| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing for Energy Applications II
|
| Presentation Title |
Mechanical Response and Reduced-order Simulations of Additively Manufactured Metallic Lattice Structures |
| Author(s) |
Connie Q. Dong, Sara A Messina, Matthew R Begley |
| On-Site Speaker (Planned) |
Connie Q. Dong |
| Abstract Scope |
While additive manufacturing provides an exciting pathway to novel lattice-based components, difficulties arise in predicting their performance due to process-structure-property coupling arising from printing, resulting in extended design cycle times which limits full adoption of these materials to market. Experiments designed to establish structure-property relationships in EBM Ti-6Al-4V lattice primitives of struts, multi-strut intersections (“nodes”), and multi-node “cells” will be presented. These experiments illustrate that the resultant performance of these primitives is strongly dependent on their orientation relative to the print direction due to orientation-dependent defects and geometry. Based on these experiments, a reduced-order simulation approach that adapts conventional beam elements to account for the spread of plasticity near defects and in strut intersections has been developed. These results are demonstrated to be in excellent agreement with conventional full-dimensional FEA and are orders of magnitude faster. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |