18.3. Output Fields

This section lists output variables for the phase-field fracture capability.

• Table 18.1 Nodal Variables for Phase-Field Fracture

• Table 18.2 Element Variables for Phase-Field Fracture

Table 18.1 Nodal Variables for Phase-Field Fracture

Name	Type	Comments
rxndiff_bound_constraint	Real	bound constraint indicator (active if non-zero)
rxndiff_bound_constraint_prev	Real	previous iteration bound constraint indicator
rxndiff_gradient_direction	Real	PCG gradient direction
rxndiff_mass	Real	nodal phase field mass
rxndiff_rhs	Real	phase field evolution equation residual
rxndiff_scratch_sol	Real	PCG scratch solution
rxndiff_search_dir	Real	PCG search direction
rxndiff_sol	Real	phase field \(\phi\)

Table 18.2 Element Variables for Phase-Field Fracture

Name	Type	Comments
rxndiff_sol_grad	Vector_3D	phase field gradient \(\nabla \phi\)
rxndiff_sol_grad_ip	Real	phase field gradient inner product \(\nabla \phi \cdot \nabla \phi\)
rxndiff_sol_intpts	Real	phase field at integration points