eval_dX_dR

eval_dX_dR(X_at_nodes: MatrixBase | ndarray, dH_dR: MatrixBase)[source]

Evaluate derivatives of undeformed real space coordinates with respect to reference space coordinates.

Parameters:

  • X_at_nodes – matrix of shape (n, d); undeformed real space coordinates at nodes

  • dH_dR – matrix of shape (n, d); derivatives of shape functions with respect to reference space coordinates

Returns:

symbolic matrix with shape (d, d)