Study on High-Speed Impact Phenomena and Nonli Varation Phenomena of Aluminum Honeycomb Structures

所谓的细胞结构是由一个由滑动杆或实心板组合而成的网络组成的，以固定多孔的援助。铝蜂窝是一种典型的由六边形蜂窝壁组成的蜂窝结构，其标称重量非常小，广泛用于壳结构的加固。本课题对铝蜂窝的面内静动力特性进行了实验和分析研究。通过引入细胞-雄性应变和宏观应变，深入研究了应变率对平面内压缩过程和塑性破坏的影响。实验采用了一种新型冲击装置，采用激光测速仪、高速摄像机和应变片对压缩过程进行了测量。另一方面，考虑到相对较小的外损伤面内变形较大的事实，为了将铝蜂窝应用于温和的人机阻尼器，研究了她和吸收特性。还有振动。研究了铝蜂窝结构的动力特性与减震性能的关系。结果发现了蜂窝结构面内压缩过程的有趣行为，为蜂窝结构的发展提供了有益的知识

So called cell structure is composed of a network of combined slid stems or solid plates to firm a porous Aid. An aluminum honeycomb, a typical cell structure composed of hexagonal cells walls, has very small nominal weight and is widely used for reinforcement of shell structures. In this project, the in-plane static and dynamic behaviors of aluminum honeycombs were investigated both experimentally and analytically. Particularly the effect of strain rates on the in-plane compression process and plastic collapse was investigated intensively by introducing a cell-male strain and a macro-sale strain. In experiments, a newly constructed impacting device was used and the compression process was measured using a laser velocimeter a high-speed video camera and strain gauges.On the other hand, by considering the fact that in-plane deformation is large for relatively small external bads, the she& absorption characteristics was examined in order to apply aluminum honeycombs for a at and gentle man-machine damper. Also, the vibration. characteristics was investigated in the relation to the dynamic behavior and shock absorption of aluminum honeycombs.As a result, very interesting behaviors of the in-plane compression process ware found and useful knowledge for development of honeycomb structures was obtained