连续型和非连续型蜂窝芯材的共振吸声结构性能研究
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1.中国航空制造技术研究院复合材料技术中心,北京 101300;2.中国飞机强度研究所,西安 710065

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TB132

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国家重点研发计划(2021YFB3703900)


Research on the Performances of Resonant Sound-absorbing Structure Based on Continuous and Discontinuous Honeycomb Core Materials
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1.Composite Center, AVIC Manufacturing Technology Institute, Beijing 101300;2.Aircraft Strength Research Institute of China,Xi'an 710065

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    摘要:

    以芳纶纸蜂窝、内嵌树脂隔板和微穿孔面板为原料,制备了连续和非连续双自由度共振吸声结构,对两种共振吸声结构的力学性能和吸声系数进行对比研究。结果表明:连续蜂窝芯材所制备共振吸声结构的压缩和拉伸性能高于非连续型共振吸声结构,其中非稳定型压缩强度和拉伸强度高19%,稳定型压缩强度高32%,稳定型压缩模量高43%,剪切性能基本相当;两层蜂窝芯材容易出现孔格错位(非连续型共振吸声结构),引起错位区域的微孔堵塞,使该结构的共振吸收峰与理论值出现较大差异。

    Abstract:

    Continuous and discontinuous dual degree of freedom resonance sound absorption structures were prepared by using aramid paper honeycombs, embedded resin partitions and micro-perforated panels. The mechanical properties and sound absorption coefficients of the two resonance sound absorption structures were compared. The results show that: the compression and tensile performances of the resonance absorption structure of the continuous honeycomb core material are higher that of discontinuous honeycomb core material. Among them, the unstabilized compressive strength and tensile strength are 19% higher, the stable compressive strength is 32% higher, the stable compressive modulus is 43% higher, and the shear performance of the structure is basically equal. At the same time, the two-layer honeycomb core material is prone to cell dislocation (discontinuous resonance sound absorption structure), which causes the micropores blocking in the dislocation area, and the peak of the resonance absorption structure is greatly different from the theoretical value.

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刘杰,纪双英,焦丽娟,杨进军.连续型和非连续型蜂窝芯材的共振吸声结构性能研究[J].宇航材料工艺,2023,53(1):75-79.

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  • 收稿日期:2021-12-08
  • 最后修改日期:2023-02-17
  • 录用日期:2022-04-06
  • 在线发布日期: 2023-03-29
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