Influence of silicone rubber core mold hole occupancy ratio on dimensional shape force transfer effect and wall panel molding quality for co-curing of hat-shaped reinforced wall panels

doi:10.19936/j.cnki.2096-8000.20250228.009

Abstract

Abstract: To meet the hat-shaped reinforced wall panel co-molding process of curing pressure uniform transmission, to achieve good thickness uniformity and cavity height of the parts, the hat-shaped reinforced wall plate molding process auxiliary core mold to improve, put forward a set of trapezoidal prefabricated holes in the silicone rubber thin-walled core mold-vacuum bag combination of new flexible core mold. Using the finite element simulation method, the effects of silicone rubber thin-walled core molds with different hole occupancy ratios on the uniformity of pressure transfer during the co-curing molding process of hat-shaped reinforced wall panels were investigated, and the molding accuracy of hat-shaped reinforced wall panels after curing was analyzed. The results show that: when the silicone rubber thin-wall core mold prefabricated holes in the proportion of holes between 0.68~0.84, the silicone rubber thin-wall core mold expansion is moderate and uniform, can realize the uniformity and stability of the pressure transfer, and at the same time to ensure that the hat-shaped reinforced wall plate shape accuracy. Finally, the correctness of the finite element simulation of the thermal expansion of the silicone rubber core mold was verified by experimental methods, which created a process window for achieving the uniformity of the thickness of the silicone rubber core mold-assisted hat-shaped reinforced wall plate molding.

Key words: CFRP hat-shaped reinforced wall panel, co-curing, flexible modular core, preformed hole, maintaining shape transfer pressure

CLC Number:

TB332

ZHOU Jie, ZHAO Cong, ZHOU Laishui. Influence of silicone rubber core mold hole occupancy ratio on dimensional shape force transfer effect and wall panel molding quality for co-curing of hat-shaped reinforced wall panels[J]. COMPOSITES SCIENCE AND ENGINEERING, 2025, 0(2): 62-69.

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