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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 국제구조공학회 Smart Structures and Systems, An International Journal Smart Structures and Systems, An International Journal Vol.27 No.5
- 발행연도
- 2021.1
- 수록면
- 819 - 836 (18page)
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초록· 키워드
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The objective of this study was to determine friction ratios that maximize energy dissipation on a seismic damper. The aforementioned friction damper basically consists of mass blocks that are able to slide on a flat surface. To carry out this analysis, a numerical-experimental approach was used. Firstly, the theoretical background and equations of motion for a SDOF system consisting of a mass supported on a flat surface with friction are introduced. Special emphasis is made on the fundamentals of stick-slip motion as well as energy considerations. Secondly, experimental studies carried out on a shaking table with harmonic and seismic records are described. These tests consisted of lead blocks contained on a U-shaped channel type aluminum section with its open end facing upwards. This configuration allowed blocks to slide solely in the direction of the base motion. Five different types of contact interfaces were considered to determine potential friction coefficients for the damper's design. Additionally, computational models based on rigid-body dynamics are presented. Numerical results were satisfactory particularly when comparing model's dissipated energy with empirical results. An analysis was carried out by calculating dissipated energy for the experimentally-calibrated models with varying friction ratios. For this purpose, eight near-fault seismic records were selected. Intervals with friction coefficients that maximize energy dissipation are proposed for each record. Finally, relationships between the computed friction ratios and register's peak ground acceleration (PGA) and root mean square acceleration (RMS) are discussed.
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참고문헌 (22)
참고문헌 신청
ANSYS, I. / 2010 / Theory reference / ANSYS, Inc
Arias, A. / 1970 / Seismic Design for Nuclear Power Plants / Massachusetts Institute of Technology Press
Paolo M. Calvi / 2018 / Historical development of friction-based seismic isolation systems / Soil Dynamics and Earthquake Engineering 106:14~30
Den Hartog, J. P. / 1931 / Forced vibrations with combined Coulomb and viscous friction / Transact. Am. Soc. Mech. Engr 53(1931):107~115
Sadegh Etedali / 2019 / MOCS-based optimum design of TMD and FTMD for tall buildings under near-field earthquakes including SSI effects / Soil Dynamics and Earthquake Engineering 119(2019):36~50
Arias, A. / 1970 / Seismic Design for Nuclear Power Plants / Massachusetts Institute of Technology Press
Paolo M. Calvi / 2018 / Historical development of friction-based seismic isolation systems / Soil Dynamics and Earthquake Engineering 106:14~30
Den Hartog, J. P. / 1931 / Forced vibrations with combined Coulomb and viscous friction / Transact. Am. Soc. Mech. Engr 53(1931):107~115
Sadegh Etedali / 2019 / MOCS-based optimum design of TMD and FTMD for tall buildings under near-field earthquakes including SSI effects / Soil Dynamics and Earthquake Engineering 119(2019):36~50
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