Pros and Cons of 3D Crack Growth Simulation using Finite Elements
Abstract: Recent advances in fatigue crack growth simulation technology make it possible to predict crack size and shape as a function of load cycles for more complex structural configurations than previously possible. These technology advances, often based on computing stress intensity factors (SIFs) using the finite element method (FEM), allow the removal of many of the limiting assumptions previously required for analysis but also introduce new sources of error (the errors of approximation) which must be considered and controlled for effective use of numerical simulation in the prediction of fatigue life.
Originally presented as a track presentation at the 2017 ASIP conference in Jacksonville, FL.
Looking for Resources?
Recent News & Events
“Through the use of StressCheck® the A-10 Aircraft Structural Integrity Program’s (ASIP) Analysis Group is able to model more accurately the physics of fatigue crack propagation in critical aircraft structure. Through this tool we are able to model, analyze and predict failure of aircraft structure and then develop crucial inspection and maintenance planes to ensure the safety and sustainability of our nations warplanes. Without the analysis capability provided to us through StressCheck® we would not be able to provide accurate assessments of the A-10 structure to top USAF leadership.”
SWRI Research EngineerSouthwest Research Institute