Dynamic analysis of composite beam with piezoelectric layers under thermo-mechanical load

Toudehdehghan, Abdolreza; Rahman, Mujibur; Nagi, Farrukh

doi:10.1088/1757-899x/257/1/012075

Cited by 2 publications

(1 citation statement)

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“…This model was used further in Erturk and Inman (2011) to analyze the electromechanical response of the piezoelectric beam to various types of dynamic loading, such as white noise or generic transient excitations, and to analyze the behavior of a non-linear piezomagnetoelastic energy harvester. Toudehdehghan et al (2017) modeled transversal vibrations of composite beams with piezoelectric actuators/sensors with uncoupled thermal environmental effects. The model is based on Timoshenko’s theory and basic piezoelectric relations.…”

Section: Current State Of the Artmentioning

confidence: 99%

Modeling of electromechanical response and fracture resistance of multilayer piezoelectric energy harvester with residual stresses

Machů

Ševeček

Hadaš

et al. 2020

Journal of Intelligent Material Systems and Structures

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The article focuses on a modeling and subsequent optimization of a novel layered architecture of the vibration piezoceramic energy harvester composed of ZrO2/Al2O3/BaTiO3 layers and containing thermal residual stresses. The developed analytical/numerical model allows to determine the complete electromechanical response and the apparent fracture toughness of the multilayer vibration energy harvester, upon consideration of thermal residual stresses and time-harmonic kinematic excitation. The derived model uses the Euler–Bernoulli beam theory, Hamilton’s variational principle, and a classical laminate theory to determine the first natural frequency, steady-state electromechanical response of the beam upon harmonic vibrations, and also the mechanical stresses within particular layers of the harvester. The laminate apparent fracture toughness is computed by means of the weight function approach. A crucial point is the further optimization of the layered architecture from both the electromechanical response and the fracture resistance point of view. Maximal allowable excitation acceleration of the harvester upon which the piezoelectric layer will not fail is determined. It makes possible to better use the harvester’s capabilities in a given application and simultaneously guarantee its safe operation. Outputs of the derived analytical model were validated with finite element method simulations and available experimental results, and a good agreement between all approaches was obtained.

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Section: Current State Of the Artmentioning

confidence: 99%