eval_CS_dbf

eval_CS_dbf(d: int, e: Expr, dU_dX: MatrixBase, P: MatrixBase)[source]

Evaluate displacement based configurational stress tensor.

Parameters:

  • d – number of dimensions

  • e – energy density

  • dU_dX – matrix of shape (d, d); derivatives of displacements with respect to undeformed real space coordinates

  • P – matrix of shape (d, d); First Piola-Kirchhoff stress tensor

Returns:

symbolic matrix of shape (d, d)