Development of a shape memory alloy-based friction damper and its experimental characterization considering rate and temperature effects

Asfaw, Amedebrhan M.; Cao, Liang; Ozbulut, Osman E.; Ricles, James M.

doi:10.1016/j.engstruct.2022.115101

Cited by 9 publications

(2 citation statements)

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“…A prototype damper was fabricated and tested with different configurations and loading conditions (Asfaw et al, 2022). SMA cables made of NiTi and with an outer diameter of 8 mm and total length of 500 mm was used in the damper.…”

Section: Superelastic Friction Dampermentioning

confidence: 99%

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A hybrid self-centering seismic damper: Finite element modeling and parametric analysis

Cao,

Shi,

Cao

et al. 2024

Journal of Intelligent Material Systems and Structures

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This study presents a finite element model for a hybrid self-centering damper considering the rate and temperature effects and explores the effects of different design parameters on the damper response. The damper, called as superelastic friction damper (SFD), consists of superelastic shape memory alloy (SMA) cables and a frictional energy dissipation mechanism. The experimental response of the SMA cables, frictional unit and overall damper at different loading frequencies and temperature are used to develop numerical model of the damper. Once a validated numerical model is obtained, parametric studies are carried out to evaluate force-displacement response of the damper when the design parameters are altered. The effects of damper design parameters on the equivalent stiffness, dissipated energy, equivalent viscous damping and self-centering capabilities of the damper are analyzed. Based on the findings, the recommendations for the design of the damper are presented.

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Section: Superelastic Friction Dampermentioning

confidence: 99%

“…However, due to the limitations in actuator force capacity, these tests were conducted at a displacement amplitude of 20 mm and at only room temperature. A detailed description of the experimental program is provided in (Asfaw et al, 2022).…”

Section: Superelastic Friction Dampermentioning

confidence: 99%