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首页> 外文期刊>Journal of biomechanical engineering. >An Experimental and Numerical Study of Hybrid III Dummy Response to Simulated Underbody Blast Impacts
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An Experimental and Numerical Study of Hybrid III Dummy Response to Simulated Underbody Blast Impacts

机译：杂交III虚拟反应对模拟底层爆炸冲击的实验和数值研究

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摘要

Anthropometric test devices (ATDs) such as the Hybrid III dummy have been widely used in automotive crash tests to evaluate the risks of injury at different body regions. In recent years, researchers have started using automotive ATDs to study the high-speed vertical loading response caused by underbody blast impacts. This study analyzed the Hybrid III dummy responses to short-duration, large magnitude vertical accelerations in a laboratory setup. Two unique test conditions were investigated using a horizontal sled system to simulate underbody blast loading conditions. The biomechanical responses in terms of pelvis acceleration, chest acceleration, lumbar spine force, head accelerations, and neck forces were measured. Subsequently, a series of finite element (FE) analyses were performed to simulate the physical tests. The correlation between the Hybrid III test and numerical model was evaluated using the CORRELATION AND ANALYSIS (CORA) version 3.6.1. The score for the Wayne State University (WSU) FE model was 0.878 and 0.790 for loading conditions 1 and 2, respectively, in which 1.0 indicated a perfect correlation between the experiment and the simulated response. With repetitive vertical impacts, the Hybrid III dummy pelvis showed a significant increase in peak acceleration accompanied by a rupture of the pelvis foam and flesh. The revised WSU Hybrid III model indicated high stress concentrations at the same location, providing a possible explanation for the material failure in actual Hybrid III tests.
机译：诸如杂交III假人的人类测量测试装置（ATDS）已广泛用于汽车碰撞试验，以评估不同体积损伤的风险。近年来，研究人员已经开始使用汽车ATDS来研究由另一个爆炸冲击造成的高速垂直装载响应。该研究分析了在实验室设置中对短持续时间，大幅度垂直加速度的杂交III虚拟响应。使用水平滑雪系统研究了两个独特的测试条件，以模拟底部的爆破负载条件。测量了骨盆加速，胸部加速，腰椎力，头部加速度和颈部力方面的生物力学响应。随后，进行一系列有限元（FE）分析以模拟物理测试。使用相关性和分析（Cora）3.6.1版评估混合III测试和数值模型之间的相关性。韦恩州立大学（WSU）Fe模型的得分分别为0.878和0.790，分别为1和2，其中1.0表示实验与模拟响应之间的完美相关性。随着重复的垂直撞击，杂交III虚拟骨盆显示出伴有骨盆泡沫和肉体破裂的峰加速度显着增加。修订的WSU混合III模型在相同位置表示高应力浓度，为实际杂交III测试中的材料失效提供了可能的解释。

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    Somasundaram Karthik; Kalra Anil; Sherman Don; Begeman Paul; Yang King H.; Cavanaugh John;

  • 作者单位

    Wayne State Univ Dept Biomed Engn 818 W Hancock Ave Detroit MI 48201 USA;

    Wayne State Univ Dept Biomed Engn 818 W Hancock Ave Detroit MI 48201 USA;

    Wayne State Univ Dept Biomed Engn 818 W Hancock Ave Detroit MI 48201 USA;

    Wayne State Univ Dept Biomed Engn 818 W Hancock Ave Detroit MI 48201 USA;

    Wayne State Univ Dept Biomed Engn 818 W Hancock Ave Detroit MI 48201 USA;

    Wayne State Univ Dept Biomed Engn 818 W Hancock Ave Detroit MI 48201 USA;

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  • 正文语种 eng
  • 中图分类 生物医学工程;
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