Continuous equal-thickness paving method for curved surface forming, formed part and application

Abstract

The invention discloses a continuous equal-thickness paving method for curved surface forming, a formed part and application, and relates to the technical field of composite material machining and forming. The continuous equal-thickness paving method for curved surface forming comprises the following steps of obtaining morphology information of a curved surface core mold; uniformly constructing paving angle reference lines on the curved surface core mold according to the morphology information; calculating the length of the paving angle reference lines; and setting an intersection angle between a prepreg fiber bundle and the paving angle reference lines as a fiber bundle entrance angle, and changing the fiber bundle entrance angle based on the length of the paving angle reference lines, sothat the length of the part, covering the two adjacent paving angle reference lines, of the prepreg fiber bundle is inversely proportional to the cosine of the fiber bundle entrance angle. Compared with the prior art, the method has the advantages that continuous fibers can better adapt to curved surface changes, continuity of the fibers is achieved on a complex curved surface, the tensile strength of the fibers can be better exerted, the performance of a workpiece is improved, and the method is particularly suitable for manufacturing composite material parts with complex shapes in the fieldsof aviation, automobiles and the like.

Description

technical field [0001] The invention relates to the technical field of composite material processing and molding, in particular to a continuous equal-thickness lamination method for curved surface molding, moldings and applications. Background technique [0002] Fiber composite materials are composed of two or more materials with different properties, which are composed of materials with new properties macroscopically through physical or chemical methods. Compared with traditional materials, fiber composite materials have the following advantages: (1) higher specific strength and specific stiffness; (2) mechanical properties can be designed, that is, composite materials can be made The component or composite material structure meets the requirements of use; (3) good fatigue resistance; (4) good vibration damping performance; (5) usually able to withstand high temperature; (6) good safety. Fiber composite materials have been widely used in aerospace, automobile, wind power, ...

AI Technical Summary

Problems solved by technology

In the prior art, when fiber composite materials are used to form parts with complex shapes, due to the geometric limitations of composite materials, the fibers are likely to be unevenly distributed on the curved surface, resulting in uneven thickness of the part; The transverse shearing of the fibers in the ply destroys the continuity of the ply, making it difficult to achieve full coverage of continuous fibers, thereby reducing the performance of the product

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