U.S.-United Kingdom Cooperative Research: Energy Absorbing Structures Containing Tubular Elements

该奖项将支持开展合作研究 由范德比尔特大学的约翰·卡尼博士，威廉·斯特朗奇博士， 剑桥大学的研究员，以及S. R.里德大学 曼彻斯特科学技术研究所（UMIST）。 的 拟议的研究计划将涉及一个实验性的， 准静态和冲击能量的分析研究 结构体系的耗散特性 金属管作为能量耗散元件。 拟议研究的目标包括四个具体的 任务在任务1中， 非加强和加强的管状组件组将被 相对于它们的管间边界优化 条件，它们的半径与壁厚比，以及它们的 应变硬化和应变速率 特性. 的行为 轴向和侧向下的复合（泡沫填充）金属管 将研究载荷条件和大变形 在任务2中。 任务3涉及的是 一维冲击理论模拟的冲击响应 二维管状阵列。 最后，任务4将涉及 开发一个专家系统，将优化 高速公路安全用冲击衰减装置的设计 运营 范德比尔特大学的冲击力学实验室 剑桥大学和UMIST有着独特的实验 设施，共享将大大提高 研究人员的生产力。 本次联合的成果 项目应有助于基础研究工作， 冲击力学的重要领域。

This award will support collaborative research to be carried out by Dr. John Carney, Vanderbilt University, Dr. William Stronge, University of Cambridge, and Dr. S. R. Reid University of Manchester, Institute of Science and Technology (UMIST). The proposed research program will involve an experimental and analytical investigation of the quasi-static and impact energy dissipation characteristics of structural systems containing metallic tubes as energy dissipating elements. The objectives of the proposed research include four specific tasks. In Task 1, the energy dissipation characteristics of clusters of unstiffened and stiffened tubular assemblies will be optimized with respect to their intertubular boundary conditions, their radius to wall thickness ratios, and their strain-hardening and strain-rate properties. The behavior of composite (foam filled) metallic tubes under axial and lateral loading conditions and large deformations will be investigated in Task 2. Task 3 is concerned with the generalization of one-dimensional shock theory to model the impact response of two-dimensional tubular arrays. Finally, Task 4 will involve the development of an expert system which will optimize the design of impact attenuation devices employed in highway safety operations. The impact mechanics laboratory at Vanderbilt University, the University of Cambridge and UMIST have unique experimental facilities, the sharing of which will greatly enhance the productivity of the researchers involved. Results of this joint project should contribute to basic research efforts in the important area of impact mechanics.