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Auxetic microstructures for enhancement of vibration suppression through piezolectric patches. A finite element study

Michali Aikaterini-Maria

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Summary

The study of auxetic microstructures and piezoelectric patches using finite elements to reduce vibrations represents a significant research field aiming at developing advanced technologies to enhance performance and safety in various structural constructions.Auxetic microstructures constitute a crucial part of technological advancement, offering new capabilities for controlling and improving material and structural characteristics. The use of piezoelectric elements contributes to the creation of flexible control systems capable of adapting to changing conditions. Improving microstructures to reduce vibrations requires advanced modeling and analysis methods. The utilization of finite elements allows for an efficient approach to the dynamic characteristics of structures, while piezoelectric sensors and actuators are integrated for vibration control and adaptation.Specifically, this dissertation investigates how a piezoelectric patch positioned at the end of a beam interacts with concurrent augmentative microstructures located between the patch and the beam, with the aim of damping vibrations induced by external loads. To assess the effectiveness of the proposed method, finite element methods (FEM) and simulation software such as Comsol Multiphysics and Autodesk's Inventor are employed for design and modeling in two-dimensional and three-dimensional spaces.Upon completing the structural processing stages, conclusions will be drawn based on the results to improve methods for producing structural materials, and solutions will be proposed for the effectiveness of this structures for future applications of the method in various structural constructions.

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