Honeycomb structure easy to bend and capable of adapting to different curved surfaces

Abstract

The invention discloses a honeycomb structure easy to bend and capable of adapting to different curved surfaces, and aims to solve the problems that: when a curved surface honeycomb sandwich structure is prepared in engineering, a planar honeycomb core material is directly bent to be attached to the surface of the curved surface, the honeycomb structure made of part of materials cannot meet the engineering requirement of curved surface attachment due to large in-plane rigidity, a common hexagonal honeycomb structure can generate saddle-shaped deformation in the bending process, and attaching to a curved surface is not facilitated. The honeycomb structure of the invention is formed by arranging a plurality of honeycomb units in a staggered mode, the side wall of each honeycomb unit is an arc curved wall or a broken line wall, and the range of the curvature angle of each arc curved wall is 0-90 degrees. The honeycomb units are polygonal or concave polygonal, comprise concave hexagonal honeycombs, double-arrow honeycombs, star-shaped honeycombs, chiral honeycombs and reverse chiral honeycombs, can be suitable for honeycombs made of different materials, are easy to bend in the production process, and can be bent into a desired curved surface form through design.

Description

technical field [0001] The invention relates to the field of honeycomb structures, in particular to a honeycomb structure that is easy to bend and can adapt to different curved surfaces. Background technique [0002] In engineering, when preparing a curved honeycomb sandwich structure, the planar honeycomb core material is directly bent to attach to the curved surface. On the one hand, the honeycomb structure of some materials is not easy due to the high in-plane stiffness, such as composite material honeycomb, polymer material honeycomb, stainless steel honeycomb, etc., which cannot meet the engineering requirements for surface attachment; on the other hand, the ordinary hexagonal honeycomb structure in During the bending process, a "saddle-like" deformation will occur, which is not conducive to the attachment to the curved surface. Forcibly forming the shape will cause a large internal stress in the honeycomb wall, thereby reducing the structural bearing capacity and surfa...

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Problems solved by technology

[0004] The purpose of the patent of the present invention: the present invention is to solve the engineering problem of directly bending the planar honeycomb core material to attach to the surface of the curved surface when preparing the curved honeycomb sandwich structure. The honeycomb structure of some materials is not easy due to the large in-plane rigidity. To meet the engineering requirements of curved surface attachment, the ordinary hexagonal honeycomb structure will produce a "saddle" deformation during the bending process, which is not conducive to the attachment to the curved surface. To solve the problems of load-bearing performance and surface accuracy, the present invention provides a honeycomb structure that is easy to bend and can adapt to different curved surfaces

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