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Dynamic thermo-electro-mechanical behavior of smart composite laminates

This work is concerned with the dynamic thermo-electro-mechanical response of smart composite laminates (SCLs) integrated with homogeneous piezoelectric layers. It extends our earlier quasistatic model and accounts for the coupled dynamic behaviour of SCL; with the piezoelectric layers working as sm...

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Bibliographic Details
Published in:Nonlinear dynamics 2024-08, Vol.112 (16), p.13803-13824
Main Authors: Wu, Tongyu, Meguid, S. A.
Format: Article
Language:English
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Summary:This work is concerned with the dynamic thermo-electro-mechanical response of smart composite laminates (SCLs) integrated with homogeneous piezoelectric layers. It extends our earlier quasistatic model and accounts for the coupled dynamic behaviour of SCL; with the piezoelectric layers working as smart sensors or active actuators. In the current nonlinear dynamic model, the geometric nonlinearity is accounted for using von Kármán’s formulations and the displacement field is described using a third-order shear deformation hypothesis. The fully coupled thermo-electro-mechanical constitutive laws are applied using temperature dependent material properties. The resulting nonlinear system of partial differential equations is converted into a robust and efficient finite element (FE) model. The FE model is used to examine the thermal stress states, the natural frequencies and frequency responses of the SCL plate under different temperatures. The results of our extensive analysis show a decrease in the natural frequencies and increase in vibration amplitudes of the SCL plate with increased temperatures. This is due to the development of thermal stresses as well as the thermal sensitivity of the material properties. Additionally, our results reveal the thermal effects on the electric field, the voltage output of the piezoelectric sensors and the control efficiency of actuators.
ISSN:0924-090X
1573-269X
DOI:10.1007/s11071-024-09774-7