TY - JOUR
T1 - Emerging superelastic SMA core damping elements for seismic application
AU - Fang, Cheng
AU - Yam, Michael C.H.
N1 - Funding Information:
The financial supports from the National Natural Science Foundation of China (NSFC) with Grant Nos. 52078359 and 51778456 are gratefully acknowledged. Support for this study was also provided by the Shanghai Rising-Star Program (20QA1409400).
Publisher Copyright:
Copyright © 2023 Fang and Yam.
PY - 2023/1/4
Y1 - 2023/1/4
N2 - Structural and non-structural damage reported after recent strong earthquakes promotes a fundamental shift in structural design target from “collapse resistance” to “fast structural function recovery”. A unique class of metal called superelastic shape memory alloy (SMA) has been emerging as a promising solution to enhance the seismic resilience of structures. SMA core damping elements are the basic constituents of many newly-proposed seismic resistant members or devices, and they are directly responsible for the safety, integrity, and economical efficiency of the structures using them. This mini-review paper offers a comprehensive summary of the emerging SMA core damping elements recently developed, covering SMA monofilament wires, fibers, bars, flat plates, U-shaped plates, angles, cables, rings, helical springs, disc springs, and friction springs. These SMA core elements are suitable for various seismic application scenarios, and their efficiency have been verified through either full-scale or proof-of-concept experimental studies. The basic working principles, advantages, and potential shortcomings of these elements are discussed, and future research needs are outlined.
AB - Structural and non-structural damage reported after recent strong earthquakes promotes a fundamental shift in structural design target from “collapse resistance” to “fast structural function recovery”. A unique class of metal called superelastic shape memory alloy (SMA) has been emerging as a promising solution to enhance the seismic resilience of structures. SMA core damping elements are the basic constituents of many newly-proposed seismic resistant members or devices, and they are directly responsible for the safety, integrity, and economical efficiency of the structures using them. This mini-review paper offers a comprehensive summary of the emerging SMA core damping elements recently developed, covering SMA monofilament wires, fibers, bars, flat plates, U-shaped plates, angles, cables, rings, helical springs, disc springs, and friction springs. These SMA core elements are suitable for various seismic application scenarios, and their efficiency have been verified through either full-scale or proof-of-concept experimental studies. The basic working principles, advantages, and potential shortcomings of these elements are discussed, and future research needs are outlined.
KW - critical review
KW - damping
KW - seismic resilience
KW - self-centering
KW - shape memory alloy
UR - http://www.scopus.com/inward/record.url?scp=85150798108&partnerID=8YFLogxK
U2 - 10.3389/fbuil.2022.953273
DO - 10.3389/fbuil.2022.953273
M3 - Short survey
AN - SCOPUS:85150798108
SN - 2297-3362
VL - 8
JO - Frontiers in Built Environment
JF - Frontiers in Built Environment
M1 - 953273
ER -