A new configuration of honeycomb sandwich panel

Abstract

The invention discloses a novel configuration honeycomb sandwich panel composed of an aluminum alloy panel, a honeycomb core layer, a composite material panel and a sandwich panel body. The honeycombsandwich panel body is formed by pressing and sequentially includes the aluminum alloy panel, the honeycomb core layer and the composite material panel. The surface of the aluminum alloy panel is connected with the top of the honeycomb core layer, the inner surface of the composite material panel is connected with the bottom of the honeycomb core layer, a plurality of honeycomb unit cells are equidistantly and parallelly arranged and glued on a large rib plate, line contact parts between the honeycomb unit cells are welded to form a honeycomb chain, the honeycomb chain is laminated and glued to two adjacent honeycomb chain layers, and the side edges of the honeycomb unit cells are symmetrically connected with a small rib plate with respect to a center cylinder. The sandwich panel improvesthe specific stiffness and specific strength of the honeycomb sandwich panel bearing an out-of-plane load by using the characteristics of cylindrical axial compression stabilization and plastic energyabsorption, so that the panel is stressed more evenly; mechanical properties of a honeycomb core and the capability of bearing the out-of-plane load are enhanced, and the compression, bending and impact resistance of the honeycomb sandwich panel is improved.

Description

technical field [0001] The invention relates to the technical field of composite material structure design and manufacture, in particular to a honeycomb sandwich panel with a new configuration, which is suitable for aircraft wing flaps, empennages, and packaging box core composite materials and structural design and manufacture. Background technique [0002] Honeycomb sandwich panel has the characteristics of light weight, high specific stiffness, high specific strength, good stability, heat insulation and sound insulation, and is widely used in aerospace, automobile, ship, packaging and transportation and other fields. It is common to use regular hexagonal honeycomb as the core material of sandwich panels. Honeycomb core is a major achievement of human bionic applications. Regular hexagonal honeycomb is a masterpiece of nature. Many scholars in history have studied this and pointed out that natural honeycomb is equally The volume under the mass is the largest, and the stiff...

AI Technical Summary

Problems solved by technology

Although the common honeycomb sandwich panels have excellent performance in out-of-plane bearing, their bearing capacity is limited. Under the action of large out-of-plane pressure or impact load, the core is prone to plastic buckling, and the sandwich panel quickly enters the platform stress period, which makes the structure The carrying capacity of the

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