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A new approach for optimizing automotive crashworthiness: concurrent usage of ANFIS and Taguchi method

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Abstract

Design optimization is presented for the crashworthiness improvement of an automotive body structure. The optimization objective was to improve automotive crashworthiness conditions according to the defined criterion (occupant chest deceleration) during a full frontal impact. The controllable factors used in this study consisted of six internal parts of the vehicle’s frontal structure in a condition that their thickness was the “design parameter”. First using the Taguchi method, this study analyzed the optimum conditions in discontinuous design area and impact factors and their optimal levels of design objectives were obtained by analyzing the experimental results. Next to model a precise understanding of the explicit mathematical input–output relationship, fuzzy logic is utilized which make use of full factorial design set of experimental test cases resulted from Taguchi predicting formulations. Interestingly, the optimum conditions for automotive crashworthiness occurred with 2.72 % improvement in the defined crashworthiness criterion in comparison with the baseline design while selected structural parts experienced mass reduction by 8.23 %.

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Acknowledgments

The authors would like to appreciate to Dhafer Marzougui, Pradeep Mohan, Vinay Nagabhushana and Steve Kan from FHWA/NHTSA National Crash Analysis Center (NCAC) at the George Washington University for providing vehicle FEM model.

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Authors and Affiliations

  1. Department of Mechanical Engineering, Payame Noor University, Bushehr, Iran

    Milad Abbasi

  2. Department of Mechanical and Industrial Engineering, University of Brescia, Brescia, Italy

    Ali Ghafari-Nazari

  3. School of Aerospace Mechanical and Manufacturing Engineering, RMIT University, Melbourne, Australia

    Sekhar Reddy & Mohammad Fard

Authors
  1. Milad Abbasi
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  2. Ali Ghafari-Nazari
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  3. Sekhar Reddy
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  4. Mohammad Fard
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Correspondence to Milad Abbasi.

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Abbasi, M., Ghafari-Nazari, A., Reddy, S. et al. A new approach for optimizing automotive crashworthiness: concurrent usage of ANFIS and Taguchi method. Struct Multidisc Optim 49, 485–499 (2014). https://doi.org/10.1007/s00158-013-0986-6

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  • DOI: https://doi.org/10.1007/s00158-013-0986-6

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