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首页> 外文会议>AHS International Annual Forum vol.2; 20070501-03; Virginia Beach,VA(US) >Deployable System for Crash-Load Attenuation
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Deployable System for Crash-Load Attenuation

机译：可部署系统，以减轻碰撞负荷

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摘要

An externally deployable honeycomb structure is investigated with respect to crash energy management for light aircraft. The new concept utilizes an expandable honeycomb-like structure to absorb impact energy by crushing. Distinguished by flexible hinges between cell wall junctions that enable effortless deployment, the new energy absorber offers most of the desirable features of an external airbag system without the limitations of poor shear stability, system complexity, and timing sensitivity. Like conventional honeycomb, once expanded, the energy absorber is transformed into a crush efficient and stable cellular structure. Other advantages, afforded by the flexible hinge feature, include a variety of deployment options such as linear, radial, and/or hybrid deployment methods. Radial deployment is utilized when omnidirectional cushioning is required. Linear deployment offers better efficiency, which is preferred when the impact orientation is known in advance. Several energy absorbers utilizing different deployment modes could also be combined to optimize overall performance and/or improve system reliability as outlined in the paper. Results from a series of component and full scale demonstration tests are presented as well as typical deployment techniques and mechanisms. LS-DYNA analytical simulations of selected tests are also presented.
机译：针对轻型飞机的碰撞能量管理，研究了一种可外部部署的蜂窝结构。新概念利用可膨胀的蜂窝状结构通过粉碎吸收冲击能量。这种新型的能量吸收器以可轻松展开的细胞壁接合处之间的柔性铰链为特色，提供了外部安全气囊系统所需的大多数功能，而不受剪切稳定性，系统复杂性和定时灵敏度差的限制。像传统的蜂窝一样，能量吸收器一旦膨胀，便会转变为压碎高效，稳定的蜂窝状结构。柔性铰链特征所提供的其他优点包括多种部署选项，例如线性，径向和/或混合部署方法。当需要全方位缓冲时，可采用径向展开。线性展开可提供更好的效率，这在预先确定冲击方向时是首选。如本文所述，也可以将利用不同部署模式的几种能量吸收器进行组合，以优化整体性能和/或提高系统可靠性。展示了一系列组件和全面演示测试的结果以及典型的部署技术和机制。还介绍了所选测试的LS-DYNA分析模拟。

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