cell,qp,2,0), oldDefGrad(cell,qp,2,1), oldDefGrad(cell,qp,2,2) );
// incremental deformation gradient
Intrepid2::Tensor<ScalarT> Finc = Fnew * Intrepid2::inverse(Fold);
// DEBUGGING //
//if(cell==0 && qp==0){
// std::cout << "Fnew(0,0) " << Fnew(0,0) << endl;
// std::cout << "Fnew(1,0) " << Fnew(1,0) << endl;
// std::cout << "Fnew(2,0) " << Fnew(2,0) << endl;
// std::cout << "Fnew(0,1) " << Fnew(0,1) << endl;
// std::cout << "Fnew(1,1) " << Fnew(1,1) << endl;
// std::cout << "Fnew(2,1) " << Fnew(2,1) << endl;
// std::cout << "Fnew(0,2) " << Fnew(0,2) << endl;
// std::cout << "Fnew(1,2) " << Fnew(1,2) << endl;
// std::cout << "Fnew(2,2) " << Fnew(2,2) << endl;
//}
// END DEBUGGING //
// left stretch V, and rotation R, from left polar decomposition of new deformation gradient
Intrepid2::Tensor<ScalarT> V(3), R(3), U(3);
boost::tie(V,R) = Intrepid2::polar_left(Fnew);
//V = R * U * transpose(R);
// DEBUGGING //
//if(cell==0 && qp==0){
// std::cout << "U(0,0) " << U(0,0) << endl;
// std::cout << "U(1,0) " << U(1,0) << endl;
// std::cout << "U(2,0) " << U(2,0) << endl;
// std::cout << "U(0,1) " << U(0,1) << endl;
// std::cout << "U(1,1) " << U(1,1) << endl;
// std::cout << "U(2,1) " << U(2,1) << endl;
// std::cout << "U(0,2) " << U(0,2) << endl;
// std::cout << "U(1,2) " << U(1,2) << endl;
// std::cout << "U(2,2) " << U(2,2) << endl;
// std::cout << "========\n";
// std::cout << "V(0,0) " << V(0,0) << endl;
// std::cout << "V(1,0) " << V(1,0) << endl;
// std::cout << "V(2,0) " << V(2,0) << endl;
// std::cout << "V(0,1) " << V(0,1) << endl;
// std::cout << "V(1,1) " << V(1,1) << endl;
// std::cout << "V(2,1) " << V(2,1) << endl;
// std::cout << "V(0,2) " << V(0,2) << endl;
// std::cout << "V(1,2) " << V(1,2) << endl;
// std::cout << "V(2,2) " << V(2,2) << endl;
// std::cout << "========\n";
// std::cout << "R(0,0) " << R(0,0) << endl;
// std::cout << "R(1,0) " << R(1,0) << endl;
// std::cout << "R(2,0) " << R(2,0) << endl;
// std::cout << "R(0,1) " << R(0,1) << endl;
// std::cout << "R(1,1) " << R(1,1) << endl;
// std::cout << "R(2,1) " << R(2,1) << endl;
// std::cout << "R(0,2) " << R(0,2) << endl;
// std::cout << "R(1,2) " << R(1,2) << endl;
// std::cout << "R(2,2) " << R(2,2) << endl;
//}
// END DEBUGGING //
// incremental left stretch Vinc, incremental rotation Rinc, and log of incremental left stretch, logVinc
Intrepid2::Tensor<ScalarT> Uinc(3), Vinc(3), Rinc(3), logVinc(3);
//boost::tie(Vinc,Rinc,logVinc) = Intrepid2::polar_left_logV(Finc);
boost::tie(Vinc,Rinc) = Intrepid2::polar_left(Finc);
//Vinc = Rinc * Uinc * transpose(Rinc);
logVinc = Intrepid2::log(Vinc);
// log of incremental rotation
Intrepid2::Tensor<ScalarT> logRinc = Intrepid2::log_rotation(Rinc);
// log of incremental deformation gradient
Intrepid2::Tensor<ScalarT> logFinc = Intrepid2::bch(logVinc, logRinc);
// velocity gradient
Intrepid2::Tensor<ScalarT> L = (1.0/deltaT)*logFinc;
// strain rate (a.k.a rate of deformation)
Intrepid2::Tensor<ScalarT> D = Intrepid2::sym(L);
// spin
Intrepid2::Tensor<ScalarT> W = Intrepid2::skew(L);
// load everything into the Lament data structure
strainRate[0] = ( D(0,0) );
strainRate[1] = ( D(1,1) );
strainRate[2] = ( D(2,2) );
strainRate[3] = ( D(0,1) );
strainRate[4] = ( D(1,2) );
strainRate[5] = ( D(2,0) );
spin[0] = ( W(0,1) );
spin[1] = ( W(1,2) );
spin[2] = ( W(2,0) );
leftStretch[0] = ( V(0,0) );
leftStretch[1] = ( V(1,1) );
leftStretch[2] = ( V(2,2) );
leftStretch[3] = ( V(0,1) );
leftStretch[4] = ( V(1,2) );
leftStretch[5] = ( V(2,0) );
rotation[0] = ( R(0,0) );
rotation[1] = ( R(1,1) );
rotation[2] = ( R(2,2) );
rotation[3] = ( R(0,1) );
rotation[4] = ( R(1,2) );
rotation[5] = ( R(2,0) );
rotation[6] = ( R(1,0) );
rotation[7] = ( R(2,1) );
rotation[8] = ( R(0,2) );
defGrad[0] = ( Fnew(0,0) );
defGrad[1] = ( Fnew(1,1) );
defGrad[2] = ( Fnew(2,2) );
defGrad[3] = ( Fnew(0,1) );
defGrad[4] = ( Fnew(1,2) );
defGrad[5] = ( Fnew(2,0) );
defGrad[6] = ( Fnew(1,0) );
defGrad[7] = ( Fnew(2,1) );
defGrad[8] = ( Fnew(0,2) );
stressOld[0] = oldStress(cell,qp,0,0);
stressOld[1] = oldStress(cell,qp,1,1);
stressOld[2] = oldStress(cell,qp,2,2);
stressOld[3] = oldStress(cell,qp,0,1);
stressOld[4] = oldStress(cell,qp,1,2);
stressOld[5] = oldStress(cell,qp,2,0);
// copy data from the state manager to the LAMENT data structure
for(int iVar=0 ; iVar<numStateVariables ; iVar++){
const std::string& variableName = this->lamentMaterialModelStateVariableNames[iVar]+"_old";
Albany::MDArray stateVar = (*workset.stateArrayPtr)[variableName];
stateOld[iVar] = stateVar(cell,qp);
}
// Make a call to the LAMENT material model to initialize the load step
this->lamentMaterialModel->loadStepInit(matp.get());
// Get the stress from the LAMENT material
// std::cout << "about to call lament->getStress()" << std::endl;
this->lamentMaterialModel->getStress(matp.get());
// std::cout << "after calling lament->getStress() 2" << std::endl;
// rotate to get the Cauchy Stress
Intrepid2::Tensor<ScalarT> lameStress( stressNew[0], stressNew[3], stressNew[5],
stressNew[3], stressNew[1], stressNew[4],
stressNew[5], stressNew[4], stressNew[2] );
Intrepid2::Tensor<ScalarT> cauchy = R * lameStress * transpose(R);
// DEBUGGING //
//if(cell==0 && qp==0){
// std::cout << "check strainRate[0] " << strainRate[0] << endl;
// std::cout << "check strainRate[1] " << strainRate[1] << endl;
// std::cout << "check strainRate[2] " << strainRate[2] << endl;
// std::cout << "check strainRate[3] " << strainRate[3] << endl;
// std::cout << "check strainRate[4] " << strainRate[4] << endl;
// std::cout << "check strainRate[5] " << strainRate[5] << endl;
//}
// END DEBUGGING //
// Copy the new stress into the stress field
for (int i(0); i < 3; ++i)
for (int j(0); j < 3; ++j)
stressField(cell,qp,i,j) = cauchy(i,j);
// stressField(cell,qp,0,0) = stressNew[0];
// stressField(cell,qp,1,1) = stressNew[1];
// stressField(cell,qp,2,2) = stressNew[2];
// stressField(cell,qp,0,1) = stressNew[3];
// stressField(cell,qp,1,2) = stressNew[4];
// stressField(cell,qp,2,0) = stressNew[5];
// stressField(cell,qp,1,0) = stressNew[3];
// stressField(cell,qp,2,1) = stressNew[4];
// stressField(cell,qp,0,2) = stressNew[5];
// copy state_new data from the LAMENT data structure to the corresponding state variable field
for(int iVar=0 ; iVar<numStateVariables ; iVar++)
this->lamentMaterialModelStateVariableFields[iVar](cell,qp) = stateNew[iVar];
// DEBUGGING //
//if(cell==0 && qp==0){
// std::cout << "stress(0,0) " << this->stressField(cell,qp,0,0) << endl;
// std::cout << "stress(1,1) " << this->stressField(cell,qp,1,1) << endl;
// std::cout << "stress(2,2) " << this->stressField(cell,qp,2,2) << endl;
// std::cout << "stress(0,1) " << this->stressField(cell,qp,0,1) << endl;
// std::cout << "stress(1,2) " << this->stressField(cell,qp,1,2) << endl;
// std::cout << "stress(0,2) " << this->stressField(cell,qp,0,2) << endl;
// std::cout << "stress(1,0) " << this->stressField(cell,qp,1,0) << endl;
// std::cout << "stress(2,1) " << this->stressField(cell,qp,2,1) << endl;
// std::cout << "stress(2,0) " << this->stressField(cell,qp,2,0) << endl;
// //}
// // END DEBUGGING //
}
}
}