ANALYSIS OF FREE VIBRATIONS OF MODERATELY THICK CYLINDRICAL SHELLS MADE OF FUNCTIONALLY GRADED MATERIALS USING DIFFERENTIAL QUADRATURE METHOD

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HOSSEINI HASHEMI SH.; KHORAMI K.

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Journal: Modares Mechanical Engineering Year:2011 | Volume:11 | Issue:2 Page(s): 93-106

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Title

ANALYSIS OF FREE VIBRATIONS OF MODERATELY THICK CYLINDRICAL SHELLS MADE OF FUNCTIONALLY GRADED MATERIALS USING DIFFERENTIAL QUADRATURE METHOD

Author(s)

HOSSEINI HASHEMI SH. | KHORAMI K. | Issue Writer Certificate

Keywords

WEIGHTING COEFFICIENTSQ2

GRID POINTSQ2

NATURAL FREQUENCYQ2

VOLUME FRACTIONQ2

Abstract

In this paper vibration frequency characteristics of functionally graded cylindrical (FGM) shells are investigated using the differential quadrature method (DQM). The essence of the differential quadrature method is that the partial derivative of a smooth function with respect to a variable is approximated by a weighted sum of function values at all discrete points in that direction. Its WEIGHTING COEFFICIENTS are not related to any special problem and only depend on the GRID POINTS and the derivative order. The material properties are graded in the thickness direction of the shell according to the VOLUME FRACTION power law distribution. The fast convergence behavior of the method is demonstrated and its accuracy is verified by comparing the results with those of other shell theories obtained using conventional methods and also with those of ABAQUS software. Effects of the exponential VOLUME FRACTION law on the natural frequencies of FGM cylindrical shells for classical boundary conditions (all possible combinations of clamped (C) and simply supported (S) boundary conditions) are studied against circumferential wave number, length to radius ratio and thickness to radius ratio for different values of power law exponents.

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APA: Copy

HOSSEINI HASHEMI, SH., & KHORAMI, K.. (2011). ANALYSIS OF FREE VIBRATIONS OF MODERATELY THICK CYLINDRICAL SHELLS MADE OF FUNCTIONALLY GRADED MATERIALS USING DIFFERENTIAL QUADRATURE METHOD. MODARES MECHANICAL ENGINEERING, 11(2), 93-106. SID. https://sid.ir/paper/178085/en

Vancouver: Copy

HOSSEINI HASHEMI SH., KHORAMI K.. ANALYSIS OF FREE VIBRATIONS OF MODERATELY THICK CYLINDRICAL SHELLS MADE OF FUNCTIONALLY GRADED MATERIALS USING DIFFERENTIAL QUADRATURE METHOD. MODARES MECHANICAL ENGINEERING[Internet]. 2011;11(2):93-106. Available from: https://sid.ir/paper/178085/en

IEEE: Copy

SH. HOSSEINI HASHEMI, and K. KHORAMI, “ANALYSIS OF FREE VIBRATIONS OF MODERATELY THICK CYLINDRICAL SHELLS MADE OF FUNCTIONALLY GRADED MATERIALS USING DIFFERENTIAL QUADRATURE METHOD,” MODARES MECHANICAL ENGINEERING, vol. 11, no. 2, pp. 93–106, 2011, [Online]. Available: https://sid.ir/paper/178085/en

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