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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 "itkFEMSpatialObjectWriter.h"
#include "itkFEMElement2DC0LinearQuadrilateralStress.h"
int itkFEMElement2DC0LinearQuadrilateralStressTest(int argc, char *argv[])
{
if(argc < 1)
{
std::cerr << "Missing Spatial Object Filename" << std::endl;
return EXIT_FAILURE;
}
itk::FEMFactoryBase::RegisterDefaultTypes();
const unsigned int Dimension = 2;
typedef itk::fem::Solver<Dimension> Solver2DType;
Solver2DType::Pointer solver = Solver2DType::New();
typedef itk::fem::FEMObject<Dimension> FEMObjectType;
FEMObjectType::Pointer femObject = FEMObjectType::New();
typedef itk::fem::Element::Node NodeType;
NodeType::Pointer n1;
n1 = NodeType::New();
itk::fem::Element::VectorType pt(Dimension);
pt[0] = 2.0;
pt[1] = 2.0;
n1->SetCoordinates(pt);
femObject->AddNextNode(n1);
n1 = NodeType::New();
pt[0] = 8.0;
pt[1] = 3.0;
n1->SetCoordinates(pt);
femObject->AddNextNode(n1);
n1 = NodeType::New();
pt[0] = 8.0;
pt[1] = 6.0;
n1->SetCoordinates(pt);
femObject->AddNextNode(n1);
n1 = NodeType::New();
pt[0] = 2.0;
pt[1] = 9.0;
n1->SetCoordinates(pt);
femObject->AddNextNode(n1);
femObject->RenumberNodeContainer();
itk::fem::MaterialLinearElasticity::Pointer m;
m = itk::fem::MaterialLinearElasticity::New();
m->SetGlobalNumber(0); /* Global number of the material */
m->SetYoungsModulus(30000000.0); /* Young modulus */
m->SetPoissonsRatio(0.3);
m->SetCrossSectionalArea(.0); /* Crossection area */
m->SetMomentOfInertia(1.0); /* Momemt of inertia */
femObject->AddNextMaterial(m);
itk::fem::Element2DC0LinearQuadrilateralStress::Pointer e1;
e1 = itk::fem::Element2DC0LinearQuadrilateralStress::New();
e1->SetGlobalNumber(0);
e1->SetNode( 0, femObject->GetNode(0) );
e1->SetNode( 1, femObject->GetNode(1) );
e1->SetNode( 2, femObject->GetNode(2) );
e1->SetNode( 3, femObject->GetNode(3) );
e1->SetMaterial( femObject->GetMaterial(0) );
femObject->AddNextElement( e1.GetPointer() );
itk::fem::LoadBC::Pointer l1;
l1 = itk::fem::LoadBC::New();
l1->SetGlobalNumber(0);
l1->SetElement( femObject->GetElement(0) );
l1->SetDegreeOfFreedom(0);
l1->SetValue( vnl_vector<double>(1, 0.0) );
femObject->AddNextLoad( l1 );
l1 = itk::fem::LoadBC::New();
l1->SetGlobalNumber(1);
l1->SetElement( femObject->GetElement(0) );
l1->SetDegreeOfFreedom(1);
l1->SetValue( vnl_vector<double>(1, 0.0) );
femObject->AddNextLoad( l1 );
l1 = itk::fem::LoadBC::New();
l1->SetGlobalNumber(2);
l1->SetElement( femObject->GetElement(0) );
l1->SetDegreeOfFreedom(6);
l1->SetValue( vnl_vector<double>(1, 0.0) );
femObject->AddNextLoad( l1 );
l1 = itk::fem::LoadBC::New();
l1->SetGlobalNumber(3);
l1->SetElement( femObject->GetElement(0) );
l1->SetDegreeOfFreedom(7);
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(0) );
l2->SetNode(1);
vnl_vector<double> F(Dimension);
F[0] = 5;
F[1] = 0;
l2->SetForce(F);
femObject->AddNextLoad( l2 );
l2 = itk::fem::LoadNode::New();
l2->SetGlobalNumber(5);
l2->SetElement( femObject->GetElement(0) );
l2->SetNode(2);
vnl_vector<double> F1(Dimension);
F1[0] = 10;
F1[1] = 0;
l2->SetForce(F1);
femObject->AddNextLoad( l2 );
femObject->FinalizeMesh();
solver->SetInput( femObject );
solver->Update();
// to write the deformed mesh
// Testing the fe mesh validity
typedef itk::FEMObjectSpatialObject<Dimension> FEMObjectSpatialObjectType;
FEMObjectSpatialObjectType::Pointer femSODef = FEMObjectSpatialObjectType::New();
femSODef->SetFEMObject(solver->GetOutput() );
typedef itk::FEMSpatialObjectWriter<Dimension> FEMSpatialObjectWriterType;
typedef FEMSpatialObjectWriterType::Pointer FEMSpatialObjectWriterPointer;
FEMSpatialObjectWriterPointer SpatialWriter = FEMSpatialObjectWriterType::New();
SpatialWriter->SetInput(femSODef);
SpatialWriter->SetFileName( argv[1] );
SpatialWriter->Update();
std::cout << "Test PASSED!" << std::endl;
return EXIT_SUCCESS;
}
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