This presentation aims to provide a condensed review of the current status of the cellular structure based lightweight structure designs realized via additive manufacturing (AM), as well as a brief comparison of such design approach versus the other methodologies such as topology optimization. Due to the unique characteristics of the AM technologies, current AM lightweight materials exhibit high levels of heterogeneity, which makes it challenging for the geometry-based design methodologies. On the other hand, for the cellular unit cell based design methodologies, there also exist various issues with both the geometry designs and the overall properties designs, such as the size effects, the property anisotropy and the failure mechanisms, that were not adequately addressed by traditional cellular design theories. A more comprehensive multi-scale design theory is needed to address both the material design and the geometry design of the AM lightweight structures in order to achieve high-fidelity designs, which is proposed in this presentation.
- Gain more comprehensive understanding about the material-geometry design issues with the AM lightweight structures.
- Learn about the current challenges with the AM cellular lightweight structures.
- Understand some of the issues with the current AM lightweight structure design methodologies.