| About this Abstract |
| Meeting |
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Symposium
|
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Presentation Title |
Topology Optimization of Continuous Fiber-reinforced Composites Considering Manufacturing Constraints |
| Author(s) |
Janet Wong, Emily D. Sanders, David W Rosen |
| On-Site Speaker (Planned) |
Janet Wong |
| Abstract Scope |
Additive manufacturing (AM) has enlarged the design space of variable stiffness and continuous fiber-reinforced composites (FRCs) by enabling increased freedom in the geometric layout of continuous fibers. Fiber layout optimization has been integrated with topology optimization (TO) to harness such design freedom; however, additional constraints are needed to ensure manufacturability in extrusion-based AM of continuous FRCs. We directly integrate constraints on fiber path curvature and gaps/overlaps between fiber paths into the TO framework. Alongside density design variables defining the structure’s topology, we define radial basis functions (RBFs) with fiber angle design variables defined on the RBF support points. The RBFs promote fiber path continuity and allow us to define functions related to their curl and divergence, which we use as differentiable manufacturing constraints on curvature and gaps/overlaps, respectively. Several numerical examples are provided to illustrate tradeoffs between structural performance and manufacturability of optimized, continuous FRCs when such constraints are considered. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |