The invention relates to a sound absorption and insulation material structure based on a mechanical metamaterial, which comprises a sound insulation material and a sound absorption material arranged on one side of the sound insulation material, the sound absorption and insulation material structure further comprises a film acoustic metamaterial, and the film acoustic metamaterial comprises a film and a mass block connected to one side of the film. The thin film acoustic metamaterial is connected with the sound absorption material, a mounting groove matched with the mass block is formed in the sound absorption material, the mass block is located in the mounting groove in the sound absorption material, and the thin film acoustic metamaterial is not in contact with the sound insulation material. Compared with the prior art, the whole vehicle PBNR under different paths can be remarkably improved, and compared with an original traditional acoustic package, the medium-high frequency sound insulation effect of the whole vehicle can be further improved on the premise that the weight is not increased.

    本发明涉及一种基于机械超材料的吸隔声材料结构,包括隔声材料和设置在隔声材料一侧的吸声材料,所述吸隔声材料结构还包括薄膜声学超材料,该薄膜声学超材料包括膜和连接在膜一侧的质量块,所述薄膜声学超材料连接所述吸声材料,所述吸声材料内设有与质量块相配合的安装槽,所述质量块位于吸声材料内的安装槽内,所述薄膜声学超材料与隔声材料不接触。与现有技术相比,本发明能够显著提升不同路径下的整车PBNR,相比原传统声学包,本发明能够实现在不增加重量的前提下进一步提升了整车的中高频隔声效果。


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    Title :

    Sound absorption and insulation material structure based on mechanical metamaterial


    Additional title:

    一种基于机械超材料的吸隔声材料结构


    Contributors:
    WU XIAN (author) / LI QINGRAN (author) / QIN SHENGJIE (author) / SHAO JIANWANG (author)

    Publication date :

    2024-06-11


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES



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