Inflatable unfolding composite material structure capable of being stiffened

Abstract

The invention provides an inflatable unfolding composite material structure capable of being stiffened. The inflatable unfolding composite material structure is composed of an inner container, a composite material, a heating piece and an end cover. The inflatable unfolding composite material structure is folded in a specific folding mode, the cross section of the inflatable unfolding composite material structure is divided into three parts, the outermost layer is the heating piece, the outer layer is the composite material, the inner layer is the inner container, the inner container is made ofa high-molecular polymer material, and the composite material is composed of a base material and a reinforcing material. According to the inflatable unfolding composite material structure, the designable heating piece is attached to a crease area, in the folding and unfolding process, the heating piece is heated, and an unlocking state is provided, after unfolding is completed, the heating pieceis cooled, a locking state is provided, and the influence of creases on folds and stress concentration after unfolding is eliminated. The inflatable unfolding composite material structure has the advantages of being excellent in performance, simple in structure, high in designability, high in rigidity, integrated in rigidity and flexibility, good in structural stability, high in unfolding shape precision and high in reliability, and therefore the inflatable unfolding composite material structure has very good engineering application value.

Description

technical field [0001] The invention provides an inflatable and expandable composite material structure which can be stiffened, and belongs to the field of composite material structure design. Background technique [0002] With the development of aerospace technology and engineering practice, the contradiction between spacecraft volume requirements and vehicle volume has always been an unresolved problem. The need to solve this problem directly promotes the research and development of inflatable deployment structures. The inflatable unfolded structure refers to a structure in which the original configuration is folded and placed in a loading device according to a specific folding method, and when needed, the inflation device is used to inflate and expand to reach the original configuration. Inflatable unfolded structures have been widely used in aircraft in recent years due to their small volume, light weight and high work efficiency after folding, especially in large space ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a rigid inflatable unfolded composite material structure to solve the problems of low rigidity, stress concentration at creases, low unfolded shape accuracy, and poor mechanical properties after unfolded in traditional inflated unfolded structures.

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