public static void CheckModel(Model model, LoadCase lc)
{
model.ReIndexNodes();
//LoadCase.DefaultLoadCase
var fullst = MatrixAssemblerUtil.AssembleFullStiffnessMatrix(model);
var mgr = DofMappingManager.Create(model, lc);
var dvd = CalcUtil.GetReducedZoneDividedMatrix(fullst, mgr);
var stiffness = dvd.ReleasedReleasedPart;
var n = stiffness.ColumnCount;
for (int i = 0; i < n; i++)
{
var t = stiffness.At(i, i);
if (t > 0)
{
continue;
}
var m1 = mgr.RMap2[i];
var m2 = mgr.RMap1[m1];
var nodeNum = m2 / 6;
if (t == 0)
{
model.Trace.Write(Common.TraceLevel.Warning, "DoF {0} of Node {1} not properly constrained", m2 % 6, nodeNum);
}
else//t < 0
{
model.Trace.Write(Common.TraceLevel.Warning, "DoF {0} of Node {1} not member", m2 % 6, nodeNum);
}
}
var k = MatrixAssemblerUtil.AssembleFullStiffnessMatrix(model);
//CalcUtil.MakeMatrixSymetric(k);
var kt = k.Transpose();
Enumerable.Range(0, k.Values.Length).ToList().ForEach(i => kt.Values[i] = -kt.Values[i]);
var sym = k.Add(kt);
var max = sym.Values.Max(i => Math.Abs(i));
}
public static void FixUnrestrainedDofs(Model model, LoadCase lc)
{
model.ReIndexNodes();
var fullst = MatrixAssemblerUtil.AssembleFullStiffnessMatrix(model);
var mgr = DofMappingManager.Create(model, lc);
var dvd = CalcUtil.GetReducedZoneDividedMatrix(fullst, mgr);
var stiffness = dvd.ReleasedReleasedPart;
var n = stiffness.ColumnCount;
for (int i = 0; i < n; i++)
{
var t = stiffness.At(i, i);
if (t > 0)
{
continue;
}
var m1 = mgr.RMap2[i];
var m2 = mgr.RMap1[m1];
var nodeNum = m2 / 6;
var targetDof = (DoF)(m2 % 6);
var nde = model.Nodes[nodeNum];
switch (targetDof)
{
case DoF.Dx:
nde.Constraints = nde.Constraints & Constraint.FixedDX;
break;
case DoF.Dy:
nde.Constraints = nde.Constraints & Constraint.FixedDY;
break;
case DoF.Dz:
nde.Constraints = nde.Constraints & Constraint.FixedDZ;
break;
case DoF.Rx:
nde.Constraints = nde.Constraints & Constraint.FixedRX;
break;
case DoF.Ry:
nde.Constraints = nde.Constraints & Constraint.FixedRY;
break;
case DoF.Rz:
nde.Constraints = nde.Constraints & Constraint.FixedRZ;
break;
}
}
}
/// <summary>
/// Adds the analysis result.
/// </summary>
/// <param name="loadCase">The load case.</param>
/// <remarks>if model is analyzed against specific load case, then displacements are available through <see cref="Displacements"/> property.
/// If system is not analyses against a specific load case, then this method will analyses structure against <see cref="LoadCase"/>.
/// While this method is using pre computed Cholesky Decomposition , its have a high performance in solving the system.
/// </remarks>
public static void AddAnalysisResult(this StaticLinearAnalysisResult thiis, LoadCase loadCase)
{
ISolver solver;
var map = DofMappingManager.Create(thiis.Parent, loadCase);
var n = thiis.Parent.Nodes.Count; //node count
var m = map.M; //master node count
var pu = PermutationGenerator.GetDisplacementPermute(thiis.Parent, map); //permutation of U
var pf = PermutationGenerator.GetForcePermute(thiis.Parent, map); //permutation of F
var fe = thiis.ElementForces[loadCase] = thiis.GetTotalElementsForceVector(loadCase);
var fc = thiis.ConcentratedForces[loadCase] = thiis.GetTotalConcentratedForceVector(loadCase);
var ft = fe.Add(fc);
var fr = pf.Multiply(ft);
var ffr = thiis.GetFreePartOfReducedVector(fr, map);
var fsr = thiis.GetFixedPartOfReducedVector(fr, map);
var kt = MatrixAssemblerUtil.AssembleFullStiffnessMatrix(thiis.Parent);
var kr = (CCS)((CCS)pf.Multiply(kt)).Multiply(pu);
#region U_s,r
var usr = new double[map.RMap3.Length];
{
//should fill usr
var ut_temp = thiis.GetTotalDispVector(loadCase, map);
for (int i = 0; i < usr.Length; i++)
{
var t1 = map.RMap3[i];
var t2 = map.RMap1[t1];
usr[i] = ut_temp[t2];
}
}
#endregion
var krd = CalcUtil.GetReducedZoneDividedMatrix(kr, map);
thiis.AnalyseStiffnessMatrixForWarnings(krd, map, loadCase);
{//TODO: remove
var minAbsDiag = double.MaxValue;
foreach (var tpl in krd.ReleasedReleasedPart.EnumerateIndexed())
{
if (tpl.Item1 == tpl.Item2)
{
minAbsDiag = Math.Min(minAbsDiag, Math.Abs(tpl.Item3));
}
}
if (krd.ReleasedReleasedPart.RowCount != 0)
{
//var kk = krd.ReleasedReleasedPart.ToDenseMatrix();
}
}
#region solver
if (thiis.Solvers.ContainsKey(map.MasterMap))
{
solver = thiis.Solvers[map.MasterMap];
}
else
{
solver =
//SolverGenerator(krd.ReleasedReleasedPart);
thiis.SolverFactory.CreateSolver(krd.ReleasedReleasedPart);
thiis.Solvers[map.MasterMap] = solver;
}
if (!solver.IsInitialized)
{
solver.Initialize();
}
#endregion
double[] ufr = new double[map.RMap2.Length];
//string message;
var input = ffr.Subtract(krd.ReleasedFixedPart.Multiply(usr));
solver.Solve(input, ufr);
//if (res2 != SolverResult.Success)
// throw new BriefFiniteElementNetException(message);
var fpsr = krd.FixedReleasedPart.Multiply(ufr).Add(krd.FixedFixedPart.Multiply(usr));
var fsrt = fpsr.Subtract(fsr);// no needed
var fx = thiis.SupportReactions[loadCase] = new double[6 * n];
#region forming ft
for (var i = 0; i < map.Fixity.Length; i++)
{
if (map.Fixity[i] == DofConstraint.Fixed)
{
ft[i] = 0;
}
}
for (var i = 0; i < fpsr.Length; i++)
{
var totDofNum = map.RMap1[map.RMap3[i]];
ft[totDofNum] = fx[totDofNum] = fpsr[i];
}
#endregion
#region forming ur
var ur = new double[map.M * 6];
for (var i = 0; i < usr.Length; i++)
{
ur[map.RMap3[i]] = usr[i];
}
for (var i = 0; i < ufr.Length; i++)
{
ur[map.RMap2[i]] = ufr[i];
}
#endregion
var ut = pu.Multiply(ur);
thiis.Forces[loadCase] = ft;
thiis.Displacements[loadCase] = ut;
}