| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Length-Scale Phenomena in Mechanical Response
|
| Presentation Title |
Invited: Multiscale Phenomena to Inspire Lattice Structures Design |
| Author(s) |
Kavan Hazeli |
| On-Site Speaker (Planned) |
Kavan Hazeli |
| Abstract Scope |
Most of the natural structures, which have been an influential source of inspiration for hierarchical materials design do not have grain structures resembling those that are seen in metals. Therefore, designing bio-inspired metallic materials with hierarchical structures such as additively manufactured lattice structures has been lacking in benefiting the property of grain structures. This presentation demonstrates that simultaneously considering the effects of topology and microstructure on the mechanical behavior of AMLS has the potential to substantially improve key performance metrics, e.g., energy dissipation. The distinguishing feature of our approach is that the topological optimization is performed while accounting for the heterogeneous distribution of strut-level microstructure concomitant mechanical behavior leading to peak AMLS structural performance. A new set of new topologies are designed, built, and validated against experiments. The new topologies demonstrate over 50% improvement in energy absorption capacity of topologies that had been previously optimized using a homogeneous constitutive model. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Mechanical Properties, Characterization |