Numerical Evaluation of Bell-Shaped Proportional Damping Model for Softening Structures

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dc.contributor.authorLee, Chin-Long
dc.contributor.authorChang, Theodore L.
dc.date.accessioned2022-10-25T00:12:57Z
dc.date.available2022-10-25T00:12:57Z
dc.date.issued2022en
dc.date.updated2022-08-16T23:41:31Z
dc.description.abstractA new type of proportional damping models, called bell-shaped proportional damping model, has recently been proposed. This new model has not only addressed the spurious damping forces, but also maintained the same order of computational efficiency as the Rayleigh model. This model has also been further improved such that, by using the tangent stiffness approach, it becomes suitable for structures experiencing softening response with negative stiffness. The improved model allows users to have flexible control of modal damping ratio for all interested frequency intervals, including those associated with negative stiffness. In this study, the performance of bell-shaped damping model is evaluated numerically in a response history analysis of a multi-storey building under seismic loading. The results show that, compared to the Rayleigh model, the bell-shaped model performs excellently in terms of always giving desirable positive energy dissipation even when the structure is experiencing softening response.en
dc.identifier.citationLee C, Chang T Numerical Evaluation of Bell-Shaped Proportional Damping Model for Softening Structures. 15th World Congress on Computational Mechanics (WCCM-XV) and 8th Asian Pacific Congress on Computational Mechanics (APCOM-VIII). 15th World Congress on Computational Mechanics (WCCM-XV) and 8th Asian Pacific Congress on Computational Mechanics (APCOM-VIII).en
dc.identifier.doihttp://doi.org/10.23967/wccm-apcom.2022.083
dc.identifier.urihttps://hdl.handle.net/10092/104594
dc.language.isoenen
dc.publisherCIMNEen
dc.rightsAll rights reserved unless otherwise stateden
dc.rights.urihttp://hdl.handle.net/10092/17651en
dc.subjectProportional Dampingen
dc.subjectBell-Shaped Modelen
dc.subjectSoftening Responseen
dc.subjectNegative Stiffnessen
dc.subject.anzsrcFields of Research::40 - Engineering::4017 - Mechanical engineering::401702 - Dynamics, vibration and vibration controlen
dc.subject.anzsrcFields of Research::40 - Engineering::4017 - Mechanical engineering::401706 - Numerical modelling and mechanical characterisationen
dc.subject.anzsrcFields of Research::40 - Engineering::4005 - Civil engineering::400506 - Earthquake engineeringen
dc.subject.anzsrcFields of Research::40 - Engineering::4005 - Civil engineering::400509 - Structural dynamicsen
dc.titleNumerical Evaluation of Bell-Shaped Proportional Damping Model for Softening Structuresen
dc.typeConference Contributions - Publisheden
uc.collegeFaculty of Engineering
uc.departmentCivil and Natural Resources Engineering
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