A kind of solidification molding method of L-shaped plate composite material parts

Abstract

The invention discloses a solidification molding method of an L-shaped plate type composite material workpiece. The solidification molding method of the L-shaped plate type composite material workpiece includes the steps that firstly, a sensitivity analysis method is adopted to acquire the total sensitivity of a composite material in each layer; secondly, a finite element analysis program is adopted to acquire the initial layer laying angle of the composite material in each layer; thirdly, a multi-stage continuous design method is adopted to design the layer laying angle of the layer of composite material with the maximum total sensitivity value, and the layer laying angle of the layer of composite material is determined; fourthly, the layer laying angle obtained in the third step serves as a fixed value, and designing of layer laying angles of composite materials of the remaining layers continues to be performed; and fifthly, according to the obtained layer laying angles, layer layingof each layer of composite material is performed, then solidification molding is performed, and the L-shaped plate type composite material workpiece is obtained. The method is used for reducing rebounding deformation of the composite material workpiece in the solidification molding process, the size precision of the molded workpiece is improved, and congratulations are made in the aspects of improvement of structural performance and reduction of energy consumption.

Description

technical field [0001] The invention relates to the technical field of composite material molding, in particular to a solidification molding method for L-shaped plate-type composite material parts. Background technique [0002] The curing springback deformation of resin matrix composites has a great influence on the molding quality of components. As the size of components increases, the maximum displacement deviation caused by the same springback angle will also increase. The springback deformation of the component will not only affect the dimensional accuracy, but also cause assembly stress, which will affect the service life and quality of the component. Therefore, the springback deformation in the composite material solidification molding method is the research focus that needs to be solved. At present, there are two main methods to solve the curing springback deformation. One is to improve the manufacturing process, which includes the design of temperature process curve ...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the design problem of curing deformation, a large number of design methods currently focus on processes such as temperature and pressure, ignoring the fact that the layup angle of composite components also has a significant impact on springback deformation

And some designs for ply angles are only for typical ply angles, which are not universal

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