netgen/libsrc/interface/writeabaqus.cpp

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2009-01-13 04:40:13 +05:00
//
// Write Abaqus file
//
//
#include <mystdlib.h>
#include <myadt.hpp>
#include <linalg.hpp>
#include <csg.hpp>
#include <meshing.hpp>
namespace netgen
{
#include "writeuser.hpp"
void WriteAbaqusFormat (const Mesh & mesh,
const string & filename)
{
cout << "\nWrite Abaqus Volume Mesh" << endl;
ofstream outfile (filename.c_str());
outfile << "*Heading" << endl;
outfile << " " << filename << endl;
outfile.precision(8);
outfile << "*Node" << endl;
int np = mesh.GetNP();
int ne = mesh.GetNE();
int i, j, k;
for (i = 1; i <= np; i++)
{
outfile << i << ", ";
outfile << mesh.Point(i)(0) << ", ";
outfile << mesh.Point(i)(1) << ", ";
outfile << mesh.Point(i)(2) << "\n";
}
int elemcnt = 0; //element counter
int finished = 0;
int indcnt = 1; //index counter
while (!finished)
{
int actcnt = 0;
const Element & el1 = mesh.VolumeElement(1);
int non = el1.GetNP();
if (non == 4)
{
outfile << "*Element, type=C3D4, ELSET=PART" << indcnt << endl;
}
else if (non == 10)
{
outfile << "*Element, type=C3D10, ELSET=PART" << indcnt << endl;
}
else
{
cout << "unsupported Element type!!!" << endl;
}
for (i = 1; i <= ne; i++)
{
const Element & el = mesh.VolumeElement(i);
if (el.GetIndex() == indcnt)
{
actcnt++;
if (el.GetNP() != non)
{
cout << "different element-types in a subdomain are not possible!!!" << endl;
continue;
}
elemcnt++;
outfile << elemcnt << ", ";
if (non == 4)
{
outfile << el.PNum(1) << ", ";
outfile << el.PNum(2) << ", ";
outfile << el.PNum(4) << ", ";
outfile << el.PNum(3) << "\n";
}
else if (non == 10)
{
outfile << el.PNum(1) << ", ";
outfile << el.PNum(2) << ", ";
outfile << el.PNum(4) << ", ";
outfile << el.PNum(3) << ", ";
outfile << el.PNum(5) << ", ";
outfile << el.PNum(9) << ", ";
outfile << el.PNum(7) << ", " << "\n";
outfile << el.PNum(6) << ", ";
outfile << el.PNum(8) << ", ";
outfile << el.PNum(10) << "\n";
}
else
{
cout << "unsupported Element type!!!" << endl;
for (j = 1; j <= el.GetNP(); j++)
{
outfile << el.PNum(j);
if (j != el.GetNP()) outfile << ", ";
}
outfile << "\n";
}
}
}
indcnt++;
if (elemcnt == ne) {finished = 1; cout << "all elements found by Index!" << endl;}
if (actcnt == 0) {finished = 1;}
}
if (mesh.GetIdentifications().GetMaxNr())
{
// periodic identification, implementation for
// Helmut J. Boehm, TU Vienna
char cfilename[255];
strcpy (cfilename, filename.c_str());
char mpcfilename[255];
strcpy (mpcfilename, cfilename);
size_t len = strlen (cfilename);
if (len >= 4 && (strcmp (mpcfilename+len-4, ".inp") == 0))
strcpy (mpcfilename+len-4, ".mpc");
else
strcat (mpcfilename, ".mpc");
ofstream mpc (mpcfilename);
int masternode(0);
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Array<INDEX_2> pairs;
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BitArray master(np), help(np);
master.Set();
for (i = 1; i <= 3; i++)
{
mesh.GetIdentifications().GetPairs (i, pairs);
help.Clear();
for (j = 1; j <= pairs.Size(); j++)
{
help.Set (pairs.Get(j).I1());
}
master.And (help);
}
for (i = 1; i <= np; i++)
if (master.Test(i))
masternode = i;
cout << "masternode = " << masternode << " = "
<< mesh.Point(masternode) << endl;
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Array<int> slaves(3);
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for (i = 1; i <= 3; i++)
{
mesh.GetIdentifications().GetPairs (i, pairs);
for (j = 1; j <= pairs.Size(); j++)
{
if (pairs.Get(j).I1() == masternode)
slaves.Elem(i) = pairs.Get(j).I2();
}
cout << "slave(" << i << ") = " << slaves.Get(i)
<< " = " << mesh.Point(slaves.Get(i)) << endl;
}
outfile << "**\n"
<< "*NSET,NSET=CTENODS\n"
<< slaves.Get(1) << ", "
<< slaves.Get(2) << ", "
<< slaves.Get(3) << endl;
outfile << "**\n"
<< "**POINT_fixed\n"
<< "**\n"
<< "*BOUNDARY, OP=NEW\n";
for (j = 1; j <= 3; j++)
outfile << masternode << ", " << j << ",, 0.\n";
outfile << "**\n"
<< "*BOUNDARY, OP=NEW\n";
for (j = 1; j <= 3; j++)
{
Vec3d v(mesh.Point(masternode), mesh.Point(slaves.Get(j)));
double vlen = v.Length();
int dir = 0;
if (fabs (v.X()) > 0.9 * vlen) dir = 2;
if (fabs (v.Y()) > 0.9 * vlen) dir = 3;
if (fabs (v.Z()) > 0.9 * vlen) dir = 1;
if (!dir)
cout << "ERROR: Problem with rigid body constraints" << endl;
outfile << slaves.Get(j) << ", " << dir << ",, 0.\n";
}
outfile << "**\n"
<< "*EQUATION, INPUT=" << mpcfilename << endl;
BitArray eliminated(np);
eliminated.Clear();
for (i = 1; i <= mesh.GetIdentifications().GetMaxNr(); i++)
{
mesh.GetIdentifications().GetPairs (i, pairs);
if (!pairs.Size())
continue;
for (j = 1; j <= pairs.Size(); j++)
if (pairs.Get(j).I1() != masternode &&
!eliminated.Test(pairs.Get(j).I2()))
{
eliminated.Set (pairs.Get(j).I2());
for (k = 1; k <= 3; k++)
{
mpc << "4" << "\n";
mpc << pairs.Get(j).I2() << "," << k << ", -1.0, ";
mpc << pairs.Get(j).I1() << "," << k << ", 1.0, ";
mpc << slaves.Get(i) << "," << k << ", 1.0, ";
mpc << masternode << "," << k << ", -1.0 \n";
}
}
}
}
cout << "done" << endl;
}
}