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| Numerical Simulation and Verification of Curing Deformation for Stringer Shaped Composite Parts |
| ZOU Yao, CAI Yujin |
| ( AVIC Chengdu Aircraft Industrial (Group) Co., Ltd., Chengdu 610092, China ) |
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Abstract Based on the micromechanical model and resin shrinkage theory, a numerical simulation model of composite curing deformation was established. This model is used to simulate the U-shaped and V-shaped typical parts and the variable curvature stringer of the canard. During the curing process, the maximum deformation simulation results of the U-shaped and V-shaped typical parts were 11.413mm and 1.908mm, and the maximum deformation results measured by the test were 9.148mm and 1.802mm, respectively. Tracking and monitoring the stringer of the canard, and based on the four locating holes of the parts, the accuracy of the curing deformation value between numerical simulation and actual production is 95.6%, which fully verified the accuracy of the numerical simulation model. Using the deformation result, the stringer tooling compensation surface is established, and the error between the simulation profile and the design profile is controlled within 4%, which meets the requirements of engineering application.
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2020, 
