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/*=========================================================================
*
* Copyright Insight Software Consortium
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*=========================================================================*/
#include "itkFEMSolver.h"
#include "itkFEMElement2DC0LinearLineStress.h"
int itkFEMLoadBCMFCTestUser(int argc, char *[])
{
if(argc < 1)
{
std::cerr << "Missing Spatial Object Filename" << std::endl;
return EXIT_FAILURE;
}
//Need to register default FEM object types,
//and setup SpatialReader to recognize FEM types
//which is all currently done as a HACK in
//the initializaiton of the itk::FEMFactoryBase::GetFactory()
itk::FEMFactoryBase::GetFactory()->RegisterDefaultTypes();
itk::FEMFactoryBase::RegisterDefaultTypes();
typedef itk::fem::Solver<2> Solver2DType;
Solver2DType::Pointer solver = Solver2DType::New();
typedef itk::fem::FEMObject<2> FEMObjectType;
FEMObjectType::Pointer femObject = FEMObjectType::New();
itk::fem::LinearSystemWrapperVNL vnlSolver;
vnlSolver.SetMaximumNonZeroValuesInMatrix(1000, 1000);
typedef itk::fem::Element::Node NodeType;
NodeType::Pointer n1;
itk::fem::Element::VectorType pt(2);
n1 = NodeType::New();
pt[0] = 0.0;
pt[1] = 0.0;
n1->SetCoordinates(pt);
n1->SetGlobalNumber(0);
femObject->AddNextNode(n1.GetPointer());
n1 = NodeType::New();
pt[0] = 1500.0;
pt[1] = 0.0;
n1->SetCoordinates(pt);
n1->SetGlobalNumber(1);
femObject->AddNextNode(n1.GetPointer());
n1 = NodeType::New();
pt[0] = 3000.0;
pt[1] = 0.0;
n1->SetCoordinates(pt);
n1->SetGlobalNumber(2);
femObject->AddNextNode(n1.GetPointer());
n1 = NodeType::New();
pt[0] = 3000.0;
pt[1] = 3000.0;
n1->SetCoordinates(pt);
n1->SetGlobalNumber(3);
femObject->AddNextNode(n1.GetPointer());
n1 = NodeType::New();
pt[0] = 0.0;
pt[1] = 4500.0;
n1->SetCoordinates(pt);
n1->SetGlobalNumber(4);
femObject->AddNextNode(n1.GetPointer());
itk::fem::MaterialLinearElasticity::Pointer m;
m = itk::fem::MaterialLinearElasticity::New();
m->SetGlobalNumber(0); /* Global number of the material */
m->SetYoungsModulus(200000000000.0); /* Young modulus */
m->SetPoissonsRatio(0.3);
m->SetCrossSectionalArea(2000.0); /* Crossection area */
m->SetMomentOfInertia(1.0); /* Momemt of inertia */
femObject->AddNextMaterial(m);
m = itk::fem::MaterialLinearElasticity::New();
m->SetGlobalNumber(1); /* Global number of the material */
m->SetYoungsModulus(200000.0); /* Young modulus */
m->SetPoissonsRatio(0.3);
m->SetCrossSectionalArea(1200.0); /* Crossection area */
m->SetMomentOfInertia(1.0); /* Momemt of inertia */
femObject->AddNextMaterial(m);
m = itk::fem::MaterialLinearElasticity::New();
m->SetGlobalNumber(2); /* Global number of the material */
m->SetYoungsModulus(70000.0); /* Young modulus */
m->SetPoissonsRatio(0.3);
m->SetCrossSectionalArea(900.0); /* Crossection area */
m->SetMomentOfInertia(1.0); /* Momemt of inertia */
femObject->AddNextMaterial(m);
itk::fem::Element2DC0LinearLineStress::Pointer e1;
e1 = itk::fem::Element2DC0LinearLineStress::New();
e1->SetGlobalNumber(0);
e1->SetNode( 0, femObject->GetNode(0) );
e1->SetNode( 1, femObject->GetNode(1) );
if ( dynamic_cast<itk::fem::MaterialLinearElasticity *>( femObject->GetMaterial(0).GetPointer()))
{
e1->SetMaterial( dynamic_cast<itk::fem::MaterialLinearElasticity *>( femObject->GetMaterial(0).GetPointer() ) );
}
femObject->AddNextElement( e1.GetPointer());
e1 = itk::fem::Element2DC0LinearLineStress::New();
e1->SetGlobalNumber(1);
e1->SetNode( 0, femObject->GetNode(1) );
e1->SetNode( 1, femObject->GetNode(2) );
if (dynamic_cast<itk::fem::MaterialLinearElasticity *>( femObject->GetMaterial(0).GetPointer() ))
{
e1->SetMaterial( dynamic_cast<itk::fem::MaterialLinearElasticity *>( femObject->GetMaterial(0).GetPointer() ) );
}
femObject->AddNextElement( e1.GetPointer());
e1 = itk::fem::Element2DC0LinearLineStress::New();
e1->SetGlobalNumber(2);
e1->SetNode( 0, femObject->GetNode(1) );
e1->SetNode( 1, femObject->GetNode(3) );
if (dynamic_cast<itk::fem::MaterialLinearElasticity *>( femObject->GetMaterial(2).GetPointer() ))
{
e1->SetMaterial( dynamic_cast<itk::fem::MaterialLinearElasticity *>( femObject->GetMaterial(2).GetPointer() ) );
}
femObject->AddNextElement( e1.GetPointer());
e1 = itk::fem::Element2DC0LinearLineStress::New();
e1->SetGlobalNumber(3);
e1->SetNode( 0, femObject->GetNode(0) );
e1->SetNode( 1, femObject->GetNode(4) );
if ( dynamic_cast<itk::fem::MaterialLinearElasticity *>( femObject->GetMaterial(1).GetPointer()))
{
e1->SetMaterial( dynamic_cast<itk::fem::MaterialLinearElasticity *>( femObject->GetMaterial(1).GetPointer() ) );
}
femObject->AddNextElement( e1.GetPointer());
itk::fem::LoadBC::Pointer l1;
l1 = itk::fem::LoadBC::New();
l1->SetGlobalNumber(0);
l1->SetElement( femObject->GetElement(2) );
l1->SetDegreeOfFreedom(2);
l1->SetValue( vnl_vector<double>(1, 0.0) );
femObject->AddNextLoad( l1 );
l1 = itk::fem::LoadBC::New();
l1->SetGlobalNumber(1);
l1->SetElement( femObject->GetElement(2) );
l1->SetDegreeOfFreedom(3);
l1->SetValue( vnl_vector<double>(1, 0.0) );
femObject->AddNextLoad( l1 );
l1 = itk::fem::LoadBC::New();
l1->SetGlobalNumber(2);
l1->SetElement( femObject->GetElement(3) );
l1->SetDegreeOfFreedom(2);
l1->SetValue( vnl_vector<double>(1, 0.0) );
femObject->AddNextLoad( l1 );
l1 = itk::fem::LoadBC::New();
l1->SetGlobalNumber(3);
l1->SetElement( femObject->GetElement(3) );
l1->SetDegreeOfFreedom(3);
l1->SetValue( vnl_vector<double>(1, 0.0) );
femObject->AddNextLoad( l1 );
itk::fem::LoadNode::Pointer l2;
l2 = itk::fem::LoadNode::New();
l2->SetGlobalNumber(4);
l2->SetElement( femObject->GetElement(1) );
l2->SetNode(0);
vnl_vector<double> F(2);
F[0] = 0;
F[1] = 30000;
l2->SetForce(F);
femObject->AddNextLoad( l2 );
itk::fem::LoadBCMFC::Pointer bcmfc = itk::fem::LoadBCMFC::New();
bcmfc->SetGlobalNumber(5);
// itk::fem::LoadBCMFC bcmfc;
bcmfc->AddLeftHandSideTerm( itk::fem::LoadBCMFC::MFCTerm(femObject->GetElement(0).GetPointer(), 1, 1) );
bcmfc->AddLeftHandSideTerm( itk::fem::LoadBCMFC::MFCTerm(femObject->GetElement(1).GetPointer(), 3, -1) );
bcmfc->AddRightHandSideTerm(0.0);
femObject->AddNextLoad( bcmfc );
femObject->FinalizeMesh();
solver->SetInput( femObject );
solver->Update();
int numDOF = femObject->GetNumberOfDegreesOfFreedom();
vnl_vector<float> soln(numDOF);
float expectedResult[10] = {0.283525f, 0.0f, 0.283525f, 1.70115f, 0.283525f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f};
bool foundError = false;
for( int i = 0; i < numDOF; i++ )
{
soln[i] = solver->GetSolution(i);
// std::cout << "Solution[" << i << "]:" << soln[i] << std::endl;
if( std::fabs(expectedResult[i] - soln[i]) > 0.0001 )
{
std::cout << "ERROR: Index " << i << ". Expected " << expectedResult[i] << " Solution " << soln[i] << std::endl;
foundError = true;
}
}
if( foundError )
{
std::cout << "Test FAILED!" << std::endl;
return EXIT_FAILURE;
}
// to write the deformed mesh
// Testing the fe mesh validity
/* typedef itk::FEMObjectSpatialObject<2> FEMObjectSpatialObjectType;
FEMObjectSpatialObjectType::Pointer femSODef = FEMObjectSpatialObjectType::New();
femSODef->SetFEMObject(solver->GetOutput());
typedef itk::FEMSpatialObjectWriter<2> FEMSpatialObjectWriterType;
typedef FEMSpatialObjectWriterType::Pointer FEMSpatialObjectWriterPointer;
FEMSpatialObjectWriterPointer SpatialWriter = FEMSpatialObjectWriterType::New();
SpatialWriter->SetInput(femSODef);
SpatialWriter->SetFileName( argv[2] );
SpatialWriter->Update();*/
std::cout << "Test PASSED!" << std::endl;
return EXIT_SUCCESS;
}
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