A modified optimal design of a vibration absorber for ground motion isolation

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dc.contributor.author Issa, Jimmy S.
dc.date.accessioned 2018-02-08T10:08:19Z
dc.date.available 2018-02-08T10:08:19Z
dc.date.copyright 2014 en_US
dc.date.issued 2018-02-08
dc.identifier.isbn 978-0-7918-4962-0 en_US
dc.identifier.uri http://hdl.handle.net/10725/7054
dc.description.abstract Recently, a new vibration absorber setup was proposed where the absorber is placed between the dynamic system and its moving support. The problem was solved and design guidelines were proposed using the classical absorber design technique. In this work, the unique optimal absorber parameters are determined with the aim of minimizing the maximum of the primary system amplitude. For a given stiffness ratio of the system, the optimal mass and damping ratios are obtained analytically using an optimization method based on invariant points of the objective function. Similar to the case of the classical vibration absorber setup, these points are independent of the system damping ratio. It is shown that a trade-off relationship exists between these points, therefore the optimal mass ratio is determined first by a proper placement of the invariant points. Two suboptimal damping ratios are determined by forcing one of the two peaks of the objective function to coincide with one of the invariant points. Then, the optimal damping ratio is obtained from the average of the two suboptimal damping ratios. This approximate analytical solution is validated through comparison with the exact optimal parameters which were calculated numerically using two different numerical optimization methods. The first is based on the genetic algorithm technique and the second on the downhill simplex method. The optimal parameters are plotted and several examples are considered where the objective function is plotted in its approximate and exact optimal shapes. en_US
dc.language.iso en en_US
dc.publisher ASME en_US
dc.title A modified optimal design of a vibration absorber for ground motion isolation en_US
dc.type Conference Paper / Proceeding en_US
dc.author.school SOE en_US
dc.author.idnumber 200803943 en_US
dc.author.department Industrial And Mechanical Engineering en_US
dc.description.embargo N/A en_US
dc.identifier.doi http://dx.doi.org/10.1115/IMECE2014-36500 en_US
dc.identifier.ctation Issa, J. S. (2014, November). A Modified Optimal Design of a Vibration Absorber for Ground Motion Isolation. In ASME 2014 International Mechanical Engineering Congress and Exposition (pp. V013T16A007-V013T16A007). American Society of Mechanical Engineers. en_US
dc.author.email jimmy.issa@lau.edu.lb en_US
dc.conference.date November 14–20, 2014 en_US
dc.conference.pages V013T16A007 en_US
dc.conference.place Montreal, Quebec, Canada en_US
dc.conference.title ASME 2014 International Mechanical Engineering Congress and Exposition en_US
dc.identifier.tou http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php en_US
dc.identifier.url http://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=2205734 en_US
dc.publication.date 2014 en_US
dc.author.affiliation Lebanese American University en_US

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