本发明公开了轨道交通车辆安全防护领域的一种泡沫金属填充仿竹夹芯圆管及其制备方法,所述泡沫金属填充仿竹夹芯圆管呈竹筒状,包括嵌套的内管和外管,内管和外管之间填充有泡沫金属,外管侧壁上以外管中部为中心对称设有仿生节。本方案的圆管设计为竹筒状,利用仿生节的局部加强作用提高结构承载能力和稳定性,确保在车辆碰撞时有效地分散荷载、进一步达到缓冲的目的;且内外管嵌套并填充泡沫金属的方式,实现圆管轻量化的同时,利用泡沫铝的填充效应改善内外圆管的变形模式、增强能量吸收能力,确保仿竹圆管在车辆碰撞时拥有较高的比吸能和能量吸收效率,提升轨道车辆的被动安全防护性能。

    The invention discloses a foam metal filled bamboo-like sandwich round tube and a preparation method thereof in the field of rail transit vehicle safety protection, the foam metal filled bamboo-like sandwich round tube is in a bamboo tube shape and comprises an inner tube and an outer tube which are nested, foam metal is filled between the inner tube and the outer tube, and the foam metal is filled between the inner tube and the outer tube. Bionic joints are symmetrically arranged on the side wall of the outer pipe with the middle of the outer pipe as the center. According to the scheme, the circular tube is designed to be in a bamboo tube shape, the bearing capacity and stability of the structure are improved through the local reinforcing effect of the bionic joints, it is ensured that loads are effectively dispersed during vehicle collision, and the buffering purpose is further achieved; the mode that the inner pipe and the outer pipe are nested and filled with the foam metal is adopted, the light weight of the circular pipe is achieved, meanwhile, the deformation mode of the inner circular pipe and the outer circular pipe is improved through the filling effect of the foam aluminum, the energy absorption capacity is enhanced, it is ensured that the bamboo-imitated circular pipe has high specific energy absorption and energy absorption efficiency during vehicle collision, and the passive safety protection performance of a railway vehicle is improved.


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    Title :

    一种泡沫金属填充仿竹夹芯圆管及其制备方法


    Publication date :

    2024-03-08


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B61F Untergestelle für Schienenfahrzeuge, z.B. Fahrgestellrahmen, Drehgestelle oder Anordnungen der Radsätze , RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES / B22C FOUNDRY MOULDING , Gießformen / B22F Verarbeiten von Metallpulver , WORKING METALLIC POWDER / C22C Legierungen , ALLOYS