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Investigation of vibration transmissibility for paper honeycomb sandwich structures with various moisture contents

机译：纸张蜂窝夹层结构具有各种水分含量的振动传递性研究

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摘要

Vibration transmissibility is an important factor to characterize the vibration absorption performance of cushioning packaging materials during transportation. Reasonable prediction of vibration transmissibility can guide antivibration design and reduce packaging cost. As a kind of green cushioning material, paper honeycomb sandwich structure is widely used in transport packaging because of its good machinability. But at the same time, it also has strong water absorption capacity. To a great extent, the vibration transmissibility of paper honeycomb sandwich structure may be affected by ambient humidity. In this research, the vibration transmissibility of paper honeycomb sandwich structures with various structure sizes under different humidity was tested by sine frequency sweep experiments. The rule of maximal vibration transmissibility with moisture content, cell length of honeycomb, and thickness of sandwich structure was analyzed. The results show that the maximal vibration transmissibility of paper honeycomb sandwich structure increases with the increase of moisture content, cell length of honeycomb, and thickness of sandwich structure. In order to construct the relationship between maximal vibration transmissibility and various factors, the moisture content was standardized. Finally, the maximal vibration transmissibility evaluation equation of paper honeycomb sandwich structure containing standardized moisture content and size of sandwich structure was obtained, which is of some reference value for vibration prediction of paper honeycomb sandwich structures.
机译：振动传动率是表征在运输过程中缓冲包装材料的振动吸收性能的重要因素。合理预测振动传动性可以引导防振设计并降低包装成本。作为一种绿色缓冲材料，由于其良好的可加工性，纸张蜂窝夹层结构广泛用于运输包装。但与此同时，它也具有强大的吸水能力。在很大程度上，纸张蜂窝夹层结构的振动传动率可能受到环境湿度的影响。在本研究中，通过正弦频率扫描实验测试了在不同湿度下具有各种结构尺寸的纸张蜂窝夹层结构的振动传动性。分析了具有水分含量的最大振动传导性的规则，蜂窝状细胞长度和夹层结构的厚度。结果表明，纸张蜂窝夹层结构的最大振动传动率随着水分含量，蜂窝细胞长度的增加而增加，以及夹层结构的厚度。为了构建最大振动传递率和各种因素之间的关系，标准化水分含量。最后，获得了含有标准化水分含量和夹层结构尺寸的纸张蜂窝夹层结构的最大振动传感器评估方程，这是纸张蜂窝夹层结构的振动预测的一些参考值。

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