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Contribution à la compréhension et à la modélisation des effets lésionnels sur le thorax des ondes de choc aériennes

Abstract : With the increasing number of bombing attacks and armed conflicts, the risk of thoracic injuries caused by the blast threat is worsen, without knowing the efficiency of the current individual chest protection systems impacted by such a threat. This research, combining experiments and numerical simulations, dealt with the physics at play from the detonation of an explosive charge and the injury outcomes. One of the first objectives was to understand the different physical phenomena involved in the propagation of the shock wave in the open field. The huge set of data acquired allowed the development of simple tools for the determination of the blast characteristics as well as a robust numerical approach under LS-DYNA. The next objective was to study the interaction of shock waves with targets of simple geometries and different compositions. In addition to the numerical validation of the fluid-structure interaction and of the FEM of the structures, the analysis of the experimental data acquired allowed to determine possible candidates for the definition of a thoracic injury criterion. Finally, tests on biological post-mortem reactors have been carried out, which enabled to obtain the kinematic response of the swine’s thorax under blast. All this work has led to improvements and promising tools for the evaluation and the improvement of chest protection systems in the near future. The proposed tools should be used to limit the risks to this threat which has gained in importance in recent years.
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  • HAL Id : tel-02918121, version 1

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Johanna Boutillier. Contribution à la compréhension et à la modélisation des effets lésionnels sur le thorax des ondes de choc aériennes. Biomécanique [physics.med-ph]. Université de Strasbourg, 2017. Français. ⟨NNT : 2017STRAD003⟩. ⟨tel-02918121⟩

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