Co-curing forming technological method of variable-curvature composite stiffened wall plate

Abstract

The invention belongs to the technical field of composite manufacturing and relates to a co-curing forming technological method of a variable-curvature composite stiffened wall plate. The co-curing forming technological method of the variable-curvature composite stiffened wall plate comprises the following steps of manufacturing a flexible long purlin core mold, conducting laying and pasting on a composite wall plate skin and a long purlin, assembling a long purlin green body and the skin and conducting packaging and curing formation. According to the co-curing forming technological method of the variable-curvature composite stiffened wall plate, the flexible long purlin core mold is used as the forming core mold, the flexibility of rubber and the rigidity, low density and other features of a fiber composite are combined, the composite flexible long purlin core mold is used for replacing a metal core mold and formed into a continuous structure, the rigidity of the core mold is controlled by adjusting the ratio of rubber in the flexible long purlin core mold, the long purlin green body with the composite part is laid and pasted to a laying and pasting mold, then the long purlin green body is transferred to a flexible long purlin mold, the long purlin is located to a skin blank through a long purlin locating clamping plate, the co-curing technological method is adopted to manufacture the stiffened wall plate of a variable-curvature structure, and during operation, the stiffened wall plate of the variable-curvature structure is easy to attach to a technology piece and is not influenced by curvature and shape.

Description

technical field

[0001] The invention belongs to the technical field of composite material manufacturing, and relates to a co-cured variable curvature composite material reinforced wall plate forming process method. Background technique

[0002] Composite materials are more widely used in various complex reinforced wall panel structures. As a structure with high difficulty in forming, variable curvature reinforced wall panels have the characteristics of large curvature changes, complex mold manufacturing and process molding. The traditional molding process of reinforced wall panels is glued and cured, so that the skin or stringer is first cured, and then glued and cured again with the other uncured part. This curing method is likely to cause local concentration of the overall internal stress of the part, resulting in Deformation and other issues, and multiple curing will inevitably lead to an increase in energy costs. In addition, the mandrel of the truss is generally made o...

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