The DYCAST (Dynamic Crash Analysis of Structures) experiments that started at NASA Langley Research Center during the late 1970s have greatly influenced the methodology and thinking of aircraft crashworthiness and survivability studies, and was continued and refined at other aerospace establishments. Nevertheless, so far most of the existing work has emphasized the impact damage to the aircraft section. Issues related to potential passenger injuries have not been properly addressed in the literature, to the best of our knowledge. Here, we study the DYCAST problem integrally by treating and combining impact damage and passenger injuries altogether. We develop the biomechanics by way of modal analysis of passenger dummy motions coupled with the vibration of aircraft structures in order to understand their basic interactions. Two types of mechanical dummies are used in this study. Such a modal analysis can help identify basic injury types, but is valid only in the constructed models linear regime. However, we are able to extend the linear elastic model to a nonlinear elastoplastic computational model by using the versatile software LS-DYNA as the platform. Computer simulations are carried out on the supercomputer clusters and the numerical results are rendered into video animations for visualization and analysis. One can see, for example, how the passenger-dummy interactive motions with the fuselage and fixtures and the potential caused injuries in the event of general aircraft crashes on a fractal domain.

1970年代后期在NASA兰利研究中心开始的DYCAST（结构动态碰撞分析）实验极大地影响了飞机耐撞性和生存性研究的方法和思想，并在其他航空航天机构中得到了继续和完善。尽管如此，到目前为止，大多数现有工作都强调了对飞机部分的撞击损坏。据我们所知，有关潜在乘客受伤的问题尚未在文献中得到适当解决。在这里，我们通过对冲击损伤和乘客伤害进行综合处理，从而对DYCAST问题进行了整体研究。我们通过模态分析乘客虚假运动并结合飞机结构的振动来开发生物力学，以了解它们的基本相互作用。在这项研究中使用了两种类型的机械假人。这种模态分析可以帮助识别基本伤害类型，但仅在构建的模型线性方案中有效。但是，通过使用通用软件LS-DYNA作为平台，我们能够将线性弹性模型扩展为非线性弹塑性计算模型。在超级计算机集群上进行计算机模拟，并将数值结果渲染到视频动画中以进行可视化和分析。例如，人们可以看到假人与机身和固定装置的互动运动以及在通用飞机在分形区域坠毁的情况下可能造成的伤害。通过使用通用软件LS-DYNA作为平台，我们能够将线性弹性模型扩展为非线性弹塑性计算模型。在超级计算机集群上进行计算机模拟，并将数值结果渲染到视频动画中以进行可视化和分析。例如，人们可以看到假人与机身和固定装置的互动运动以及在通用飞机在分形区域坠毁的情况下可能造成的伤害。通过使用通用软件LS-DYNA作为平台，我们能够将线性弹性模型扩展为非线性弹塑性计算模型。在超级计算机集群上进行计算机模拟，并将数值结果渲染到视频动画中以进行可视化和分析。例如，人们可以看到假人与机身和固定装置的互动运动以及在通用飞机在分形区域坠毁的情况下可能造成的伤害。