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Performance of viscous damping in inelastic seismic analysis of moment-frame buildings

Hall, John F. (2018) Performance of viscous damping in inelastic seismic analysis of moment-frame buildings. Earthquake Engineering and Structural Dynamics, 47 (14). pp. 2756-2776. ISSN 0098-8847.

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This paper investigates the performance of viscous damping in the inelastic seismic analysis of moment‐frame buildings using a detailed model of a 20‐story steel structure. Damping schemes included are Rayleigh, condensed Rayleigh, Wilson‐Penzien, tangent Rayleigh, elastic velocity Rayleigh, and capped damping. Caughey damping is found not to be computationally viable. Differences among the damping schemes, as quantified by plastic hinge rotations and story drifts, become noticeable once these quantities reach the 3% level. In order of least to greatest hinge rotations and story drifts that occur under lateral response to horizontal ground motion, the damping schemes rank as Rayleigh (most damping action), condensed Rayleigh, Wilson‐Penzien, tangent Rayleigh and capped damping, which are about the same, and elastic velocity Rayleigh (least damping action). Performance of Rayleigh damping under vertical ground motion is discussed, including the effect of soil‐structure interaction. The propensity of Rayleigh damping to generate excessive damping forces and moments during inelastic seismic analysis is explained, and a parameter is introduced that can predict the potential magnitude of the effect. A review of some literature on amplified Rayleigh damping moments is also presented.

Item Type:Article
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Hall, John F.0000-0002-7863-5060
Additional Information:© 2018 John Wiley & Sons, Ltd. Issue Online: 09 October 2018; Version of Record online: 06 September 2018; Manuscript accepted: 07 July 2018; Manuscript revised: 22 June 2018; Manuscript received: 09 April 2018.
Subject Keywords:inelastic seismic analysis; moment‐frame buildings; soil‐structure interaction; viscous damping
Issue or Number:14
Record Number:CaltechAUTHORS:20181024-134613535
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Official Citation:Hall JF. Performance of viscous damping in inelastic seismic analysis of moment‐frame buildings. Earthquake Engng Struct Dyn. 2018;47:2756–2776.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:90397
Deposited By: Tony Diaz
Deposited On:24 Oct 2018 20:52
Last Modified:03 Oct 2019 20:24

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