Size-dependent free vibration analysis of honeycomb sandwich microplates integrated with piezoelectric actuators based on the modified strain gradient theory

Hai, Tao; Al-Masoudy, Murtadha M.; Alsulamy, Saleh; Ouni, Mohamed Héchmi El; Ayvazyan, A.; Kumar, Abhinav

doi:10.1016/j.compstruct.2022.116555

Cited by 11 publications

(1 citation statement)

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“…Shahrokhi et al [15] utilized the modified couple stress theory to consider the size effect and studied the vibrational behaviors of sandwich piezoelectric micro-plate. Hai et al [16] investigated the vibrational behavior of a sandwich honeycomb rectangular microplate integrated with piezoelectric actuators and rested on the Pasternak elastic foundation based on the modified strain gradient theory. Furthermore, flexoelectric effect plays an important role in the electromechanical coupling phenomena at micro-and nano-scale.…”

Section: Introductionmentioning

confidence: 99%

Large deflection analysis of circular piezoelectric micro-actuator with flexoelectric effect

2023

Preprint

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At micro/nano scale, the stiffening effect and flexoelectric effect of strain gradient play important roles in the electromechanical coupling response of piezoelectric micro-components. In this paper, the large deflection bending problem of circular piezoelectric micro-actuator is studied based on the extended linear dielectric theory. In addition to the piezoelectric effect, the coupling of strain gradient to strain gradient is included to consider the stiffening effect, the coupling of strain gradient to polarization is considered to reflect the direct flexoelectric effect, the coupling of polarization gradient to strain is used to describe the inverse flexoelectric effect, and the coupling of polarization gradient to polarization gradient is introduced to capture the high-order electric field effect. A size-dependent model of circular piezoelectric micro-actuator is established to investigate the electromechanical coupling response of piezoelectric micro-actuator based on the variational principle. The contributions of piezoelectric effect and flexoelectric effect on large deflection behaviors of piezoelectric micro-actuator are revealed. It is hoped that the research results will be helpful to further understand the electromechanical coupling properties of piezoelectric micro-components and improve the control precision of piezoelectric micro-actuator.

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Section: Introductionmentioning

confidence: 99%