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Passive and Adaptiv...
Passive and Adaptive Damping Systems for Vibration Mitigation and Increased Fatigue Service Life of a Tied Arch Railway Bridge
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- Andersson, Andreas, 1980- (författare)
- KTH,Bro- och stålbyggnad,Swedish Transport Adm Trafikverket, Solna, Sweden
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- O'Connor, Alan (författare)
- Trinity College Dublin
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- Karoumi, Raid (författare)
- KTH,Bro- och stålbyggnad
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(creator_code:org_t)
- 2014-11-14
- 2015
- Engelska.
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Ingår i: Computer-Aided Civil and Infrastructure Engineering. - : Wiley. - 1093-9687 .- 1467-8667. ; 30:9, s. 748-757
- Relaterad länk:
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https://urn.kb.se/re...
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visa fler...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- n this article, the use of external damping systems for vibration mitigation of railway bridge dynamics is studied. For a presented case study bridge, the performance of different tuned mass damper systems (TMDs) is studied. During train passage, the change in dynamic characteristics of the bridge may produce a significant detune to a passive TMD. Therefore, routines for a variable stiffness TMD using incremental frequency estimates are developed. Based on numerical simulations, the cumulative fatigue damage is calculated for different damper systems. Due to resonant behavior, the results are found to highly depend on the train speed. Based on an assumed probability density function for the train speed, fragility curves are produced to express the probability of fatigue failure as a function of the number of train passages.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Samhällsbyggnadsteknik -- Infrastrukturteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Civil Engineering -- Infrastructure Engineering (hsv//eng)
Nyckelord
- Railway bridge dynamics
- tuned mass damper
- adaptive control
- finite element method
- fatigue
- fragility curve
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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