Bidirectional cross corrugated interlayer structure

Abstract

The invention discloses a bidirectional cross corrugated interlayer structure, which comprises an upper panel, a lower panel and a core body; each of the positive and negative surfaces of the core body is provided with pits which are arranged according to a row rule; the center line of the pits in the row at the edge cuts out the cross section of the thickness of the core body, the whole body of the core body after being cut out is in a rectangular shape, the adjacent sides of the core body are of two continuous corrugated structures in a totally identical direction, and ripples on the two sides are at a wave crest or a wave trough while being located at the joint position; and the upper panel and the lower panel are fixed to the upper surface and the lower surface of the core body respectively. The bidirectional cross corrugated interlayer structure disclosed by the invention can remarkably improve the mechanical properties, such as the transverse property and the shearing resistanceproperty, of the sandwich structure.

Description

technical field [0001] The invention relates to a two-way intersecting corrugated sandwich structure, which can be used as a structural part in the fields of aerospace, vehicles and ships, and can also be used as a panel in the field of construction. Background technique [0002] Multifunctional composite structures have a series of advantages such as high specific strength, specific modulus, and designability, and have received more and more attention and applications, involving national defense, military, vehicles, ships, submarines, buildings, bridges, etc. . As a new type of composite structure, the corrugated sandwich structure is composed of two upper and lower panels and a corrugated sandwich layer in the middle. The material used for the core is geometrically in the form of a corrugated structure. The panels and core layers of the corrugated sandwich structure can be connected together by adhesives or welding, and can also be formed by other processes. The corrugat...

AI Technical Summary

Problems solved by technology

The traditional corrugated sandwich structure generally has a core in the form of unidirectional corrugations, and its in-plane mechanical properties have certain directionality, and the mechanical properties in one direction are weak, which leads to limitations in the application of this structure, and it is difficult to adapt to higher requirements for mechanical properties. engineering application requirements

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