Abstract
This paper describes the cyclic performance of non-uniform steel strip dampers. The shapes proposed are (a) a dumbbell-shaped strip, (b) a tapered strip, and (c) an hourglass-shaped strip. Each of these strip shapes was designed to reduce stress concentration when subjected to cyclic loadings. In order to evaluate the performance of the dampers, six specimens were tested cyclically. Cumulative damage caused by hysteretic motion was effectively distributed throughout the entire height of the strips, and SEM microstructures of the fracture surfaces represented a typical ductile failure mode. The experimental results showed that the proposed strip dampers indicate excellent seismic performance compared to conventional prismatic slit dampers. Furthermore, it was verified that structural performance can be accurately estimated using the design equations presented in the paper.
| Original language | English |
|---|---|
| Pages (from-to) | 192-204 |
| Number of pages | 13 |
| Journal | Engineering Structures |
| Volume | 99 |
| DOIs | |
| Publication status | Published - 2015 Sep 5 |
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Keywords
- Cyclic loading
- Energy dissipation device
- Flexural behavior
- Passive control system
- Strip damper
ASJC Scopus subject areas
- Civil and Structural Engineering
Cite this
Non-uniform steel strip dampers subjected to cyclic loadings. / Lee, Chang Hwan; Ju, Young-Kyu; Min, Jeong Ki; Lho, Seung Hee; Kim, Sang Dae.
In: Engineering Structures, Vol. 99, 05.09.2015, p. 192-204.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Non-uniform steel strip dampers subjected to cyclic loadings
AU - Lee, Chang Hwan
AU - Ju, Young-Kyu
AU - Min, Jeong Ki
AU - Lho, Seung Hee
AU - Kim, Sang Dae
PY - 2015/9/5
Y1 - 2015/9/5
N2 - This paper describes the cyclic performance of non-uniform steel strip dampers. The shapes proposed are (a) a dumbbell-shaped strip, (b) a tapered strip, and (c) an hourglass-shaped strip. Each of these strip shapes was designed to reduce stress concentration when subjected to cyclic loadings. In order to evaluate the performance of the dampers, six specimens were tested cyclically. Cumulative damage caused by hysteretic motion was effectively distributed throughout the entire height of the strips, and SEM microstructures of the fracture surfaces represented a typical ductile failure mode. The experimental results showed that the proposed strip dampers indicate excellent seismic performance compared to conventional prismatic slit dampers. Furthermore, it was verified that structural performance can be accurately estimated using the design equations presented in the paper.
AB - This paper describes the cyclic performance of non-uniform steel strip dampers. The shapes proposed are (a) a dumbbell-shaped strip, (b) a tapered strip, and (c) an hourglass-shaped strip. Each of these strip shapes was designed to reduce stress concentration when subjected to cyclic loadings. In order to evaluate the performance of the dampers, six specimens were tested cyclically. Cumulative damage caused by hysteretic motion was effectively distributed throughout the entire height of the strips, and SEM microstructures of the fracture surfaces represented a typical ductile failure mode. The experimental results showed that the proposed strip dampers indicate excellent seismic performance compared to conventional prismatic slit dampers. Furthermore, it was verified that structural performance can be accurately estimated using the design equations presented in the paper.
KW - Cyclic loading
KW - Energy dissipation device
KW - Flexural behavior
KW - Passive control system
KW - Strip damper
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UR - http://www.scopus.com/inward/citedby.url?scp=84929413312&partnerID=8YFLogxK
U2 - 10.1016/j.engstruct.2015.04.052
DO - 10.1016/j.engstruct.2015.04.052
M3 - Article
AN - SCOPUS:84929413312
VL - 99
SP - 192
EP - 204
JO - Engineering Structures
JF - Engineering Structures
SN - 0141-0296
ER -