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New Elemental Damping Model for Nonlinear Dynamic Response

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Advances in Nonlinear Dynamics, Volume I (ICNDA 2023)

Part of the book series: NODYCON Conference Proceedings Series ((NCPS))

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Abstract

In this chapter, a new elemental damping model has been proposed to incorporate un-modeled energy dissipation in the simulation of seismic response of large-scale structures. It addresses the problems of existing elemental damping models in calibrating an elemental damping ratio for a desired global damping ratio and unintended significant coupling effects between global vibration modes. The new model maintains consistency between the elemental and the global damping ratios and avoids unnecessary complex calibration. It also allows the elemental damping ratio to be better correlated with the states of elemental stresses, deformations, damage variables, or any other internal state variables, such that a rational-based update on the elemental damping ratio can be used to simulate unmodeled, changing energy dissipation during nonlinear dynamic response. Examples have been used to demonstrate the performance of the new model.

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Authors and Affiliations

  1. University of Canterbury, Christchurch, New Zealand

    Chin-Long Lee

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  1. Chin-Long Lee
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Correspondence to Chin-Long Lee .

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Editors and Affiliations

  1. Department of Structural and Geotechnical Engineering, Sapienza University of Rome, Roma, Roma, Italy

    Walter Lacarbonara

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Lee, CL. (2024). New Elemental Damping Model for Nonlinear Dynamic Response. In: Lacarbonara, W. (eds) Advances in Nonlinear Dynamics, Volume I. ICNDA 2023. NODYCON Conference Proceedings Series. Springer, Cham. https://doi.org/10.1007/978-3-031-50631-4_33

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