Unilateral anti-delamination sandwich plate with oblique rib plate and application, connection and preparation method thereof

Abstract

The invention discloses an unilateral anti-delamination sandwich plate with an oblique rib plate, which comprises an upper panel, a lower panel and a core material filled between the upper and lower panels. The inner side of the upper panel is uniformly provided with a plurality of upper ribs arranged obliquely, and the inner side of the lower panel is uniformly provided with a plurality of lowerribs arranged obliquely. the oblique included angle between the lower rib plate and the lower panel is 15 to 45 degrees, the friction coefficient between the core material and the upper rib plate is [mu] ', and the oblique included angle between the upper rib plate and the upper panel is smaller than tan<-1> [mu] '. The invention overcomes the delamination phenomenon of the sandwich plate by changing the structure form of the traditional sandwich plate and obviously improves the anti-penetration performance of the sandwich plate, can improve the protective performance of the ship, can reduce the weight of the ship, and improves the comfort and safety of the ship. The invention has convenient processing method and lower cost, and will be widely applied in the fields of ship structure, building structure, armored vehicle, bulletproof structure and the like.

Description

technical field [0001] The invention relates to a sandwich panel suitable for armor protection and ship building, in particular to a single-side anti-delamination sandwich panel with oblique ribs and its application, connection and preparation methods. Background technique [0002] Over the past century, military and civilian engineers have carried out a lot of research on high-speed penetration phenomena. Engineers engaged in armor protection research have tried every means to reduce the damage of the protected structure and resist the penetration of high-speed projectiles. With the continuous development of science, the impact resistance of some traditional materials is far from meeting the required requirements. Therefore, various new composite materials have emerged, and sandwich panels are one of them. The emergence of sandwich panels has enabled engineers to find new methods in the field of anti-penetration research. Due to their light weight, high strength and other e...

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Problems solved by technology

[0005] It can be seen from the above that there are many types and functions of sandwich panels at present. Generally, the impact of the projectile is resisted by the high-speed collision between the high-strength panel and the projectile, or the impact energy of the projectile is absorbed by different energy-absorbing characteristics of the core material, so as to protect the interlayer. There are not many studies on the improvement of the plate structure to increase the penetration resistance of the sandwich plate, and the widely used sandwich plate is facing delamination in ship construction, which seriously affects the service life and safety of the ship.

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