Linear buckling and vibration analysis of plates, curved panels and cylindrical shells using semi-analytical finite strip method

سال انتشار: 1398
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 251

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شناسه ملی سند علمی:

ISME24_769

تاریخ نمایه سازی: 21 مهر 1398

چکیده مقاله:

In the current paper, the linear eigen buckling and vibration analysis of various composite laminated structures such as flat plates, curved panels and cylindrical shell are investigated individually. The method of analysis is the semi-analytical finite strip approach which is based on the full energy methods. In this method, the energies including potential, kinetic and external work integrations are computed analytically by implementing of trigonometric functions in the longitudinal direction of the strip. In comparison to the FEM, this method convergence needs small number of degrees of freedom which lead to less CPU time requirement. In semi-analytical approach, the estimate trigonometric functions limits the boundary conditions of the loaded ends of the strip to the simple supported and clamped ones. The first-order Lagrange and the third-order Hermitian shape functions are utilized for the transverse and longitudinal directions respectively to estimate in-plane and out of plane displacements. It is noted that in this paper the linear buckling and vibration analysis are investigated for both thick and thin structures and the linear layerwise theory is used for all cases. According to the authors knowledge the incorporation of layerwise theory into the formulations of the semi-analytical finite strip method for the buckling and vibration analysis of the structures has not been attempted elsewhere. To validate the results, some case studies results are compared with the commercial software ANSYS as well as those available in the literature.

نویسندگان

Abdolvahhab Rostami Javanani

Department of Aerospace Engineering, Amirkabir University of Technology, Tehran, Iran

Hamidreza Ovesy

Department of Aerospace Engineering, Amirkabir University of Technology, Tehran, Iran

Sina Jahedi

Department of Aerospace Engineering, Amirkabir University of Technology, Tehran, Iran