Modeling and analysis of the electromechanical behavior of surface-bonded piezoelectric actuators using finite element method

TL;DR

This paper models and analyzes the static and dynamic electromechanical behavior of surface-bonded piezoelectric actuators using finite element analysis, highlighting the influence of material properties, bonding layers, and frequency on stress transfer.

Contribution

It provides a comprehensive finite element modeling approach and case studies for understanding actuator effects on structures, including effects of material and loading parameters.

Findings

Material properties significantly affect stress transfer.

Bonding layer characteristics influence actuator performance.

Frequency impacts the electromechanical response.

Abstract

Piezoelectric actuators have been widely used to form a self-monitoring smart system to do Structural health monitoring (SHM). One of the most fundamental issues in using actuators is to determine the actuation effects being transferred from the actuators to the host structure. This report summaries the state of the art of modeling techniques for piezoelectric actuators and provides a numerical analysis of the static and dynamic electromechanical behavior of piezoelectric actuators surface-bonded to an elastic medium under in-plane mechanical and electric loads using finite element method. Also case study is conducted to study the effect of material properties, bonding layer and loading frequency using static and harmonic analysis of ANSYS. Finally, stresses and displacements are determined, and singularity behavior at the tips of the actuator is proved. The results indicate that material properties, bonding layers and frequency have a significant influence on the stresses transferred to the host structure.