Double-side anti-delamination sandwich panel with oblique ribs and its application, connection and preparation method

Abstract

The invention discloses a double-side anti-layering sandwich plate with an oblique rib plates, comprising 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 rib plates arranged obliquely, and the inner side of the lower panel is uniformly provided with a plurality of lower rib plates arranged obliquely; the friction coefficient between the core material and the upper rib plates is mu, and the oblique included angle between the upper rib plates and the upper panel is smaller than tan-1mu, and the friction coefficient between the core material and the lower rib plates is mu'; and the oblique included angle between the lower rib plates and the lower panel is smaller thantan-1mu'. The double-side anti-layering sandwich plate with an oblique rib plates overcomes the layering 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, thus not only increasing the protective performance of the ship, but also reducing the weight, and improving the comfort and safety. The double-side anti-layering sandwich plate with an oblique rib plates has a convenient processing method and a lower cost, and is applied to the fields of ship structure, building structure, armored vehicle 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 double-side anti-delamination sandwich panel with oblique ribs and a preparation method thereof. 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 excellent properties, sa...

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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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