Fatigue with Fracture Mechanics (PFA_FATIGUE_VCCT)
Effectively evaluates the fatigue life of a metal structure by
combing the Progressive Failure Analysis-Virtual Crack Closure Technique
(PFA-VCCT) and Fatigue Crack Growth (FCG) modules together.
Reliably analyzes the fracture development and growth in a metal
structure along the predetermined path under the applied cyclic loading.
The approach is fracture-mechanics based. It requires:
A predetermined fracture path based on either of the following:
1) experimental testing; 2) a preliminary GENOA/PFA analysis; or 3) the user
experience. The predetermined path can be effectively prescribed using the
A fatigue crack growth curve (da/dN vs. DK data) for the material under consideration. The curve can be
obtained from tests, standard handbooks, or calculated by using GENOA-FCG for a
specific panel thickness and stress ratio
The S-N curve for the selected material (derived from tests or
found in the open literature).
Can be used with the GENOA-PA to account for the probabilistic
nature of fatigue.
The approach is restricted to linear elastic materials and shell
Accurately evaluates the service life of metal structures subject
to cyclic loads.
Effectively analyzes the development of the fatigue failure
initiation site in aerospace, automotive and other metallic structures.
Accounts for the probabilistic nature of fatigue.