FREE VIBRATION ANALYSIS OF ROTATING GRID STIFFENED COMPOSITE CYLINDRICAL SHELLS

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Zareii Mehdi; RAHIMI GHOLAM HOSSEIN

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Journal: Modares Mechanical Engineering Year:2016 | Volume:16 | Issue:9 Page(s): 175-185

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Information Journal Paper

Title

FREE VIBRATION ANALYSIS OF ROTATING GRID STIFFENED COMPOSITE CYLINDRICAL SHELLS

Author(s)

Zareii Mehdi | RAHIMI GHOLAM HOSSEIN | Issue Writer Certificate

Keywords

FREE VIBRATIONSQ2

ROTATINGQ1

GRID STIFFENEDQ1

STOKES’ TRANSFORMATIONQ2

Abstract

Rotating cylindrical shells are applied in different industrial applications, such as gas turbine engines, electric motors, rotary kilns and rotor systems. So, it is of great interest to conduct some researches to improve the understanding of vibrational characteristics of ROTATING cylindrical shells. GRID STIFFENED laminated composite cylindrical shells are used as components of aerospace, marine industries and civil engineering structures. In this research free vibration of ROTATING GRID STIFFENED composite cylindrical shell with various boundary conditions using the Fourier series expansion method is presented. Smeared method is employed to superimpose the stiffness contribution of the stiffeners with those of shell in order to obtain the equivalent stiffness parameters of the whole structure. The stiffeners are considered as a beam and support shear loads and bending moments in addition to the axial loads. Strain displacement relations from Sanders's shell theory are employed in the analysis. Using the Fourier series expansion and STOKES’ TRANSFORMATION, frequency determinant of laminated cylindrical shells is derived.The effects of shell geometrical parameters and changes in the cross stiffeners angle and axial loading on the natural frequencies are investigated. Results given are novel and can be used as a benchmark for further studies.

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APA: Copy

Zareii, Mehdi, & RAHIMI, GHOLAM HOSSEIN. (2016). FREE VIBRATION ANALYSIS OF ROTATING GRID STIFFENED COMPOSITE CYLINDRICAL SHELLS. MODARES MECHANICAL ENGINEERING, 16(9), 175-185. SID. https://sid.ir/paper/179763/en

Vancouver: Copy

Zareii Mehdi, RAHIMI GHOLAM HOSSEIN. FREE VIBRATION ANALYSIS OF ROTATING GRID STIFFENED COMPOSITE CYLINDRICAL SHELLS. MODARES MECHANICAL ENGINEERING[Internet]. 2016;16(9):175-185. Available from: https://sid.ir/paper/179763/en

IEEE: Copy

Mehdi Zareii, and GHOLAM HOSSEIN RAHIMI, “FREE VIBRATION ANALYSIS OF ROTATING GRID STIFFENED COMPOSITE CYLINDRICAL SHELLS,” MODARES MECHANICAL ENGINEERING, vol. 16, no. 9, pp. 175–185, 2016, [Online]. Available: https://sid.ir/paper/179763/en

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