| Autor: |
Basu, Debalina, Pramanik, Subhankar, Das, Sreyashi, Niyogi, Arup Guha |
| Zdroj: |
Iranian Journal of Science and Technology. Transactions of Mechanical Engineering; June 2023, Vol. 47 Issue: 2 p697-716, 20p |
| Abstrakt: |
The application of folded plate structures has always been relevant in different fields of engineering. Application of smart materials has only enhanced the use of these spatial structures. However, research on functionally graded folded plates is relatively scanty. Our research includes study of free vibration response of functionally graded folded plates using finite element method considering first-order shear deformation theory and rotary inertia. Young’s modulus and density per unit volume are varied continuously in the thickness direction following the power-law distribution. The accuracy and applicability of the finite element model used are demonstrated through proper validation with available results in published literature and commercial packages. Effects of altering plate materials, thicknesses, boundary conditions and gradient indices on the natural frequencies of functionally graded rectangular folded plates are presented and compared with flat plate without fold. A detailed parametric study has been performed which could be useful for future research. Numerical results reveal that thickness and boundary conditions play a significant role on the natural frequencies of functionally graded folded plates. The variation in natural frequency is more prominent for higher thicknesses and high crank angle. Further, it has been shown that the folded plate formulation using appropriate transformation matrices can be used to model box sections also. Thus, this study could be extended to the study of structures like aircraft wings. |
| Databáze: |
Supplemental Index |
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