About this Abstract |
Meeting |
2024 ASC Technical Conference, US-Japan Joint Symposium, D30 Meeting
|
Symposium
|
2024 ASC Technical Conference, US-Japan Joint Symposium, D30 Meeting
|
Presentation Title |
Isogeometric topology optimization for additively manufactured composites |
Author(s) |
Sean Phenisee, Antonio Deleo, Derek Shelley, Shawn Huff, Daniele Pelessone, Marco Salviato |
On-Site Speaker (Planned) |
Sean Phenisee |
Abstract Scope |
The advancement in Additive Manufacturing (AM) technology enables the production of composite structures with complex geometrical features and fiber reinforcement with non-conventional curvilinear paths to tailor the local mechanical properties. Conventional topology optimization can provide the optimal shape for weight reduction with a simple homogenized assumption on material points. However, the design can easily end up including multiple joint-like regions presenting following problems: 1) uncertainty in reinforcement orientation, 2) discontinuity of fiber reinforcement exacerbating the strength, and 3) manufacturability with the current AM technology. To this end, an isogeometric topology optimization (IGTO) framework is proposed in this work.
In IGTO, identical spline representation is utilized to provide model generation, solution space for analysis, and design space for topology optimization. As a result, the multi-stage workflow in IGTO is seamless and provides the following advantages during the design iteration. First, the spline representation of a geometry automatically retains the smooth and the exact shape of the optimized structure. Second, the investigation of optimal print paths on structure accounts for the mechanical orthotropy of fiber-reinforced composite material; therefore, the fibers are efficiently oriented to carry the load. Lastly, spline interpolation can provide a generalized fiber path design in which fibers are not intersecting each other. As a result, structures with intersecting joints are prevented, improving the manufacturability of the design. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |