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Structural Engineering and Mechanics Volume 86, Number 6, June25 2023 , pages 765-778 DOI: https://doi.org/10.12989/sem.2023.86.6.765 |
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Free vibration and buckling analyses of curved plate frames using finite element method |
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Oguzhan Das, Hasan Ozturk and Can Gonenli
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| Abstract | ||
| This study investigates the free vibration and buckling analyses of isotropic curved plate structures fixed at all ends. The Kirchhoff-Love Plate Theory (KLPT) and Finite Element Method (FEM) are employed to model the curved structure. In order to perform the finite element analysis, a four-node quadrilateral element with 5 degrees of freedom (DOF) at each node is utilized. Additionally, the drilling effect (oz) is considered as minimal to satisfy the DOF of the structure. Lagrange's equation of motion is used in order to obtain the first ten natural frequencies and the critical buckling values of the structure. The effects of various radii of curvatures and aspect ratio on the natural frequency and critical buckling load values for the single-bay and twobay curved frames are investigated within this scope. A computer code based on finite element analysis is developed to perform free vibration and buckling analysis of curved plate frames. The natural frequency and critical buckling load values of the present study are compared with ANSYS R18.2 results. It has been concluded that the results of the present study are in good agreement with ANSYS results for different radii of curvatures and aspect ratio values of both single-bay and two-bay structures. | ||
| Key Words | ||
| buckling; curved plate frame; finite element method; free vibration; multi-bay plates | ||
| Address | ||
| Oguzhan Das: Department of Aeronautics Sciences, Air NCO Higher Vocational School, National Defence University, 35415, Izmir, Turkey; The Graduate School of Natural and Applied Sciences, Dokuz Eylül University, Tinaztepe Campus, Buca, Izmir, 35390, Turkey Hasan Ozturk: Department of Mechanical Engineering, Dokuz Eylül University, Tinaztepe Campus, Buca, Izmir, 35390, Turkey Can Gonenli: Department of Machine Drawing and Construction, Ege University, 35100, Izmir, Turkey | ||