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Active Vibration Control of Piezoelectric Sandwich Plates
Zhicheng Huang1, Yuhang Mao1, Anna Dai1
1College of Mechanical and Electrical Engineering, Jingdezhen Ceramic University, Jingdezhen 333001, China.
Materials (Basel, Switzerland)
|June 10, 2022
Summary
This study demonstrates active vibration control for piezoelectric sandwich plates. Optimal placement of piezoelectric patches enhances control effectiveness and reduces costs, particularly at fixed ends.
Area of Science:
- Mechanical Engineering
- Materials Science
- Control Systems Engineering
Background:
- Piezoelectric sandwich plates are advanced composite structures.
- Active vibration control is crucial for structural integrity and performance.
- Understanding the dynamic behavior of these structures is essential.
Purpose of the Study:
- To establish and solve the dynamic equation for active vibration control of piezoelectric sandwich plates.
- To investigate the influence of boundary conditions, piezoelectric patch placement, and driving voltage on structural dynamics.
- To evaluate the effectiveness of active vibration control strategies.
Main Methods:
- Utilizing laminate theory and piezoelectric constitutive equations.
- Employing the hypothetical mode method and Hamilton's principle to derive dynamic equations.
- Applying the Rayleigh-Ritz method with a hypothetical solution for approximate analysis.
- Conducting parametric studies and simulations.
Main Results:
- Natural frequencies are significantly influenced by boundary conditions and piezoelectric patch positions.
- Plate deflection increases approximately linearly with driving voltage.
- Active vibration control effectiveness is enhanced by increasing the speed feedback coefficient within a specific range.
- Piezoelectric patch location critically impacts control effectiveness and cost.
Conclusions:
- The developed method accurately models and controls piezoelectric sandwich plate vibrations.
- Strategic placement of piezoelectric patches, especially at fixed ends, optimizes active vibration control.
- This research provides insights for designing efficient vibration control systems in smart structures.
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