​​​​​​​RUM2021 ​​​​​​​RUM2021-Spain ​​​​​​​AdditiveManufacturing ​​​​​​​

Additive Manufacturing (AM) application for aerospace industry presents a significant potential to provide substantial benefits such as shorter development process and time to market, weight-optimized designs and on-demand spares manufacturing.

Regarding the aircraft structural integrity, a key aspect in aircraft design, certification and operation is the presence of complex patterns of defects such as lack of fusion or multiple pores and voids, which are intrinsic to AM process and can potentially produce a major detrimental effect in the fatigue strength of AM metallic parts. These defects are process-dependent and largely variable, therefore dedicated characterization and analysis is required.

Airbus DS is developing these VFT simulations for AM metallic parts based on the Continuum Damage Mechanics (CDM) formulation at the defect and coupon scales, in order to predict the effect of AM defects over fatigue strength.

This VFT simulation environment is being developed and implemented in the software PAMDEMIC (Probabilistic Additive Manufacturing DEfect Modelling for Initiation of Cracking), created by Airbus DS, using Simulia Abaqus as core FE solver with add-ons based on user’s subroutines for CDM behavioral modeling and Python scripting for parametric generation of characteristic AM defects and results post-processing.

This work has been presented in the SIMULIA Regional Users Meeting 2021 in Spain. I invite you to watch the video! (coming soon)

Feel free to contact me for further discussion.

Thanks a lot!

ismael.rivero-arevalo@airbus.com