: Using singular elements (quarter-point nodes) at the crack tip to capture the high stress gradients accurately. Material Properties : Defining fracture toughness ( KICcap K sub cap I cap C end-sub
: Creating the "flaw" or crack tip within the mesh. Crack Patran Nastran
: Visualizing "Damage" or "Log of Life" to see which parts of the structure will fail first. : Using singular elements (quarter-point nodes) at the