Manufacture and Analysis of Large Size I-shaped Composite Enclosed Beam

Abstract

This paper analyzes the structural characteristics of the large-size I-shaped composite material closed beam, and explores the molding process plan, molding die design, curing stress-deformation prediction analysis, internal quality control, and product dimensional accuracy control. The results show that the use of the rigid mold positioning of the shape and the combination of soft mold and hard mold on the outer surface of the wing plate can improve the internal molding quality of the part. Thermal-chemical simulation calculation and curing stress-deformation prediction analysis can accurately predict product curing. For the deformed state in the process, a special process layer is designed for specific parts of the product, which solves the problem of deformation of the closed part after curing. The developed and formed multi-piece products have good internal molding quality, the shape and position and dimension accuracy of the products are controlled within the allowable range, and the mechanical properties of the furnace test pieces meet the design requirements.