VIBRATION ANALYSIS OF FML CYLINDRICAL SHELL OPTIMIZED ACCORDING TO MAXIMUM NATURAL FREQUENCY UNDER VARIOUS BOUNDARY CONDITIONS

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NAZARI ALI; MALEKZADEH FARD KERAMAT; MAJIDIAN MILAD

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Journal: Modares Mechanical Engineering Year:2016 | Volume:16 | Issue:7 Page(s): 143-152

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Title

VIBRATION ANALYSIS OF FML CYLINDRICAL SHELL OPTIMIZED ACCORDING TO MAXIMUM NATURAL FREQUENCY UNDER VARIOUS BOUNDARY CONDITIONS

Author(s)

NAZARI ALI | MALEKZADEH FARD KERAMAT | MAJIDIAN MILAD | Issue Writer Certificate

Keywords

VIBRATIONQ2

LAYER SEQUENCEQ1

LAYER ORIENTATIONQ1

FIBER METAL LAMINATE SHELLQ1

Abstract

In this paper the arrangement of the fiber metal laminate for cylindrical shells to achieve the maximum natural frequencies is optimized. In order to maximize the FML shell natural frequencies the sequence of the composite –metal layers and fiber orientation are changed frequently and for each case, the sample natural frequency is calculated. Finally FML shell with maximum natural frequencies is found. Hamilton‘s principle and energy method is used to define the equation of motion and First order shear deformation theory (FSDT) is utilized for VIBRATION analysis in the shell’s equilibrium equation .In order to solve free VIBRATION problem the double Fourier series is used to obtain the eigenvalue problem. For this purpose, through a MATLAB program linked to the finite element software of ABAQUS, different shells with various LAYER SEQUENCE and fiber orientation are created and studied from optimization aspect. This comprehensive program is able to analyze the FML shells with various arrangements of composite –metal layers, fiber orientation and boundary condition. The simply-simply and clamp-clamp boundary conditions are applied on edges. The applicable fiber orientations are 0,30,60,90 degrees.

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APA: Copy

NAZARI, ALI, MALEKZADEH FARD, KERAMAT, & MAJIDIAN, MILAD. (2016). VIBRATION ANALYSIS OF FML CYLINDRICAL SHELL OPTIMIZED ACCORDING TO MAXIMUM NATURAL FREQUENCY UNDER VARIOUS BOUNDARY CONDITIONS. MODARES MECHANICAL ENGINEERING, 16(7), 143-152. SID. https://sid.ir/paper/178306/en

Vancouver: Copy

NAZARI ALI, MALEKZADEH FARD KERAMAT, MAJIDIAN MILAD. VIBRATION ANALYSIS OF FML CYLINDRICAL SHELL OPTIMIZED ACCORDING TO MAXIMUM NATURAL FREQUENCY UNDER VARIOUS BOUNDARY CONDITIONS. MODARES MECHANICAL ENGINEERING[Internet]. 2016;16(7):143-152. Available from: https://sid.ir/paper/178306/en

IEEE: Copy

ALI NAZARI, KERAMAT MALEKZADEH FARD, and MILAD MAJIDIAN, “VIBRATION ANALYSIS OF FML CYLINDRICAL SHELL OPTIMIZED ACCORDING TO MAXIMUM NATURAL FREQUENCY UNDER VARIOUS BOUNDARY CONDITIONS,” MODARES MECHANICAL ENGINEERING, vol. 16, no. 7, pp. 143–152, 2016, [Online]. Available: https://sid.ir/paper/178306/en

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