The invention discloses an electromagnetic stealth-underwater sound absorption-super-hydrophobic drag reduction metamaterial which comprises an inclined honeycomb five-mode material, a rotary stacking pyramid wave absorber array and an anisotropic cross-scale micro-nano super-hydrophobic surface. The inclined honeycomb pentamode material comprises inclined honeycomb cell elements; the rotary stacking pyramid wave absorber array comprises a plurality of rotary stacking pyramid wave absorber units which are uniformly arranged; the anisotropic cross-scale micro-nano super-hydrophobic surface comprises a plurality of flow direction grooves and flow direction ribs. The invention also discloses a preparation method of the material. The preparation method comprises the following steps: bonding the rotary stacked pyramid wave absorber array on the inclined honeycomb five-mode material; a wave-transparent resin material is filled between the rotary stacked pyramid wave absorber units; and a flow direction groove and a flow direction convex edge are formed by adopting a 3D printing method. According to the metamaterial structure, the functions of hiding in the air, reducing noise underwater, reducing resistance underwater and the like can be achieved, miniaturization and light weight of the metamaterial structure are achieved, and the metamaterial structure has wide application prospects in the field of structural design of cross-medium aircrafts.

    本发明公开了一种电磁隐身‑水声吸声‑超疏水减阻超材料,包括斜蜂窝五模材料、旋转堆叠金字塔吸波器阵列和各向异性跨尺度微纳超疏水表面;斜蜂窝五模材料中包含斜蜂窝胞元;旋转堆叠金字塔吸波器阵列中包含若干个均匀排布的旋转堆叠金字塔吸波器单元;各向异性跨尺度微纳超疏水表面包含若干个流向凹槽和流向凸棱。本发明还公开了上述材料的制备方法,包括:在斜蜂窝五模材料上粘接旋转堆叠金字塔吸波器阵列;在旋转堆叠金字塔吸波器单元之间填充透波性树脂材料;采用3D打印方法形成流向凹槽和流向凸棱。本发明能够实现空中隐身、水下降噪、水下减阻等功能,实现超材料结构的小型化和轻量化,在跨介质飞行器结构设计领域具有广阔的应用前景。


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    Title :

    Electromagnetic stealth-underwater sound absorption-super-hydrophobic drag reduction metamaterial and preparation method thereof


    Additional title:

    一种电磁隐身-水声吸声-超疏水减阻超材料及制备方法


    Contributors:
    LI YUANYUAN (author) / CHI BAIHONG (author) / BI DIANFANG (author) / WANG PENGFEI (author) / LI BINGYANG (author) / CHENG XIANG (author) / LI ZHEN (author) / FENG XIANGCHAO (author) / GENG XINYU (author) / WANG XIN (author)

    Publication date :

    2024-04-05


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM , Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse / B22F Verarbeiten von Metallpulver , WORKING METALLIC POWDER / B29C Formen oder Verbinden von Kunststoffen , SHAPING OR JOINING OF PLASTICS / B33Y ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING , Additive (generative) Fertigung, d. h. die Herstellung von dreidimensionalen [3D] Bauteilen durch additive Abscheidung, additive Agglomeration oder additive Schichtung, z. B. durch 3D- Drucken, Stereolithografie oder selektives Lasersintern / B60F VEHICLES FOR USE BOTH ON RAIL AND ON ROAD , Fahrzeuge für den Verkehr sowohl auf Schienen als auch auf Straßen / G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES



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