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Filling method for composite rib triangular structure

A composite material and filling method technology, applied in the field of composite material molding, can solve the problems of low efficiency, high cost, and not a triangular area structure filling method.

Inactive Publication Date: 2020-01-14
AVIC BASIC TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The unidirectional prepreg tow accumulative filling method is relatively cumbersome and inefficient, and the weaving filling method is expensive due to the introduction of additional weaving technology, which is not an ideal filling method for the triangular structure

Method used

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  • Filling method for composite rib triangular structure

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Embodiment Construction

[0017] The technical scheme of the present invention will be described in further detail below in conjunction with accompanying drawing and embodiment:

[0018] The method for filling the triangular area structure of the composite rib blank body is to form an integral prepreg bundle 1 by folding or / and curling the unidirectional prepreg, preferably, the prepreg bundle 1 is Cylindrical, its cross-section along the axial direction is circular or elliptical, the fiber direction in the prepreg bundle 1 is consistent with the axial direction of the prepreg bundle 1, and the prepreg bundle 1 is The sum of the areas of the prepreg cross-sections is greater than the theoretical area of ​​the cross-section of the composite rib blank triangular region structure 2 along the length direction, preferably, the prepreg cross-section of the prepreg bundle 1 along the axial direction The ratio of the sum of the areas of the composite material rib blank triangular area structure 2 along the axi...

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Abstract

The invention provides a filling method for a composite rib triangular structure. According to the method, through design of integral prepreg clusters and combination with intermittent extrusion or / and beating, filling materials can be subjected to the conversion process of a whole structure, a bulk structure and a whole structure when the filling materials are filled into the triangular structure. The filling method has the advantages of a unidirectional prepreg tow cumulative filling method and a fabric body filling method.

Description

technical field [0001] The invention relates to a method for filling a triangular region structure of composite material ribs, which belongs to the technical field of composite material forming. Background technique [0002] The filling quality of the structure of the triangular area of ​​the ribs such as T-shaped ribs, J-shaped ribs, and hat-shaped ribs of composite materials, including the method of directly filling the triangular area of ​​the composite rib body or the metal mold of the structural form of the rib triangular area first The filling method of filling inside and then taking out the filler and putting it back into the triangular structure of the composite rib body depends on the specific filling method used in the implementation of the above filling method. [0003] At present, the specific filling methods for the triangular structure of the rib mainly include the cumulative filling method of unidirectional prepreg tow and the filling method of braided body. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/68
CPCB29C70/68
Inventor 刘立朋崔海超翟全胜
Owner AVIC BASIC TECH RES INST