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Multidisciplinary optimization of a stiffened shell by genetic algorithm

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Abstract

Vibration analysis of simply supported rotating cross-ply laminated stiffened cylindrical shell is performed using an energy approach which includes variational and averaging method. The stiffeners include rings and stringers. The equations are obtained by Rayleigh-Ritz method and Sander’s relations. To validate the present method, the results are compared to the results available in other literatures. A good adoption is observed in different type of results including isotropic shells, rotating laminated shells, stiffened isotropic shells and stiffened laminated shells. Then, the optimization of parameters due to shell and stiffeners is conducted by genetic algorithm (GA) method under weight and frequency constraints. Stiffener shape, material properties and dimensions are also optimized.

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Authors and Affiliations

  1. School of Mechanical Engineering, K.N. Toosi University of Technology, Tehran, Iran

    Mahdi Maghsoudi Mehrabani & Ali Asghar Jafari

  2. School of Mechanical Engineering, Sharif University of Technology, Tehran, Iran

    Mohammad Azadi

Authors
  1. Mahdi Maghsoudi Mehrabani
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  2. Ali Asghar Jafari
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  3. Mohammad Azadi
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Correspondence to Mohammad Azadi.

Additional information

This paper was recommended for publication in revised form by Editor Maenghyo Cho

Mohammad Azadi received his B.S. in Mechanical Engineering from Shiraz University, Iran, in 2006. He then earned his M.S. from K.N. Toosi University of Technology in 2008. He is currently a Ph.D candidate at Sharif University of Technology. His research interests include NVH, Composites, FGMs, FEM, automotive engineering (especially engines and vehicle structure), TBC, and fatigue (HCF, LCF, and TMF).

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Mehrabani, M.M., Jafari, A.A. & Azadi, M. Multidisciplinary optimization of a stiffened shell by genetic algorithm. J Mech Sci Technol 26, 517–530 (2012). https://doi.org/10.1007/s12206-011-0912-z

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  • DOI: https://doi.org/10.1007/s12206-011-0912-z

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