Optimization of Temperature Field of Autoclave Frame Mold Based on Fluid Dynamics

doi:10.3969/j.issn.1000-1093.2022.01.026

Abstract

Abstract: Autoclave curing technology has become an important molding technology in the production process of composite materials, and has been widely used in the aerospace. The uneven temperature distribution in the composite material curing process used by this technology leads to the uneven internal structure of the material. For the problem above, a method for optimizing the temperature field of autoclave forming frame mold is proposed based on the influence of fluid flow rate on convection heat transfer. The proposed method is to reduce the circulation area of the working fluid, increase its flow rate, enhance convective heat transfer, and use the change of fluid flow rate to compensate for the temperature loss of the fluid itself due to heat transfer, so as to improve the inhomogeneity of the mold surface temperature distribution and solve the problem of large curing gradient of composite material. The COMSOL multiphysics simulation software is used to calculate the fluid-solid coupling of the “upward convex”, “straight” and “downward concave” variable cross-section molds. The temperature distribution of mold surface is analyzed. The results show that the profile of the “straight” frame-type mold has the best temperature distribution inhomogeneity, and it also has the characteristics of low conversion cost, simple structure, and easy implementation.

Key words: autoclave, convectionheattransfer, temperaturefield, structuraloptimization

CLC Number:

TF305

GUO Jingyu, YUE Guang, L Jiamei, REN Lin, PAN Yutian. Optimization of Temperature Field of Autoclave Frame Mold Based on Fluid Dynamics[J]. Acta Armamentarii, 2022, 43(1): 233-240.

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兵工学报ACTA ARMAMENTARII
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