public readmesh()
{
String modelName = CSMGEN.RD.next();
String fileName = CSMGEN.RD.next();
CSMGEN.PR.WriteLine("ReadMesh: {0} {1}\n", modelName, fileName);
FeScanner RD = new FeScanner(fileName);
FeModel m = new FeModel(RD, CSMGEN.PR);
m.readData();
CSMGEN.blocks.Add(modelName, m);
CSMGEN.PR.WriteLine("Mesh " + modelName + ": nEl = {0,9} nNod = {1,9}\n", m.nEl, m.nNod);
}
public static void readData(FeScanner RD)
{
readDataFile(RD);
FeScanner fes = new FeScanner(meshFile);
fem = new FeModel(fes, null);
Element.fem = fem;
fem.readData();
if (resultFile != null)
{
displ = new double[fem.nNod * fem.nDf];
FeStress stress = new FeStress(fem);
stress.readResults(resultFile, displ);
if (deformScale > 0)
{
showDeformShape = true;
}
drawContours = VisData.parm != VisData.parms.none;
}
}
public CSFEM()
{
UTIL.printDate(PR);
FeModel fem = new FeModel(RD, PR);
Element.fem = fem;
fem.readData();
//Console.WriteLine(fem.nEl);
PR.Write(Environment.NewLine + "Number of elements nEl = {0,9}" + Environment.NewLine +
"Number of nodes nNod = {1,9}" + Environment.NewLine +
"Number of dimensions nDim = {2,9}" + Environment.NewLine,
fem.nEl, fem.nNod, fem.nDim);
long t0 = Environment.TickCount;
Solver solver = Solver.newSolver(fem);
solver.assembleGSM();
PR.WriteLine("Memory for global matrix: {0,9:0.00} MB" + Environment.NewLine, Solver.lengthOfGSM * 8.0e-6);
FeLoad load = new FeLoad(fem);
Element.load = load;
FeStress stress = new FeStress(fem);
// Load step loop
while (load.readData())
{
load.assembleRHS();
int iter = 0;
// Equilibrium iterations
do
{
iter++;
int its = solver.solve(FeLoad.RHS);
if (its > 0)
{
PR.Write(Environment.NewLine + "Solver: {0} iterations" + Environment.NewLine, its);
}
stress.computeIncrement();
} while (!stress.equilibrium(iter));
stress.accumulate();
stress.writeResults();
PR.WriteLine("Loadstep {0}", FeLoad.loadStepName);
if (iter > 1)
{
PR.WriteLine("{0,5} iterations, " + "Relative residual norm = {1,9:E6}", iter, FeStress.relResidNorm);
}
PR.Write(Environment.NewLine);
}
PR.Write(Environment.NewLine + "Solution time = {0:0.00} s" + Environment.NewLine, (Environment.TickCount - t0) * 0.001);
}
public static void CsfeaToVtk_Main(String[] args)
{
Console.Clear();
Console.WriteLine();
Console.WriteLine("***************************************************");
Console.WriteLine("* C# Finite Element Analysis - Post-Processor *");
Console.WriteLine("* ------------------------------------------- *");
Console.WriteLine("* Copyright © Ravinder Singh, 2017. *");
Console.WriteLine("* License: Apache v2.0 License. *");
Console.WriteLine("* For further information on this software *");
Console.WriteLine("* email : [email protected]. *");
Console.WriteLine("***************************************************");
Console.WriteLine();
string[] w;
switch (args.Length)
{
case 1:
w = args[0].Split('.');
meshFile = args[0];
outFile = w[0] + "_msh" + ".vtk";
break;
case 2:
w = args[1].Split('.');
meshFile = args[0];
resultFile = args[1];
outFile = w[0] + "_" + w[1] + ".vtk";
break;
default:
break;
}
fes = new FeScanner(meshFile);
fem = new FeModel(fes, null);
Element.fem = fem;
fem.readData();
WR = new FePrintWriter().getPrinter(outFile);
WR.WriteLine("# vtk DataFile Version 3.1");
WR.WriteLine(outFile);
WR.WriteLine("ASCII\nDATASET UNSTRUCTURED_GRID");
WR.WriteLine("POINTS {0} DOUBLE", fem.nNod);
int ElemConnectNodeCount = 0;
for (int iel = 0; iel < fem.nEl; iel++)
{
if (fem.elems[iel].name.Equals("hex20") || fem.elems[iel].name.Equals("hex20r"))
{
ElemConnectNodeCount += 21;
}
if (fem.elems[iel].name.Equals("hex8") || fem.elems[iel].name.Equals("hex8r"))
{
ElemConnectNodeCount += 9;
}
if (fem.elems[iel].name.Equals("quad8") || fem.elems[iel].name.Equals("quad8r"))
{
ElemConnectNodeCount += 9;
}
if (fem.elems[iel].name.Equals("quad4") || fem.elems[iel].name.Equals("quad4r"))
{
ElemConnectNodeCount += 5;
}
if (fem.elems[iel].name.Equals("truss22") || fem.elems[iel].name.Equals("truss32"))
{
ElemConnectNodeCount += 3;
}
}
for (int i = 0; i < fem.nNod; i++)
{
for (int j = 0; j < fem.nDim; j++)
{
WR.Write("{0,20:0.000000000}", fem.getNodeCoord(i, j));
}
if (fem.nDim < 3)
{
WR.Write("{0,20:0.000000000}", 0.0);
}
if (fem.nDim < 2)
{
WR.Write("{0,20:0.000000000}", 0.0);
}
WR.WriteLine();
}
WR.WriteLine();
WR.Write("\nCELLS {0} ", fem.nEl);
WR.Write("{0} \n", ElemConnectNodeCount);
for (int iel = 0; iel < fem.nEl; iel++)
{
if (fem.elems[iel].name.Equals("hex20") || fem.elems[iel].name.Equals("hex20r"))
{
WR.Write("20 ");
int nind = fem.elems[iel].ind.Length;
for (int i = 0; i < vtkArrInd_hex20.Length; i++)
{
WR.Write("{0,6}", fem.elems[iel].ind[vtkArrInd_hex20[i]] - 1);
}
}
if (fem.elems[iel].name.Equals("hex8") || fem.elems[iel].name.Equals("hex8r"))
{
WR.Write("8 ");
int nind = fem.elems[iel].ind.Length;
for (int i = 0; i < vtkArrInd_hex8.Length; i++)
{
WR.Write("{0,6}", fem.elems[iel].ind[vtkArrInd_hex8[i]] - 1);
}
}
if (fem.elems[iel].name.Equals("quad8") || fem.elems[iel].name.Equals("quad8r"))
{
WR.Write("8 ");
int nind = fem.elems[iel].ind.Length;
for (int i = 0; i < vtkArrInd_quad8.Length; i++)
{
WR.Write("{0,6}", fem.elems[iel].ind[vtkArrInd_quad8[i]] - 1);
}
}
if (fem.elems[iel].name.Equals("quad4") || fem.elems[iel].name.Equals("quad4r"))
{
WR.Write("4 ");
int nind = fem.elems[iel].ind.Length;
for (int i = 0; i < vtkArrInd_quad4.Length; i++)
{
WR.Write("{0,6}", fem.elems[iel].ind[vtkArrInd_quad4[i]] - 1);
}
}
if (fem.elems[iel].name.Equals("truss22") || fem.elems[iel].name.Equals("truss32"))
{
WR.Write("2 ");
int nind = fem.elems[iel].ind.Length;
for (int i = 0; i < vtkArrInd_truss2.Length; i++)
{
WR.Write("{0,6}", fem.elems[iel].ind[vtkArrInd_truss2[i]] - 1);
}
}
WR.WriteLine();
}
WR.WriteLine("\nCELL_TYPES {0}", fem.nEl);
for (int i = 0; i < fem.nEl; i++)
{
if (fem.elems[i].name.Equals("hex20") || fem.elems[i].name.Equals("hex20r"))
{
WR.Write("{0,3}", 25);
}
if (fem.elems[i].name.Equals("hex8") || fem.elems[i].name.Equals("hex8r"))
{
WR.Write("{0,3}", 12);
}
if (fem.elems[i].name.Equals("quad8") || fem.elems[i].name.Equals("quad8r"))
{
WR.Write("{0,3}", 23);
}
if (fem.elems[i].name.Equals("quad4") || fem.elems[i].name.Equals("quad4r"))
{
WR.Write("{0,3}", 9);
}
if (fem.elems[i].name.Equals("truss22") || fem.elems[i].name.Equals("truss32"))
{
WR.Write("{0,3}", 3);
}
}
WR.WriteLine("\n");
if (resultFile != null)
{
displ = new double[fem.nNod * fem.nDf];
stress = new FeStress(fem);
stress.readResults(resultFile, displ);
resAtNod = new ResultAtNodes(fem);
WR.Write("POINT_DATA {0}", fem.nNod);
writeScalars("Si");
writeScalars("Sx");
writeScalars("Sy");
writeScalars("Sz");
writeScalars("Sxy");
if (fem.nDim == 3)
{
writeScalars("Syz");
writeScalars("Szx");
}
//writeScalars("S1");
//writeScalars("S2");
//if (fem.nDim == 3)
//{
// writeScalars("S3");
// writeScalars("S13");
//}
writeScalars("Ux");
writeScalars("Uy");
if (fem.nDim == 3)
{
writeScalars("Uz");
}
}
WR.Flush();
WR.Close();
}