An Improved Formulation for Structural Optimization of Nonlinear Dynamic Response

Suguang Dou*

*Corresponding author for this work

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

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    Abstract

    Nonlinear dynamics is widely exploited in micro-mechanical resonators with a number of applications. One of the crucial issues in these applications is to intentionally tailor the intrinsic nonlinearity in these structures. In this study, a structural optimization methodology is improved for tailoring the intrinsic nonlinearity in these resonators by manipulating their structural geometry. In the optimization, the objective function is defined based on the nonlinear modal coupling coefficients as well as eigenfrequencies and modal shapes of the vibration modes. A preliminary study shows that the improved formulation of the optimization problem enables better designs.
    Original languageEnglish
    Title of host publicationAdvances in Nonlinear Dynamics: Proceedings of the Second International Nonlinear Dynamics Conference (NODYCON 2021)
    EditorsWalter Lacarbonara, Balakumar Balachandrian, Michael J. Leamy, Jun Ma, J. A. Tenreio Machado, Gabor Stepan
    Number of pages10
    Volume1
    PublisherSpringer
    Publication date2022
    Pages433-442
    ISBN (Print)978-3-030-81161-7, 978-3-030-81164-8
    ISBN (Electronic)978-3-030-81162-4
    DOIs
    Publication statusPublished - 2022
    EventNODYCON 2021: Second International Nonlinear Dynamics Conference - online, Rome, Italy
    Duration: 16 Feb 202119 Feb 2021
    Conference number: 1
    https://nodycon.org/2021/

    Conference

    ConferenceNODYCON 2021
    Number1
    Locationonline
    Country/TerritoryItaly
    CityRome
    Period16/02/202119/02/2021
    Internet address
    SeriesNODYCON Conference Proceedings Series
    ISSN2730-7689

    Keywords

    • Nonlinear dynamics
    • Shape optimization
    • Finite element
    • Model order reduction
    • Adjoint method

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