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An adaptive method for high-resolution topology design

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Abstract

For the purpose of achieving high-resolution optimal solutions this paper proposes a nodal design variable-based adaptive method for topology optimization of continuum structures. The analysis mesh-independent density field, interpolated by the nodal design variables at a given set of density points, is adaptively refined/coarsened according to a criterion regarding the gray-scale measure of local regions. New density points are added into the gray regions and redundant ones are removed from the regions occupied by purely solid/void phases for decreasing the number of design variables. A penalization factor adaptivity technique is employed to prevent premature convergence of the optimization iterations. Such an adaptive scheme not only improves the structural boundary description quality, but also allows for sufficient further topological evolution of the structural layout in higher adaptivity levels and thus essentially enables high-resolution solutions. Moreover, compared with the case with uniformly and finely distributed density points, the proposed adaptive method can achieve a higher numerical efficiency of the optimization process.

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Authors and Affiliations

  1. State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, 116024, Dalian, China

    Yi-Qiang Wang, Jing-Jie He & Zhan Kang

  2. School of Electrical, Mechanical and Mechatronic Systems, University of Technology, Sydney, NSW, 2007, Australia

    Yi-Qiang Wang & Zhen Luo

  3. National Engineering Research Center of Shipbuilding, 116024, Dalian, China

    Zhan Kang

Authors
  1. Yi-Qiang Wang
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  2. Jing-Jie He
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  3. Zhen Luo
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  4. Zhan Kang
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Correspondence to Zhan Kang.

Additional information

The project was supported by the Key Project of Chinese National Programs for Fundamental Research and Development (2010CB832703) and the National Natural Science Foundation of China (11072047 and 91130025).

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Wang, YQ., He, JJ., Luo, Z. et al. An adaptive method for high-resolution topology design. Acta Mech Sin 29, 840–850 (2013). https://doi.org/10.1007/s10409-013-0084-4

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  • DOI: https://doi.org/10.1007/s10409-013-0084-4

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