build_stiffness_matrix.h File Reference

Go to the source code of this file.

Functions
void	buildStiffnessMatrix (Eigen::Ref< Eigen::Matrix< double, 6, 6 >> C, const double &G, const double &lambda)
	build a 6x6 representation of the stiffness tensor in C from the shear modulus G and Lame's first parameter lambda. More...

Function Documentation

buildStiffnessMatrix()

void buildStiffnessMatrix	(	Eigen::Ref< Eigen::Matrix< double, 6, 6 >>	C,
		const double &	G,
		const double &	lambda
	)

build a 6x6 representation of the stiffness tensor in C from the shear modulus G and Lame's first parameter lambda.

Definition at line 13 of file build_stiffness_matrix.C.

Referenced by FOR_NAME(), and umat_().

{
  C = Eigen::Matrix<double, 6, 6>::Zero();

  for (int i = 0; i < 3; i++)
  {
    C(i, i) += 2 * G;
    C(i + 3, i + 3) += G;
    for (int j = 0; j < 3; j++)
      C(i, j) += lambda;
  }
}