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Structural optimization with limited number of element properties

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Abstract

This note investigates the weight lost of a structure that presents a limited number of cross-sections for its members. A combined genetic algorithm-gradient approach is used to obtain the minimum weight structure for various numbers of cross-sections. The problem is investigated for the well known ten-bar truss structure. Results show that decreasing the number of cross-sections from nine to four has a small impact on the weight of approximately 5.3%.

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Authors and Affiliations

  1. Department of Aerospace Engineering, University of Bristol, Bristol, BS8 1TR, UK

    J. Enrique Herencia

  2. Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville, FL, 32611, USA

    Raphael T. Haftka

Authors
  1. J. Enrique Herencia
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  2. Raphael T. Haftka
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Correspondence to J. Enrique Herencia.

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Herencia, J.E., Haftka, R.T. Structural optimization with limited number of element properties. Struct Multidisc Optim 41, 817–820 (2010). https://doi.org/10.1007/s00158-009-0457-2

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  • DOI: https://doi.org/10.1007/s00158-009-0457-2

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