Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
Heuristic optimization methodology applied to passive vibration control using constrained layers on plates
Submission Author:
SANDMARA LANHI , PR
Co-Authors:
SANDMARA LANHI, Luiz Otavio Rigobello Muraro, Jucélio Tomás Pereira
Presenter: SANDMARA LANHI
doi://10.26678/ABCM.COBEM2023.COB2023-1859
Abstract
Metallic plates and shells are structural elements that provide support for static and dynamic loads. They are also the main sources of noise and vibrations. One way to avoid these problems is to use passive vibration control through constrained layers (CLs). Typically, only a portion of the primary system area is covered by the CL to avoid excessive increases in mass and cost. Many optimization methods are employed to determine the optimal CL distribution. However, most optimization methods used require a lot of computational time to determine an optimum, even if it is not a global optimum. In addition, topological optimization methods based on finite elements can lead to the appearance of checkerboards. In this context, this work aims to present a heuristic topology optimization methodology, applied to the passive control of plate vibration using CL. The objective is to present a simple and efficient heuristic methodology that obtains good results for controlling vibrations in plates and that can minimize checkerboard effects. The evaluated objective function is the Euclidean norm of a component of the matrix inertance function, while the design variables correspond to the positions of the CLs. As results, the plate vibration control for the first four modes individually, the vibration control of two and for modes are presented.
Keywords
Viscoelastic material, Finite Element Method, Plates, Topology optimization
