Hierarchical Clustering-Based Collapse Mode Identification and Design Optimization of Energy-Dissipation Braces Inspired by the Triangular Resch Pattern

• DOI: 10.1061/jsendh.steng-12805
• Publication Date: 2024-02-29T10:30:25Z
• Authors: Yao Chen; Jiayao Shi; Chenhao Lu; Jian Feng; Pooya Sareh
• Keywords: Identification; Hierarchical clustering; Mode (computer interface)

In recent years, energy-dissipation devices have gained significant attention in seismic protection engineering because of their effectiveness mitigating the destructive effects earthquakes. Inspired by an origami pattern invented Ron Resch, this study, we propose a novel type brace to guide deformation process and prevent global buckling structures. To end, parametric geometric model is developed, followed exploring different parameters on structural collapse modes. Subsequently, using hierarchical clustering, modes are classified into four groups. Finally, optimal design introduced improve energy absorption during quasi-static axial crushing while reducing initial peak force. The results show specific play decisive role determining Each group associated with particular force-displacement curve characterized properties. We demonstrate that proposed optimization reduces force 15.6% without affecting absorption. This study provides insights application origami-inspired structures development high-performance braces.