public void IsogeometricSquareShell()
{
Model model = new Model();
var filename = "SquareShell";
string filepath = $"..\\..\\..\\MGroup.IGA.Tests\\InputFiles\\{filename}.txt";
IsogeometricShellReader modelReader = new IsogeometricShellReader(model, filepath);
modelReader.CreateShellModelFromFile();
Matrix <double> loadVector =
MatlabReader.Read <double>("..\\..\\..\\MGroup.IGA.Tests\\InputFiles\\SquareShell.mat", "LoadVector");
for (int i = 0; i < loadVector.ColumnCount; i += 3)
{
var indexCP = i / 3;
model.Loads.Add(new Load()
{
Amount = loadVector.At(0, i),
Node = model.ControlPointsDictionary[indexCP],
DOF = StructuralDof.TranslationX
});
model.Loads.Add(new Load()
{
Amount = loadVector.At(0, i + 1),
Node = model.ControlPointsDictionary[indexCP],
DOF = StructuralDof.TranslationY
});
model.Loads.Add(new Load()
{
Amount = loadVector.At(0, i + 2),
Node = model.ControlPointsDictionary[indexCP],
DOF = StructuralDof.TranslationZ
});
}
foreach (var edge in model.PatchesDictionary[0].EdgesDictionary.Values)
{
foreach (var controlPoint in edge.ControlPointsDictionary.Values)
{
model.ControlPointsDictionary[controlPoint.ID].Constraints.Add(new Constraint()
{
DOF = StructuralDof.TranslationX
});
model.ControlPointsDictionary[controlPoint.ID].Constraints.Add(new Constraint()
{
DOF = StructuralDof.TranslationY
});
model.ControlPointsDictionary[controlPoint.ID].Constraints.Add(new Constraint()
{
DOF = StructuralDof.TranslationZ
});
}
}
// Solvers
var solverBuilder = new SkylineSolver.Builder();
ISolver solver = solverBuilder.BuildSolver(model);
// Structural problem provider
var provider = new ProblemStructural(model, solver);
// Linear static analysis
var childAnalyzer = new LinearAnalyzer(model, solver, provider);
var parentAnalyzer = new StaticAnalyzer(model, solver, provider, childAnalyzer);
// Run the analysis
parentAnalyzer.Initialize();
parentAnalyzer.Solve();
//var paraview = new ParaviewNurbsShells(model, solver.LinearSystems[0].Solution, filename);
//paraview.CreateParaview2DFile();
Matrix <double> solutionVectorExpected =
MatlabReader.Read <double>("..\\..\\..\\MGroup.IGA.Tests\\InputFiles\\SquareShell.mat", "SolutionVector");
for (int i = 0; i < solutionVectorExpected.ColumnCount; i++)
{
Assert.True(Utilities.AreValuesEqual(solutionVectorExpected.At(0, i), solver.LinearSystems[0].Solution[i],
1e-9));
}
}
public void IsogeometricCantileverShell()
{
Model model = new Model();
string filename = "..\\..\\..\\MGroup.IGA.Tests\\InputFiles\\CantileverShell.txt";
IsogeometricShellReader modelReader = new IsogeometricShellReader(model, filename);
modelReader.CreateShellModelFromFile();
model.Loads.Add(new Load()
{
Amount = -1,
Node = model.ControlPointsDictionary[9],
DOF = StructuralDof.TranslationZ
});
model.Loads.Add(new Load()
{
Amount = -1,
Node = model.ControlPointsDictionary[10],
DOF = StructuralDof.TranslationZ
});
model.Loads.Add(new Load()
{
Amount = -1,
Node = model.ControlPointsDictionary[11],
DOF = StructuralDof.TranslationZ
});
for (int i = 0; i < 6; i++)
{
model.ControlPointsDictionary[i].Constraints.Add(new Constraint()
{
DOF = StructuralDof.TranslationX
});
model.ControlPointsDictionary[i].Constraints.Add(new Constraint()
{
DOF = StructuralDof.TranslationY
});
model.ControlPointsDictionary[i].Constraints.Add(new Constraint()
{
DOF = StructuralDof.TranslationZ
});
}
// Solvers
var solverBuilder = new SkylineSolver.Builder();
ISolver solver = solverBuilder.BuildSolver(model);
// Structural problem provider
var provider = new ProblemStructural(model, solver);
// Linear static analysis
var childAnalyzer = new LinearAnalyzer(model, solver, provider);
var parentAnalyzer = new StaticAnalyzer(model, solver, provider, childAnalyzer);
// Run the analysis
parentAnalyzer.Initialize();
parentAnalyzer.Solve();
var expectedSolution = new double[18]
{
0.0, 0.0, -7499.999986865148, 0.0, 0.0, -7499.99998660616, 0.0, 0.0, -7499.999986347174, 0.0, 0.0,
-14999.999980230163, 0.0, 0.0, -14999.999980050825, 0.0, 0.0, -14999.999979871487
};
for (int i = 0; i < expectedSolution.Length; i++)
{
Utilities.AreValuesEqual(expectedSolution[i], solver.LinearSystems[0].Solution[i], 7);
}
}
