A novel steel-shape memory alloy hybrid damper for energy mitigation

Description:

This invention introduces a novel hybrid cushion damper that leverages the strengths of both steel and shape memory alloy (SMA) for optimized performance in energy dissipation and self-centering. The damper features a unique design where steel and SMA components are combined using specialized bolt configurations. The steel part adopts an oval shape for enhanced energy dissipation, while the SMA part, with its S-shape, contributes to the damper's self-centering ability. The design allows for the adjustment of the SMA part's curves to suit various damper sizes, enhancing both horizontal and vertical behaviors of the damper.

Key Advantages:

• Superior energy dissipation through the integration of steel and SMA materials.
• Enhanced self-centering capability due to the unique properties of shape memory alloys.
• Customizable performance through adjustable SMA curves.
• Improved structural resilience in both horizontal and vertical behaviors.
• Reduction in residual displacements of structures after seismic events.

Problems Solved:

• Insufficient energy dissipation in traditional damping systems.
• Lack of self-centering capability leading to permanent structural deformations post-earthquake.
• Inability to customize damper performance for specific structural needs.
• High residual displacements in moment-resisting frames after seismic activities.

Market Applications:

• Seismic retrofitting and reinforcement of existing structures.
• Construction of new buildings requiring advanced damping solutions.
• Infrastructure projects such as bridges and highways in earthquake-prone areas.
• Industrial applications where vibration control is critical.