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Structural Engineering and Mechanics Volume 93, Number 2, January25 2025 , pages 115-123 DOI: https://doi.org/10.12989/sem.2025.93.2.115 |
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Nonlinear thermal buckling of magneto-electro-thermal-elastic plates with geometric imperfection |
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Gui-Lin She and Yu-Jie He
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| Abstract | ||
| This article aims to investigate the thermal and post-buckling issues of magneto electro thermal elastic plates with initial geometric defects. Firstly, the nonlinear vibration equation is derived applying first-order shear deformation plate theory and energy method, which the influence of geometrical nonlinearity and geometric defects of the structure are considered. Then, during the solution process, we take into account three different boundary conditions and employ the Galerkin method to obtain the thermal buckling loads and thermal post-buckling path. The solution results of this article are well consistent with existing literatures, thus ensuring the reliability of the research. Finally, we are focused on the effects of material properties, electric potential, magnetic potential, geometric defects, and boundary conditions on the thermal and post-buckling responses of MEE plates. The results indicate that when there is initial geometric imperfection (W1=/0) in the MEE plates, as long as the temperature changes, the MEE plates will undergo bending deformation. As the voltage ascends or the magnetic potential descends, the thermal buckling loading and the thermal post-buckling strength will decline accordingly. | ||
| Key Words | ||
| geometrical imperfection; Magneto-electro-elastic plates; nonlinear; thermal post-buckling | ||
| Address | ||
| Gui-Lin She and Yu-Jie He: College of Mechanical and Vehicle Engineering, Chongqing University, Chongqing 400044, China | ||