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Lightweight design and verification of gantry machining center crossbeam based on structural bionics

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Abstract

The lightweight and high efficiency of natural structures are the inexhaustible sources for engineering improvements. The goal of the study is to find innovative solutions for mechanical lightweight design through the application of structural bionic approaches. Giant waterlily leaf ribs and cactus stem are investigated for their optimal framework and superior performance. Their structural characteristics are extracted and used in the bio-inspired design of Lin MC6000 gantry machining center crossbeam. By mimicking analogous network structure, the bionic model is established, which has better load-carrying capacity than conventional distribution. Finite Element Method (FEM) is used for numerical simulation. Results show better specific stiffness of the bionic model, which is increased by 17.36%. Finally the scaled models are fabricated by precision casting for static and dynamic tests. The physical experiments are compared to numerical simulation. The results show that the maximum static deformation of the bionic model is reduced by about 16.22%, with 3.31% weight reduction. In addition, the first four natural frequencies are improved obviously. The structural bionic design is a valuable reference for updating conventional mechanical structures with better performance and less material consumption.

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Authors and Affiliations

  1. School of Automobile and Transportation Engineering, Liaocheng University, Liaocheng, 252059, P. R. China

    Ling Zhao & Hongliang Guo

  2. School of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing, 100124, P. R. China

    Jianfeng Ma

  3. School of Mechanical Engineering and Automation, Beihang University, Beijing, 100191, P. R. China

    Wuyi Chen

Authors
  1. Ling Zhao
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  2. Jianfeng Ma
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  3. Wuyi Chen
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  4. Hongliang Guo
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Correspondence to Ling Zhao.

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Zhao, L., Ma, J., Chen, W. et al. Lightweight design and verification of gantry machining center crossbeam based on structural bionics. J Bionic Eng 8, 201–206 (2011). https://doi.org/10.1016/S1672-6529(11)60021-8

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  • DOI: https://doi.org/10.1016/S1672-6529(11)60021-8

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