Implementation of a Unified Constitutive Model into the ABAQUS Finite Element Package
AERONAUTICAL AND MARITIME RESEARCH LAB MELBOURNE (AUSTRALIA)
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Unified constitutive models have previously been developed at AMRL and implemented into the PAFEC and ABAQUS Finite Element packages to predict the stress-strain response of structures that undergo multi-axial, rate dependent, cyclic plasticity. In this work, the ABAQUS version of the model has been enhanced to account for advances in unified constitutive modelling, and for consistency with the existing PAFEC version of the model. Numerous test cases have been run to validate the models implementation in ABAQUS. A full 3-dimensional analysis of a proposed test specimen has been undertaken to study residual stress distribution with the ultimate goal of helping to manage fatigue crack growth in the F-111 aircraft.
- Attack and Fighter Aircraft