Details
| Original language | English |
|---|---|
| Article number | e2275 |
| Journal | Structural Control and Health Monitoring |
| Volume | 26 |
| Issue number | 1 |
| Publication status | Published - Jan 2019 |
| Externally published | Yes |
Abstract
The effectiveness of distributed multiple tuned mass dampers (d-MTMDs) for multimode control of chimney for along-wind response is presented. A concrete chimney considered herein is an assemblage of two-dimensional (2D) beam elements, each assumed to have constant diameter over the element length. Along-wind forces are simulated using the Kaimal wind spectrum. The response of the chimney is to be controlled by installing tuned mass dampers (TMDs). Suitable locations of the TMDs are identified along height of the chimney based on its uncontrolled (NC) mode shapes. A TMD unit is placed where the mode shape amplitude of the chimney is the largest or larger in a particular mode to be controlled and is tuned with the corresponding modal frequency—the approach is called multimode vibration response control. The number of modes to be controlled is decided according to desired total modal mass participation. The coupled differential equations of motion for the system are derived and solved using Newmark's step-by-step iteration method. The displacement and acceleration responses of the chimney under the along-wind forces are computed to study the effectiveness of the d-MTMDs as compared with single tuned mass damper (STMD) and with arbitrarily installed d-MTMDs (ad-MTMDs). In addition, suitable mass and damping ratios for the STMD, ad-MTMDs, and d-MTMDs are obtained to achieve improved dynamic response control. It is observed that the d-MTMDs are effective controllers being designed as per vibration mode to be controlled.
Keywords
- chimney, frequency, mode shape, multimode control, tuned mass damper, wind
ASJC Scopus subject areas
- Engineering(all)
- Civil and Structural Engineering
- Engineering(all)
- Building and Construction
- Engineering(all)
- Mechanics of Materials
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In: Structural Control and Health Monitoring, Vol. 26, No. 1, e2275, 01.2019.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Along-wind response control of chimneys with distributed multiple tuned mass dampers
AU - Elias, Said
AU - Matsagar, Vasant
AU - Datta, Tushar Kanti
N1 - Publisher Copyright: © 2018 John Wiley & Sons, Ltd.
PY - 2019/1
Y1 - 2019/1
N2 - The effectiveness of distributed multiple tuned mass dampers (d-MTMDs) for multimode control of chimney for along-wind response is presented. A concrete chimney considered herein is an assemblage of two-dimensional (2D) beam elements, each assumed to have constant diameter over the element length. Along-wind forces are simulated using the Kaimal wind spectrum. The response of the chimney is to be controlled by installing tuned mass dampers (TMDs). Suitable locations of the TMDs are identified along height of the chimney based on its uncontrolled (NC) mode shapes. A TMD unit is placed where the mode shape amplitude of the chimney is the largest or larger in a particular mode to be controlled and is tuned with the corresponding modal frequency—the approach is called multimode vibration response control. The number of modes to be controlled is decided according to desired total modal mass participation. The coupled differential equations of motion for the system are derived and solved using Newmark's step-by-step iteration method. The displacement and acceleration responses of the chimney under the along-wind forces are computed to study the effectiveness of the d-MTMDs as compared with single tuned mass damper (STMD) and with arbitrarily installed d-MTMDs (ad-MTMDs). In addition, suitable mass and damping ratios for the STMD, ad-MTMDs, and d-MTMDs are obtained to achieve improved dynamic response control. It is observed that the d-MTMDs are effective controllers being designed as per vibration mode to be controlled.
AB - The effectiveness of distributed multiple tuned mass dampers (d-MTMDs) for multimode control of chimney for along-wind response is presented. A concrete chimney considered herein is an assemblage of two-dimensional (2D) beam elements, each assumed to have constant diameter over the element length. Along-wind forces are simulated using the Kaimal wind spectrum. The response of the chimney is to be controlled by installing tuned mass dampers (TMDs). Suitable locations of the TMDs are identified along height of the chimney based on its uncontrolled (NC) mode shapes. A TMD unit is placed where the mode shape amplitude of the chimney is the largest or larger in a particular mode to be controlled and is tuned with the corresponding modal frequency—the approach is called multimode vibration response control. The number of modes to be controlled is decided according to desired total modal mass participation. The coupled differential equations of motion for the system are derived and solved using Newmark's step-by-step iteration method. The displacement and acceleration responses of the chimney under the along-wind forces are computed to study the effectiveness of the d-MTMDs as compared with single tuned mass damper (STMD) and with arbitrarily installed d-MTMDs (ad-MTMDs). In addition, suitable mass and damping ratios for the STMD, ad-MTMDs, and d-MTMDs are obtained to achieve improved dynamic response control. It is observed that the d-MTMDs are effective controllers being designed as per vibration mode to be controlled.
KW - chimney
KW - frequency
KW - mode shape
KW - multimode control
KW - tuned mass damper
KW - wind
UR - http://www.scopus.com/inward/record.url?scp=85055487674&partnerID=8YFLogxK
U2 - 10.1002/stc.2275
DO - 10.1002/stc.2275
M3 - Article
AN - SCOPUS:85055487674
VL - 26
JO - Structural Control and Health Monitoring
JF - Structural Control and Health Monitoring
SN - 1545-2255
IS - 1
M1 - e2275
ER -