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Design Optimisation of Internally Reinforced Beams Subjected to Bending Loading

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Abstract:

In this work, novel types of internally reinforced hollow-box beams were structurally optimized using a Finite Element Updating code built in MATLAB. In total, 24 different beams were optimized under bending loads. A new objective function was defined in order to consider the balance between mass and deflection on relevant nodal points. New formulae were developed in order to assess the efficiency of the code and of the structures. The efficiency of the code is determined by comparing the Finite Element results of the optimized solutions using ANSYS with the initial solutions. It was concluded that the optimization algorithm, built in Sequential Quadratic Programming (SQP) allowed to improve the effective mechanical behavior under bending in 8500%.Therefore, the developed algorithm is effective in optimizing the novel FEM models under the studied conditions.

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Advanced Engineering Forum Vol. 28

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Periodical:

Advanced Engineering Forum (Volume 28)

Pages:

18-32

DOI:

https://doi.org/10.4028/www.scientific.net/AEF.28.18

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Online since:

June 2018

Authors:

Hugo Miguel Silva*, José Filipe Bizarro de Meireles

Keywords:

ANSYS, Finite Element Method, Hollow-Box Beam, MATLAB, Mechanical Behavior, Solid Mechanics, Structural Optimization

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© 2018 Trans Tech Publications Ltd. All Rights Reserved

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