Two-dimensional close-packed array composite pipe interlayer with lateral vent holes and machining method of two-dimensional close-packed array composite pipe interlayer

Abstract

The invention provides a two-dimensional close-packed array composite material pipe interlayer with lateral vent holes and a processing method of the interlayer. The array composite material pipe interlayer is made of composite material hexagonal primitive cells in a two-dimensional close-packed mode, gaps in hexagonal hole grids and gaps between the hole grids exist, meanwhile, at least three vent holes are formed in each primitive cell edge, namely each primitive cell is at least communicated with gaps among the surrounding three primitive cells; in each row of primitive cells, each gap between the primitive cell is at least communicated with one adjacent primitive cell; and the vent holes of each the primitive cell can be located in the side face or the end face of the primitive cell. The interlayer of the invention has the advantages of low density, low cost, less workload and high specific stiffness; and the vent holes just occupy a small area.

Description

technical field [0001] The invention belongs to the field of sandwich structure composite material manufacturing, in particular to a two-dimensional close-packed array composite pipe sandwich with lateral ventilation holes and a processing method thereof. Background technique [0002] Two-dimensional close-packed honeycomb interlayer is a structure with weak stiffness and difficult to process. Because of its low density, excellent impact resistance, vibration reduction, high specific strength and specific stiffness, as an excellent high-strength and ultra-light structure, it is widely used in the manufacture of industrial products such as aviation, aerospace, satellites, and automobiles . [0003] Two-dimensional close-packed array composite pipe sandwich is a kind of two-dimensional close-packed honeycomb sandwich, and its primitive cells have various shapes, such as circular and regular hexagonal. Because some two-dimensional close-packed array composite tubes are not tw...

AI Technical Summary

Problems solved by technology

However, this method is only suitable for dense honeycomb interlayers. If it is used for two-dimensional close-packed array composite pipe interlayers with gaps, it cannot ensure that the air in the gaps between the original cells is exhausted, and the air holes occupy a large space.

Images