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Wave propagation in head on bonnet impact: Material and design issues

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Abstract

Head on bonnet impact is becoming more and more important in automotive design as regulations on pedestrian safety become more demanding. Despite the relatively low amount of energy involved, these impacts are truly dynamic phenomena as the event duration is comparable with the traveling time of the different wavefronts generated by the impact. In this paper, we show that we can build up a simplified model for the impact based on wave propagation analysis. Using this model, we can analyze head acceleration on existing bonnets or predict it on new ones. Head acceleration in a bonnet impact can thus be estimated over the whole area of the bonnet with a few minutes of CPU.

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Authors and Affiliations

  1. ENSIAME, Mont Houy, F-59313, Valenciennes, France

    Edmondo Di Pasquale & Daniel Coutellier

  2. LAMIH UMR CNRS 8201, Université de Valenciennes, F-59313, Valenciennes, France

    Daniel Coutellier

  3. SIMTECH, 2 rue Albert Samain3, F-75017, Paris, France

    Edmondo Di Pasquale

Authors
  1. Edmondo Di Pasquale
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  2. Daniel Coutellier
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Correspondence to Edmondo Di Pasquale.

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Di Pasquale, E., Coutellier, D. Wave propagation in head on bonnet impact: Material and design issues. Int.J Automot. Technol. 18, 631–642 (2017). https://doi.org/10.1007/s12239-017-0063-z

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  • DOI: https://doi.org/10.1007/s12239-017-0063-z

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