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A novel robust design method for improving stability of optimized structures

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Abstract

It is known that structural optimization may lead to designs of structures having low stability and sometimes even kinematically unstable designs. This paper presents a robust design method for improving the stability of optimized structures. A new approach is proposed, in which certain perturbation loads are introduced and the corresponding compliance is added to the objective function as a penalization. The stability of the optimized structures can thus be improved substantially by considering structural responses to the original and the introduced loads. Numerical examples show the simplicity and effectiveness of the proposed method.

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Authors and Affiliations

  1. State Key Laboratory of Subtropical Building Science, Department of Civil Engineering, South China University of Technology, 510640, Guangzhou, China

    Ming-Jie Cao, Hai-Tao Ma & Peng Wei

  2. State Key Laboratory of Structural Analysis of Industrial Equipment, Dalian University of Technology, 116023, Dalian, China

    Hai-Tao Ma

Authors
  1. Ming-Jie Cao
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  2. Hai-Tao Ma
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  3. Peng Wei
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Corresponding author

Correspondence to Hai-Tao Ma.

Additional information

The project was supported by State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, China (GZ1305) and the National Natural Science Foundation of China (11002058 and 11372004).

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Cao, MJ., Ma, HT. & Wei, P. A novel robust design method for improving stability of optimized structures. Acta Mech Sin 31, 104–111 (2015). https://doi.org/10.1007/s10409-015-0007-7

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  • DOI: https://doi.org/10.1007/s10409-015-0007-7

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