RUM2021 RUM2021-NAM Abaqus
As additively manufactured structures become more commonplace across the industry, there is a need for generalized methods of strength prediction. The wide variation in material properties, especially failure criteria, require custom developed material models that depend not just on the material but also on fabrication process parameters.
To address the need for strength prediction, advanced features available in Abaqus in the form of user material modeling have been successfully utilized at Boeing to predict static strength, impact strength and corresponding failure modes for additively manufactured parts. Two case studies will be presented using this approach. The first of these is for additively manufactured titanium where strength predictions and corresponding failure modes for various load cases and material processing parameters have been made which correlate excellently with corresponding structural tests. In the second case study, a similar approach has been utilized for predicting the impact strength of polymer parts and correlated with subsequent physical testing.
As additive manufacturing continues to expand across the industry, advanced features in Abaqus such as the built-in versatile material modeling capability open the door to virtual testing.This in turn is a key enabler of significant cost savings in the form of minimizing physical testing and providing valuable insight leading to an expansion of the product design space.
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