Smart structures: modeling, analysis, and control with different strategies

Nader Ghareeb; Mohamed Gaith; Sayed Soleimani

doi:10.1117/12.2258580

19 April 2017 Smart structures: modeling, analysis, and control with different strategies

Nader Ghareeb, Mohamed Gaith, Sayed Soleimani

Proceedings Volume 10169, Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, and Civil Infrastructure 2017; 101691W (2017) https://doi.org/10.1117/12.2258580
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2017, Portland, Oregon, United States

Abstract

Weight optimization of structures can result in lower stiffness and less internal damping, causing the structure to become excessively prone to vibration. To overcome this problem, active or smart materials are implemented. The coupled electromechanical properties of smart materials, used in the form of piezoelectric ceramics in this work, make these materials well-suited for being implemented as distributed sensors and actuators to control the structural response. The smart structure proposed in this paper is composed of a cantilevered steel beam, an adhesive or bonding layer, and a piezoelectric actuator. The static deflection of the structure is derived as function of the piezoelectric voltage, and the outcome is compared to theoretical and experimental results from literature. The relation between the voltage and the piezoelectric moment at both ends of the actuator is also investigated and a reduced finite element model of the smart structure is created and verified. Finally, different linear controllers are implemented and its ability to attenuate the vibration due to the first Eigen frequency is demonstrated.

Conference Presentation

Citation Download Citation

Nader Ghareeb, Mohamed Gaith, and Sayed Soleimani "Smart structures: modeling, analysis, and control with different strategies", Proc. SPIE 10169, Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, and Civil Infrastructure 2017, 101691W (19 April 2017); https://doi.org/10.1117/12.2258580

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