Three dimensional finite element simulation of curing process and deformation prediction of closed beam with large aspect ratio

doi:10.19936/j.cnki.2096-8000.20230128.007

Abstract

Abstract: The curing process of closed beams with large aspect ratio is often difficult to predict due to its variable cross-section characteristics. In this study, a finite element model was established by constructing governing equations of thermal curing, flow-compaction, and stress-deformation coupling and the curing process of a one-piece composite beam with a large aspect ratio closed cross-section was calculated by this model. Design and manufacture of main beam was optimized based on the simulation results. The accuracy of the model was verified by comparing the scaled parts samples with the simulation results. The average error and maximum error between the simulation results of the full-size main beam profile and the actual deformation are 8% and 17%, respectively. This model can provide a basis for the pre-deformation design of the component mold to realize the precise forming of one-piece closed composite beams with large length-to-diameter ratio based on springback deformation compensation technology.

Key words: composite material, closed beam, large aspect ratio, deformation prediction

CLC Number:

TB332

WAN Jun, ZHANG Jie, SHEN Yanbin, SHA Huiping, LEI Zuxiang. Three dimensional finite element simulation of curing process and deformation prediction of closed beam with large aspect ratio[J]. COMPOSITES SCIENCE AND ENGINEERING, 2023, 0(1): 63-69.

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