Analysis of curing deformation of Z-shaped fiber-reinforced composite laminates

doi:10.19936/j.cnki.2096-8000.20240328.012

Abstract

Abstract: The thermochemical and thermal phenomena generated during the curing process of composite laminates are the main reasons for the residual stress and deformation of parts, and Z-shaped composite laminates have great potential in the overall structure of aero-engines, so it is necessary to optimize the curing molding of the Z-shaped laminate. This paper establishes a theoretical model related to curing degree, uses the secondary development function of ABAQUS software to carry out finite element simulation analysis, conducts orthogonal test design, and analyzes the influence of design parameters such as transfer radius, number of layers and stacking sequence on the curing deformation of Z-shaped laminates. The analysis results show that the resin modulus, curing degree and molding process temperature have great correlations, and only the number of layers can significantly affect the deformation, while the transition radius and stacking sequence have little influence. And when the transfer radius is 12 mm, the number of plies is 4, and the stacking sequence is [30], the deformation of the Z-shaped laminate can be locally optimal.

Key words: Z-shaped laminate, CFRP, FEM, residual stress, deformation

CLC Number:

TB332

WU Qiang, ZHAO Kai, LIU Pengfei, ZHANG Taotao, ZHU Deyong. Analysis of curing deformation of Z-shaped fiber-reinforced composite laminates[J]. COMPOSITES SCIENCE AND ENGINEERING, 2024, 0(3): 84-90.

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