Investigation of free and forced vibration of a composite circular cylindrical shell with internal fluid

Authors

1 MS.c, Mech. Eng., K. N. Toosi University of Technology, Tehran, Iran.

2 Prof., Mech. Eng., K. N. Toosi University of Technology, Tehran, Iran.

Abstract

The present study was aimed at investigating the vibration of composite cylindrical shell filled with internal liquid with simple two-headed boundary conditions. The shell was composed of multilayer composite. First-order shear theory was employed to solve the governing equations of the shell. First loves approximation theory was utilized to write strain-displacement and curvature-displacement equations. Natural frequencies of the composite cylindrical shell filled with fluid were calculated using minimum potential energy principle. The fluid was supposed to be ideal. According to the equations that were obtained through analytical solution, a computerized code was written using MATLAB software in order to achieve an answer for analyzing the vibrations of the shell. In order to make sure about the precision of the results, the composite cylindrical shell was modelled in Abacus Software, and modal analysis was carried out for it. Moreover, the effect of different parameters such as presence of fluid, the density and height of the fluid, the orientation of the fibers, and some geometrical parameters on the natural frequencies of the shell were investigated in empty and filled states of the shell. The transient dynamic response of the composite cylindrical shells filled with internal liquid that was under lateral impulse load was calculated through the principle of mode superposition. Finally, the effect of stable load and motivation frequency on the vibrations of the composite cylindrical shell was examined.

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Main Subjects

References

[1] Lam KY, Loy CT (1998) Influence of boundary conditions for a thin laminated cylindrical shells. Compos Struct 41: 215-228.
[2] Jafari AA, Khalili SMR, Azarafza R (2005) Transient dynamic response of composite circular cylindrical shells under radial impulse load and axial compressive loads. Thin Wall Struct 43: 1763-1786.
[3] Toorani MH, Lakis AA (2001) Shear deformation in dynamic analysis of anisotropic laminated open cylindrical shells filled with or subjected to a flowing fluid, Comput. Methods. Appl Mech Eng 190: 4929-4966.
[4] Gunawan H, Mikami TJ, Kanie T, Sato SM (2005) Free vibration of fluid-filled cylindrical shells on elastic foundations. Thin Wall Struct 43: 1746-1762.
[5] Jam JE, Nikjoo MA (2013) Buckling and free vibrations of cylindrical stiffened composite shells with internal liquid. Res J Appl Sci Eng Technol 6(19): 3495-3505.
[6] نیکجو م‌ع، جعفری ع (1390) بهینه سازی ارتعاشات آزاد پوسته­استوانه­ای کامپوزیتی تقویت شده محتوی مایع. پایان نامه کارشناسی ارشد، دانشگاه صنعتی خواجه نصیرالدین طوسی، دانشکده مهندسی مکانیک، گروه طراحی کاربردی.
[7] Khalili SMR, Azarafza R, Davar A (2009) Transient dynamic response of initially stressed composite circular cylindrical shells under radial impulse load. Compos Struct 89: 275-284.
[8] Yadav D, Verma N (1998) Free vibration of composite circular cylindrical shells with random material properties. Part I: General theory. Compos Struct 41: 331-338.
[9] قمری ع، جعفری ع (1388) بررسی ارتعاشات پوسته استوانه­ای کامپوزیتی لایه­ای  با سیال درونی. پایان نامه کارشناسی ارشد، دانشگاه صنعتی خواجه نصیرالدین طوسی، دانشکده مهندسی مکانیک.
[10] Jain RK (1974) Vibration of fluid-filled orthotropic cylindrical shells. J Sound Vib 37(3): 379-388.
[11] آذرافزا ر، جعفری ع، خلیلی س‌م (1384) بهینه سازی وزنی و دینامیکی پوسته­های استوانه­ای کامپوزیتی چند لایه. پایان نامه دکتری، دانشگاه صنعتی خواجه نصیر الدین طوسی، دانشکده مهندسی مکانیک، گروه طراحی کاربردی.
Journal of Solid and Fluid Mechanics
Volume 7, Issue 2
July and August 2017
Pages 93-109

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