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Compliant mechanism design using multi-objective topology optimization scheme of continuum structures

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Abstract

Topology optimization problems for compliant mechanisms using a density interpolation scheme, the rational approximation of material properties (RAMP) method, and a globally convergent version of the method of moving asymptotes (GCMMA) are primarily discussed. First, a new multi-objective formulation is proposed for topology optimization of compliant mechanisms, in which the maximization of mutual energy (flexibility) and the minimization of mean compliance (stiffness) are considered simultaneously. The formulation of one-node connected hinges, as well as checkerboards and mesh-dependency, is typically encountered in the design of compliant mechanisms. A new hybrid-filtering scheme is proposed to solve numerical instabilities, which can not only eliminate checkerboards and mesh-dependency efficiently, but also prevent one-node connected hinges from occurring in the resulting mechanisms to some extent. Several numerical applications are performed to demonstrate the validity of the methods presented in this paper.

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Authors and Affiliations

  1. Center for Computer-Aided Design, Huazhong University of Science & Technology, Wuhan, Hubei, 430074, P.R. China

    Z. Luo, L. Chen & Y. Zhang

  2. Center for Computer-Aided Design, The University of Iowa, 111 Engineering Research Facility, Iowa City, IA, 52246, USA

    J. Yang & K. Abdel-Malek

Authors
  1. Z. Luo
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  2. L. Chen
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  3. J. Yang
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  4. Y. Zhang
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  5. K. Abdel-Malek
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Correspondence to J. Yang.

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Luo, Z., Chen, L., Yang, J. et al. Compliant mechanism design using multi-objective topology optimization scheme of continuum structures. Struct Multidisc Optim 30, 142–154 (2005). https://doi.org/10.1007/s00158-004-0512-y

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  • DOI: https://doi.org/10.1007/s00158-004-0512-y

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