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 publicationNodycon 2021
PublisherSpringer
Publication statusAccepted/In press - 2021
Event2021 Second International Nonlinear Dynamics Conference - Online event
Duration: 16 Feb 202119 Feb 2021

Conference

Conference2021 Second International Nonlinear Dynamics Conference
CityOnline event
Period16/02/202119/02/2021

Keywords

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

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