The novel design of an energy dissipation device by bistability for structural bracing

Hongyu Li; Ying Zhang; Lu Zhang

doi:10.1117/12.2657618

18 April 2023 The novel design of an energy dissipation device by bistability for structural bracing

Hongyu Li, Ying Zhang, Lu Zhang

Proceedings Volume 12484, Behavior and Mechanics of Multifunctional Materials XVII; 124840E (2023) https://doi.org/10.1117/12.2657618
Event: SPIE Smart Structures + Nondestructive Evaluation, 2023, Long Beach, California, United States

Abstract

In high-rise building structures, only using structural stiffness to resist the seismic energy is not economic and effective. Therefore, various energy dissipation devices are deployed to the structure, such as friction type energy dissipation device, Buckling Restrained Bracing (BRB) and viscous damper. Many researchers have been working on improving the performance of the dissipation devices. Though the plastic or residual deformation after earthquakes can consume the energy, the irreversible damage was introduced. In addition, its capability highly depends on the materials. Therefore, we proposes to take advantage of the mechanical bistablity to design a novel energy dissipation device, Mechanical bistability is defined as availability of two stable equilibrium configurations in the structure in response to the same loading conditions. The bistablity was realize by constructing a mechanical metamaterial: the snapping and buckling behavior were used to control the multistable response. The load-displacement curve was obtained by the analytical model. The results show that bistable stage was achieved. With bistablity and hysteretic characteristics, the proposed design can dissipate considerable energy. It provides a new strategy to develop the energy dissipation device.

Conference Presentation

Citation Download Citation

Hongyu Li, Ying Zhang, and Lu Zhang "The novel design of an energy dissipation device by bistability for structural bracing", Proc. SPIE 12484, Behavior and Mechanics of Multifunctional Materials XVII, 124840E (18 April 2023); https://doi.org/10.1117/12.2657618

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