The invention provides a vehicle body aluminum alloy profile noise reduction structure, a noise reduction design method and a vehicle body. The vehicle body aluminum alloy profile noise reduction structure comprises a first skin, a second skin, a plurality of inclined ribs and a cavity, the first skin and the second skin are oppositely arranged at intervals, the inclined ribs are connected betweenthe first skin and the second skin, the cavity is defined by the first skin, the second skin and the inclined ribs, and a sound absorption structure is arranged in the cavity in a penetrating mode. The sound absorption structure comprises an elastic sound absorption body made of an elastic sound absorption material and a packaging film wrapping the elastic sound absorption body, and the packagingfilm and the elastic sound absorption body are compressed to form a compression piece through vacuumizing. The defect that in the prior art, the sound insulation performance of a vehicle body is insufficient is overcome, light weight is achieved, and noise in the vehicle is effectively reduced.

    本发明提供一种车体铝合金型材降噪结构、降噪设计方法及车体。其中,车体铝合金型材降噪结构包括:间隔相对设置的第一蒙皮和第二蒙皮,连接在所述第一蒙皮和所述第二蒙皮之间的多个斜筋,以及由所述第一蒙皮、所述第二蒙皮和所述斜筋围成的空腔,所述空腔中穿设有吸声结构,所述吸声结构包括由弹性吸声材料制成的弹性吸声体以及包裹在所述弹性吸声体外的包装膜,通过抽真空使得所述包装膜与所述弹性吸声体压缩形成压缩件。本发明解决了现有技术中车体隔声性能不足的缺陷,实现了轻量化的同时,有效降低了车内噪声。


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    Title :

    Vehicle body aluminum alloy profile noise reduction structure, noise reduction design method and vehicle body


    Additional title:

    车体铝合金型材降噪结构、降噪设计方法及车体


    Contributors:
    SUN ZHAOJIN (author) / LIU ZONGCAI (author) / GUO JIANQIANG (author) / PAN GUANGLIANG (author) / SHUAI RENZHONG (author)

    Publication date :

    2021-03-12


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B61D Einzelheiten oder Arten des Wagenaufbaus von Eisenbahnfahrzeugen , BODY DETAILS OR KINDS OF RAILWAY VEHICLES / G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung



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