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Preparation and properties of thermoplastic honeycomb core sandwich structure with aluminum skin

机译：铝皮热塑性蜂窝芯夹芯结构的制备与性能

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The low-velocity impact response of thermoplastic honeycomb core sandwich structure with aluminum skin has been investigated by conducting drop-weight impact tests using an instrumented drop-weight impact tower. At first, the shear modulus of the thermoplastic honeycomb core and flexural modulus of the skin were investigated through a series of flexural test. Later in the study, the indentation test was conducted to the specimen in order to investigate the indentation characteristic. It was found that the indentation characteristic of this sandwich structure can be analyzed using a Meyer indentation law. The impact response of the thermoplastic honeycomb core sandwich structures was predicted using a simple energy-balance model which meant for energy absorption in bending, shear and contact effects. In addition, the energy-balance model was also used to identify the energy partitioning during the impact event. The result shows that the energy absorption profile was relatively constant over the range of impact energies, suggesting that the fraction of energies does not vary with impact conditions.
机译：通过使用仪表式落锤冲击塔进行落锤冲击试验，研究了具有铝皮的热塑性蜂窝芯夹芯结构的低速冲击响应。首先，通过一系列的弯曲试验研究了热塑性蜂窝状芯的剪切模量和皮肤的弯曲模量。在研究的后期，对样品进行压痕测试以研究压痕特性。已经发现，可以使用迈耶压痕定律来分析该夹层结构的压痕特性。使用简单的能量平衡模型预测了热塑性蜂窝状芯夹层结构的冲击响应，该模型旨在吸收弯曲，剪切和接触效应中的能量。此外，能量平衡模型还用于确定冲击事件期间的能量分配。结果表明，能量吸收曲线在冲击能量范围内相对恒定，这表明能量的比例不会随冲击条件而变化。

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