The invention belongs to the field of aviation structural mechanics, and relates to a method for increasing the compression bearing capacity of a composite stiffened wallboard, which comprises the following steps: selecting a sewing thread with proper fineness, and sewing the skin and the bottom edge of a stringer according to a certain sewing density after the skin and the stringer are preformed and before the skin and the stringer are cured, so as to obtain the composite stiffened wallboard. After sewing is completed, a prefabricated body composed of the skin and the stringer is cured; the skin and the stringer are fixed through the sewing threads, the skin and the stringer are integrally fixed, the skin and the stringer are stressed together when the skin and the stringer are stressed in any direction, glue does not exist between the skin and the stringer, complete attachment between the skin and the stringer is achieved, the anti-stripping capacity is high, the out-of-plane stripping strength of the skin and the stringer is improved, and the service life of the skin and the stringer is prolonged. The post-buckling bearing capacity of the composite material stiffened wall plate is fully exerted, the compression bearing capacity of the composite material stiffened wall plate structure is indirectly improved, the design weight is reduced, and the economical efficiency of an airplane is improved.
本申请属于航空结构力学领域,为一种增加复合材料加筋壁板压缩承载能力的方法,包括:选用适合细度的缝纫线,在蒙皮与长桁预成型后、固化前,按照一定的缝合密度,将蒙皮与长桁底缘进行缝合,缝合完成后再将蒙皮与长桁组成的预制体固化;通过采用缝纫线固定蒙皮与长桁,蒙皮与长桁实现一体固定,在受到任意方向的力时,蒙皮与长桁均共同受力,蒙皮与长桁之间不存在胶而实现蒙皮与长桁之间的完全贴合,抗剥离能力强,进而提升蒙皮与长桁的面外剥离强度,充分发挥复合材料加筋壁板的后屈曲承能力,间接提高复合材料加筋壁板结构的压缩承载能力,降低设计重量,提升飞机的经济性。
Method for enhancing compression bearing capacity of composite stiffened wallboard
一种增强复合材料加筋壁板压缩承载能力的方法
2022-12-23
Patent
Elektronische Ressource
Chinesisch
Composite U-shaped unit stiffened wallboard and integral forming method thereof
Europäisches Patentamt | 2024
|Testing device for composite material L-shaped stiffened wallboard typical structure
Europäisches Patentamt | 2024
|Stiffened wallboard static fatigue load applying test device
Europäisches Patentamt | 2021
|Foam sandwich cap type stiffened wallboard structure and integrated forming method
Europäisches Patentamt | 2021
|