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Free vibration and critical speed of moderately thick rotating laminated composite conical shell using generalized differential quadrature method

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Abstract

The generalized differential quadrature method (GDQM) is employed to consider the free vibration and critical speed of moderately thick rotating laminated composite conical shells with different boundary conditions developed from the first-order shear deformation theory (FSDT). The equations of motion are obtained applying Hamilton’s concept, which contain the influence of the centrifugal force, the Coriolis acceleration, and the preliminary hoop stress. In addition, the axial load is applied to the conical shell as a ratio of the global critical buckling load. The governing partial differential equations are given in the expressions of five components of displacement related to the points lying on the reference surface of the shell. Afterward, the governing differential equations are converted into a group of algebraic equations by using the GDQM. The outcomes are achieved considering the effects of stacking sequences, thickness of the shell, rotating velocities, half-vertex cone angle, and boundary conditions. Furthermore, the outcomes indicate that the rate of the convergence of frequencies is swift, and the numerical technique is superior stable. Three comparisons between the selected outcomes and those of other research are accomplished, and excellent agreement is achieved.

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Authors and Affiliations

  1. School of Mechanical Engineering, Iran University of Science and Technology, Tehran, 16846-13114, Iran

    K. Daneshjou & M. Talebitooti

  2. School of Automotive Engineering, Iran University of Science and Technology, Tehran, 16846-13114, Iran

    R. Talebitooti

Authors
  1. K. Daneshjou
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  2. M. Talebitooti
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  3. R. Talebitooti
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Correspondence to M. Talebitooti.

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Daneshjou, K., Talebitooti, M. & Talebitooti, R. Free vibration and critical speed of moderately thick rotating laminated composite conical shell using generalized differential quadrature method. Appl. Math. Mech.-Engl. Ed. 34, 437–456 (2013). https://doi.org/10.1007/s10483-013-1682-8

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  • DOI: https://doi.org/10.1007/s10483-013-1682-8

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Chinese Library Classification

2010 Mathematics Subject Classification

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