What the study found
The study found that a lightweight seat module assembly for an indoor robotic arm amusement ride could be redesigned so the outer shell carries primary loads. The final design reduced mass by 36% and increased seating capacity from four to five seats, which the authors report as a 49% reduction in mass per seat compared with the metallic baseline.
Why the authors say this matters
The authors conclude that this load-path-driven, composite-first approach offers a new direction for seat module assembly design in the themed entertainment industry. They suggest it can reduce weight while increasing occupant capacity.
What the researchers tested
The researchers used a bottom-up design method that introduced topology optimization at the start of the process. They explored manufacturing-specific versions of the optimized design, including extrusion and tubing-based approaches, and used fiber-reinforced polymers as the structural material. Finite element analysis was then used to test the final design under high intensity load cases.
What worked and what didn't
The optimized design met the stress and displacement constraints in finite element analysis. The outer shell’s curved geometry was described as reducing stress concentrations while contributing to structural stiffness, and the integrated design increased capacity from four to five seats. The abstract does not report any failed design options or unsuccessful tests.
What to keep in mind
The abstract does not describe detailed limitations, and it does not provide comparison data beyond the stated metallic baseline. The feasibility discussion is limited to the manufacturing-specific interpretations mentioned in the abstract.
Key points
- The final seat module design reduced mass by 36% compared with the metallic baseline.
- Seating capacity increased from four seats to five seats.
- Mass per seat was reported as 49% lower than the metallic baseline.
- The design used topology optimization from the start and treated the outer shell as a primary load path.
- Finite element analysis showed the final design satisfied stress and displacement constraints.
Disclosure
- Research title:
- Topology-optimized seat module reduces mass and adds capacity
- Authors:
- Claire Pooler, Benjamin Hronowsky, Kevin Chai, Yifan Shi, TaeIl Park, David Siu-Kau Lo, Il Yong Kim
- Institutions:
- Queen's University, Caesars Entertainment (United States)
- Publication date:
- 2026-04-07
- OpenAlex record:
- View
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