public override IEnumerable <INumericalResult> Solve(int resultsCount)
{
ICollection <INumericalResult> results = new List <INumericalResult>();
if (_mesh.IsMeshGenerated)
{
GetConstantMatrix();
indeciesToDelete = getIndeciesWithStaticBoundaryConditions();
Matrix StiffnessMatrix = GetStiffnessMatrix();
StiffnessMatrix = applyStaticBoundaryConditions(StiffnessMatrix, indeciesToDelete);
Matrix MassMatrix = GetMassMatrix();
MassMatrix = applyStaticBoundaryConditions(MassMatrix, indeciesToDelete);
#if (ALL_LAMBDAS)
Vector[] eigenVectors;
double[] lambdas = StiffnessMatrix.GetEigenvalueSPAlgorithm(MassMatrix, out eigenVectors, _error, resultsCount);
results = generateVibrationResults(lambdas, eigenVectors);
#else
Vector eigenVector;
double lambda = StiffnessMatrix.GetMaxEigenvalueSPAlgorithm(out eigenVector, _error);
addStaticPoints(eigenVector);
EigenValuesNumericalResult result = new EigenValuesNumericalResult(_mesh.Elements, eigenVector, Math.Sqrt(lambda / _model.Material.Rho));
results.Add(result);
#endif
}
return(results);
}
public override IEnumerable <INumericalResult> Solve(int resultsCount)
{
IEnumerable <INumericalResult> results = new List <INumericalResult>();
if (_mesh.IsMeshGenerated)
{
GetConstantMatrix();
indeciesToDelete = getIndeciesWithStaticBoundaryConditions();
Matrix stiffnessMatrix = GetStiffnessMatrix();
stiffnessMatrix = applyStaticBoundaryConditions(stiffnessMatrix, indeciesToDelete);
Matrix massMatrix = GetMassMatrix();
massMatrix = applyStaticBoundaryConditions(massMatrix, indeciesToDelete);
#if (ALL_LAMBDAS)
Vector firstEigenVector = null;
double[] lambdas = null;
Vector[] eigenVectors = null;
int iterations = 0;
do
{
if (eigenVectors != null)
{
firstEigenVector = eigenVectors[0];
}
else
{
firstEigenVector = new Vector(stiffnessMatrix.CountRows);
}
firstEigenVector = applyAmplitudeToVector(firstEigenVector);
Matrix nonlinearMatrix = GetNonlinearMatrix(firstEigenVector);
nonlinearMatrix = applyStaticBoundaryConditions(nonlinearMatrix, indeciesToDelete);
Matrix k = stiffnessMatrix + nonlinearMatrix;
lambdas = k.GetEigenvalueSPAlgorithm(massMatrix, out eigenVectors, _error, resultsCount);
iterations++;
}while ((Vector.Norm(eigenVectors[0] - firstEigenVector) > _error) && (iterations < _maxIterations));
results = generateVibrationResults(lambdas, eigenVectors);
#else
Vector eigenVector;
double lambda = StiffnessMatrix.GetMaxEigenvalueSPAlgorithm(out eigenVector, _error);
addStaticPoints(eigenVector);
EigenValuesNumericalResult result = new EigenValuesNumericalResult(_mesh.Elements, eigenVector, Math.Sqrt(lambda / _model.Material.Rho));
results.Add(result);
#endif
}
return(results);
}
protected ICollection <INumericalResult> generateVibrationResults(double[] lambdas, Vector[] eigenVectors)
{
List <INumericalResult> results = new List <INumericalResult>();
for (int i = 0; i < lambdas.Length; i++)
{
Vector eigenVector = eigenVectors[i];
//eigenVector = addStaticPoints(eigenVector, indeciesToDelete);
//eigenVector = applyAmplitudeToVector(eigenVector);
EigenValuesNumericalResult result = new EigenValuesNumericalResult(_mesh.Elements, eigenVector, Math.Sqrt(lambdas[i] / _model.Material.Rho));
results.Add(result);
}
return(results);
}
