The invention belongs to the field of airplane structural strength tests, and particularly relates to a stringer joint and a stringer joint bottom plate, the stringer joint bottom plate comprises a stringer side and a frame edge side which are different in height, the frame edge side is higher than the stringer side, and the stringer side is parallel to the bottom surface of the frame edge side; the stringer joint vertical rib is vertically connected to the top surface of the stringer joint bottom plate and is vertical to a boundary between the frame edge side and the stringer side; the number of connecting bolts of the stringer and the stringer joint is reduced, and the load transfer capacity of the stringer joint is not reduced while the fatigue weak part of the structure is not changed; 2, gradient design is carried out on the thickness of the stringer joint bottom plate, so that the stress distribution of the bottom plate is more uniform and reasonable; and 3, the end part of the stringer joint stud is obliquely cut, so that the structural weight is reduced.

    本申请属飞机结构强度试验领域,特别涉及一种长桁接头,长桁接头底板,长桁接头底板包括高度不同的长桁侧与框缘侧,所述框缘侧高于所述长桁侧,所述长桁侧与所述框缘侧的底面相互平行;长桁接头立筋,长桁接头立筋垂直连接于长桁接头底板的顶面,并垂直与所述框缘侧与所述长桁侧的分界线;减少长桁与长桁接头连接螺栓数量,在不改变结构疲劳薄弱部位的同时保证长桁接头传载能力不下降;2.对长桁接头底板厚度进行梯度设计,使得底板应力分布更加均匀、合理;3.对长桁接头立筋端部进行斜削,减少结构重量。


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    Title :

    Long stringer joint


    Additional title:

    一种长桁接头


    Contributors:
    JI LUMING (author) / YOU XINMEI (author) / SHI ZHIJUN (author) / LI XIAOPENG (author) / ZHANG YANJUN (author)

    Publication date :

    2022-07-01


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge




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