In order to make accurate crack growth life predictions it is imperative that the Stress Intensity Factor (SIF) values be accurate and represent crack growth behavior in the real component under the actual fatigue loading.
BEASY’s robust crack propagation algorithms provide engineers with the capability to perform realistic fracture mechanics simulations. BEASY’s modeling system allows multiaxial fatigue loading to be defined and in this case an actual rotorcraft load spectrum (ASTRIX) was used in the analysis.
The BEASY methodology reduced the uncertainty associated with handbook calculated SIF values and improved the component life prediction with excellent comparison to test specimen results. This realistic 3D fracture simulation helped with understanding the
critical need for accurate SIF data.