C++ (Cpp) Mat3::getPoly Examples

Example #1

File: tests.cpp Project: tarstars/coeff_tune

void work() {
  PiezoTensor pt = makePiezoTensor(3.655, 2.407, 0.328, 1.894);
  MaterialTensor mt = makeMaterialTensor(19.886e10, 5.467e10, 6.799e10, 0.783e10, 23.418e10, 5.985e10, 7.209e10);

  double rho = 4642.8;
  double eps0 = 8.8542e-12;
  double exx = eps0 * 44.9;
  double ezz = eps0 * 26.7;

  Vec3 n(0, 0, 1);

  Mat3 christ = makePiezoChristoffel(pt, mt, n, exx, ezz);
  Poly3 christPoly = christ.getPoly();
  
  double g1, g2, g3;
  christPoly.solve(&g1, &g2, &g3);
  double v1 = sqrt(g1 / rho);
  double v2 = sqrt(g2 / rho);
  double v3 = sqrt(g3 / rho);

  cout << "piezo tensor: " << endl << pt << endl;
  cout << "material tensor: " << endl << mt << endl;
  cout << "christoffel matrix: " << endl << christ << endl;
  cout << "polynome " << christPoly << endl;
  cout << "velocities = " << v1 << " " << v2 << " " << v3 << endl;
}

Example #2

File: util.cpp Project: tarstars/coeff_tune

double residual(const VNVels& vnv) {
  PiezoTensor pt = makePiezoTensor(3.655, 2.407, 0.328, 1.894);
  MaterialTensor mt = makeMaterialTensor(19.886e10, 5.467e10, 6.799e10, 0.783e10, 23.418e10, 5.985e10, 7.209e10);

  double rho = 4642.8;
  double eps0 = 8.8542e-12;
  double exx = eps0 * 44.9;
  double ezz = eps0 * 26.7;
  
  double ret = 0;
  for(VNVels::const_iterator it = vnv.begin(); it != vnv.end(); ++it) {
    Vec3 n(it -> first);

    Mat3 christ = makePiezoChristoffel(pt, mt, n, exx, ezz);
    Poly3 christPoly = christ.getPoly();
  
    double g1, g2, g3;
    christPoly.solve(&g1, &g2, &g3);
    double v1 = sqrt(g1 / rho);
    double v2 = sqrt(g2 / rho);
    double v3 = sqrt(g3 / rho);

    double maxv = max(max(v1, v2), v3);
    double minv = min(min(v1, v2), v3);
    double medv = v1 + v2 + v3 - maxv - minv;

    Vec3 tv(minv, medv, maxv);
    Vec3 ex = it -> second;

    double curResidual = (ex - tv).norm();
    ret += curResidual;

    if (curResidual > 30000) {
      cout << "curResidual = " << curResidual << " n = " << it -> first 
	   << " experimental = " << it -> second << " theory = " << tv << endl; 
    }
  }

  return ret;
}