Predicting Large Scale Crack Growth In 3D Finite Element Models

B. Browning, G. Cook, C. Timbrell

Abaqus Users' Conference, Maastricht, The Netherlands, May 30 - June 1 2001

Crack growth prediction techniques have been available for 3D models under mixed mode loading for a number of years. Previous techniques were limited to crack growth within a small region of a model. A new method is presented for automatically predicting large scale crack growth in a 3D finite element model by allowing the crack front to move through the model. Some simple examples are presented in addition to comparison of analysis results against published experimental spin test data for a cracked turbine engine compressor disc. This spin test analysis includes high levels of plasticity and crack closure effects.