Capping weaving method and weaving method of revolving shell fabric

Abstract

The invention provides a capping weaving method and a weaving method of revolving shell fabric. The capping weaving method includes following steps: S1, arranging a positioning device at the top of a mandrel; S2, taking the positioning device as a center to weave a cylindrical structure; S3, continuing to weave a transition area around the cylindrical structure, enabling diameter of the transition area to be diameter needed by a capping structure, and gradually reducing thickness of the transition area to thickness a revolving shell thin wall to complete weaving of a capping area of the revolving shell fabric. The positioning position is used as an assistant die to weave the cylindrical structure in the fabric capping area, and diameter of the cylindrical structure is increased while the thickness of the capping area is gradually reduced till being identical with that of a thin wall area to complete capping weaving of the fabric, so that capping weaving process difficulty of the revolving shell fabric is lowered greatly, and continuity of fiber structure of the whole fabric and uniformity of warp-weft density are ensured.

Description

technical field [0001] The invention belongs to the technical field of three-dimensional fabric forming, and in particular relates to a weaving method for capping a rotary shell fabric and a weaving method for a rotary shell fabric. Background technique [0002] Short fibers, continuous fibers, two-dimensional fabrics and three-dimensional fabrics made of high-performance fibers can be used as reinforcements in composite materials to strengthen various materials and be used to prepare advanced composite materials. Among them, advanced composite materials reinforced with three-dimensional fabrics have excellent mechanical properties such as light weight, high strength, high modulus, impact resistance and fatigue, and also have excellent functional properties such as wave transmission, wave absorption, and high temperature resistance, and are widely used. It is used in aerospace and other fields, and the continuity, uniformity and consistency of fibers in all directions of thr...

AI Technical Summary

Problems solved by technology

In the fields of aerospace and other fields, it is often necessary to use the three-dimensional fabric with the capping structure of the revolving shell as a reinforcement in the composite material. However, the three-dimensional fabric capping the revolving shell is a special-shaped fabric with a special shape and is not easy to weave at one time. Existing In technology, the capping area and the lower thin-wall area are often woven separately, and then the two are connected into a whole. However, the fabric woven by this method is layered, the integrity is poor, the continuity of the fiber body in the fabric is poor, and the fiber consistency is not good. it is good

However, with the overall weaving method, the weaving process in the capping area of ​​the rotary shell is difficult, and it is prone to quality defects such as uneven warp and weft density of the reinforcement, deviation of the shape and surface size, and inconsistent density.

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