Compressive Response of Honeycombs Under In-Plane Uniaxial Static and Dynamic Loading, Part 1: Experiments
Compressive Response of Honeycombs Under In-Plane Uniaxial Static and Dynamic Loading, Part 1: Experiments
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DOI：
10.2514/2.1734
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发表时间：
2002
期刊：
影响因子：
2.5
通讯作者：
Jaeung Chung;A. Waas
中科院分区：
文献类型：
--
作者：
Jaeung Chung;A. Waas
通过静态和动态试验相结合的方法，研究了聚碳酸酯圆孔蜂窝在面内单轴载荷作用下的破碎响应。圆形单元蜂窝材料具有近周期性的微结构。静态实验对应于在两个不同的主面内方向上的位移控制下的单轴加载条件。利用低速冲击跌落试验装置进行了相应的动态试验。在动态试验中使用了三种不同的初始条件（对应于不同的跌落高度）。在响应的初始部分，试样以几乎均匀的方式变形。接下来，观察到一个非线性阶段，其特征在于渐进局部化的变形。渐进定位导致每个细胞的壁接触。对观察到的蜂窝正交各向异性响应的原因进行了讨论。静态和动态实验之间的崩溃机制的比较。首先介绍了实验工作（第1部分），其次是模拟研究（第2部分）。
The crushing response of polycarbonate circular cell honeycombs under in-plane uniaxial loading is studied through a combination of static and dynamic experiments. The circular cell honeycomb material has a nearly periodic microstructure. The static experiments correspond to a uniaxial loading condition under displacement control in two different principal in-plane directions. The corresponding dynamic experiments are carried out using a low-velocity impact drop test facility. Three different initial conditions (corresponding to different drop heights) are used in the dynamic tests. In the initial part of the response, the specimens deform in an almost uniform fashion. Next, a nonlinear phase characterized by progressive localization of deformation is observed. The progressive localization causes the walls of each cell to contact. The reasons for the observed orthotropic response of the honeycombs are discussed. A comparison of the collapse mechanisms between static and dynamic experiments is included. The experimental work is presented first (Part 1), followed by the simulation studies (Part 2).