| Title |
Numerical Study for Shape Optimization of Self-restoring Infinity-shaped Dampers |
| Authors |
이헌우(Lee, Heon-Woo);아시프 라비아(Asif, Rabea);허종완(Hu, Jong-Wan) |
| DOI |
https://doi.org/10.12652/Ksce.2025.45.6.0623 |
| Keywords |
초탄성 형상기억합금; 유한요소해석; 에너지소산; 자동복원; 댐퍼 Superelastic shape memory alloy; Finite element analysis; Energy dissipation; Self-restoration; Damper |
| Abstract |
As earthquakes increase worldwide, technological development related to seismic resistance is also steadily increasing. Given the ongoing development of new materials, the integration of seismic and new material technologies is a natural progression of technological advancement. Accordingly, this study aimed to optimize the shape of a self-restoring infinity-shaped damper using a superelastic shape memory alloy (SSMA). Conventional steel dampers experience residual deformation and performance degradation when subjected to repeated loading. To overcome this, the proposed infinity-shaped damper utilizes the properties of SSMA to automatically restore the resulting displacement. Furthermore, its innovative shape is expected to effectively dissipate energy with a small amount of material. Finite element analysis using ABAQUS was performed on ten dampers, varying the geometry, including the length of the intersection and the radius of the infinite shape. The analysis results yielded quantitative parameters for evaluating damper performance, such as maximum load and energy dissipation, and suggested an optimal shape. The infinity-shaped damper is expected to be a novel alternative in seismic design, capable of efficiently dissipating seismic energy while ensuring structural resilience. |