public void Print_MatrixST(MatrixST A, int rows, int col)
{
for (int i = 0; i < rows; i++)
{
string output = "";
for (int j = 0; j < col; j++)
{
output += A.GetFast(i, j).ToString("e2") + " ";
}
Console.WriteLine(output);
}
}
public void ExportBinary(Database DB, int[] nDOF_reduction, double[] F, int inc, string path, string type)
{
Stopwatch sw = new Stopwatch(); sw.Start();
Console.Write(" Export to C++ Linear Solver: "); // Create output in console
// Global Stiffness Matrix Initialization
int nFixDOF = nDOF_reduction.Where(x => x == -1).Count();
Dictionary <Tuple <int, int>, double> K = new Dictionary <Tuple <int, int>, double>();
// Assembly loop
Parallel.ForEach(DB.ElemLib.Values, Elem =>
{
MatrixST k = new MatrixST(3 * Elem.NList.Count, 3 * Elem.NList.Count);
if (type == "Initial")
{
k = Elem.K_Initial(inc, DB);
}
if (type == "Tangent")
{
k = Elem.K_Tangent(inc, DB);
}
// Assembly to Global Stiffness Matrix
for (int i = 0; i < Elem.NList.Count; i++)
{
for (int m = 0; m < 3; m++)
{
for (int j = 0; j < Elem.NList.Count; j++)
{
for (int n = 0; n < 3; n++)
{
int row = DB.NodeLib[Elem.NList[i]].DOF[m];
int col = DB.NodeLib[Elem.NList[j]].DOF[n];
// Only Upper Left triangle is needed
if (col >= row)
{
// K matrix with Esential BC included
if (nDOF_reduction[row] != -1)
{
if (nDOF_reduction[col] != -1)
{
lock (K)
{
Tuple <int, int> key = new Tuple <int, int>(row - nDOF_reduction[row], col - nDOF_reduction[col]);
if (K.ContainsKey(key))
{
K[key] += k.GetFast(i * 3 + m, j * 3 + n);
}
else
{
K.Add(key, k.GetFast(i * 3 + m, j * 3 + n));
}
}
}
}
}
}
}
}
}
;
});
// Write binary K matrix
using (BinaryWriter b = new BinaryWriter(File.Open(path + @"\K.bin", FileMode.Create)))
{
foreach (KeyValuePair <Tuple <int, int>, double> i in K)
{
b.Write(i.Key.Item1); b.Write(i.Key.Item2); b.Write(i.Value);
}
}
// Write binary F vector
using (BinaryWriter b = new BinaryWriter(File.Open(path + @"\F.bin", FileMode.Create)))
{
foreach (double i in F)
{
b.Write(i);
}
}
//using (StreamWriter b = new StreamWriter(File.Open(path + @"\STAN_KMatrix.txt", FileMode.Create)))
//{
// foreach (KeyValuePair<Tuple<int, int>, double> i in K)
// {
// b.Write(i.Key.Item1); b.Write(" "); b.Write(i.Key.Item2); b.Write(" "); b.Write(i.Value); b.Write("\n");
// }
//}
sw.Stop();
Console.WriteLine(" Done in " + sw.Elapsed.TotalSeconds.ToString("F2", CultureInfo.InvariantCulture) + "s");
}
// -------------------- Finite Element matrix methods -----------------------------
public alglib.sparsematrix ParallelAssembly_K(Database DB, int[] nDOF_reduction, int inc, string type)
{
Stopwatch sw = new Stopwatch(); sw.Start();
// Global Stiffness Matrix Initialization
int nFixDOF = nDOF_reduction.Where(x => x == -1).Count();
alglib.sparsecreate(DB.nDOF - nFixDOF, DB.nDOF - nFixDOF, out alglib.sparsematrix K);
// Assembly loop
Console.Write(" K Matrix assembly: "); // Create output in console
Parallel.ForEach(DB.ElemLib.Values, Elem =>
{
MatrixST k = new MatrixST(3 * Elem.NList.Count, 3 * Elem.NList.Count);
if (type == "Initial")
{
k = Elem.K_Initial(inc, DB);
}
if (type == "Tangent")
{
k = Elem.K_Tangent(inc, DB);
}
// Assembly to Global Stiffness Matrix
for (int i = 0; i < Elem.NList.Count; i++)
{
for (int m = 0; m < 3; m++)
{
for (int j = 0; j < Elem.NList.Count; j++)
{
for (int n = 0; n < 3; n++)
{
int row = DB.NodeLib[Elem.NList[i]].DOF[m];
int col = DB.NodeLib[Elem.NList[j]].DOF[n];
// Only Upper Left triangle is needed
if (col >= row)
{
// K matrix with Esential BC included
if (nDOF_reduction[row] != -1)
{
if (nDOF_reduction[col] != -1)
{
lock (K)
{
alglib.sparseadd(K, row - nDOF_reduction[row], col - nDOF_reduction[col],
k.GetFast(i * 3 + m, j * 3 + n));
}
}
}
}
}
}
}
}
;
});
sw.Stop();
Console.WriteLine(" Done in " + sw.Elapsed.TotalSeconds.ToString("F2", CultureInfo.InvariantCulture) + "s");
return(K);
}
