Enhancing Vibration Problem of Temperature-Dependent Functionally Graded Cylindrical Microshells Using Magneto-Electro-Elastic Micropatches

Peyman Roodgar Saffari1,Email

Jintara Lawongkerd1,Email

Thira Jearsiripongkul2

Chanachai Thongchom3

Pouyan Roodgar Saffari3

Suraparb Keawsawasvong4

1Department of Civil Engineering, Thammasat School of Engineering, Faculty of Engineering, Thammasat University, Pathumthani 12121, Thailand.
2Department of Mechanical Engineering, Thammasat School of Engineering, Faculty of Engineering, Thammasat University, Pathumthani 12121, Thailand.

3Research Unit in Structural and Foundation Engineering, Department of Civil Engineering, Faculty of Engineering, Thammasat School of Engineering, Thammasat University, Pathumthani, 12120, Thailand.

4Research Unit in Sciences and Innovative Technologies for Civil Engineering Infrastructures, Department of Civil Engineering, Faculty of Engineering, Thammasat School of Engineering, Thammasat University, Pathumthani, 12120, Thailand.

Abstract

This research offers a thorough theoretical investigation of the vibration behavior of functionally graded (FG) cylindrical microshells augmented with magneto-electro-elastic (MEE) micropatches, considering temperature-dependent material properties. The structure is further surrounded by a Pasternak elastic medium. Accurate modeling of structural behavior is achieved by employing the first-order shear deformation theory (FSDT). To account for the size effect, the modified strain gradient theory (MSGT) is employed. The analysis focuses on the temperature dispersion over the thickness of the microshell, examining three distinct profiles: uniform, harmonic non-uniform, and nonlinear. The FG core's material characteristics are temperature-dependent and distributed according to a power law. The associated equations of motion are generated by the application of Hamilton's principle and subsequently solved with the Galerkin technique in order to determine the natural frequencies. The impact of various parameters, including gradient index, length scale parameters, temperature variation, MEE patch characteristics, magnetic potential, Pasternak medium's parameters, and electric voltage on the free vibration behavior is thoroughly investigated. The findings of this study contribute to understanding the potential of MEE patches in enhancing the dynamic response of temperature-dependent FG cylindrical microshells, offering valuable insights for practical applications in micro-electro-mechanical systems (MEMS) and smart structures.

Enhancing Vibration Problem of Temperature-Dependent Functionally Graded Cylindrical Microshells Using Magneto-Electro-Elastic Micropatches